Valve Spring Shims

These are highly recommended for use with alloy cylinder heads to protect the softer alloy from the harsh springs!. Sort By Set Descending Direction. 600 lift and still have. Beehive Valve Spring Conversion Kit for GM Fast-Burn Cylinder Heads. GM Performance Parts for the lowest prices on the web. Used to achieve precise spacing or fill space between mismatched components, shims are a critical component to a variety of assembly operations and applications. Speaking of shim sizes, the diameter of a DRZ valve shim is 9. 3L valvesprings will increase the valve seat pressure to 99lbs of seat pressure without the optional shims (at the factory installed height). Valve Spring Tools Mancini Racing 5. Start studying Cylinder Heads/ Auto. Oversize valves are intended for racing vehicles with planned use on closed courses. Proven LS Horsepower. Top Spring I. There are mainly two systems used to control the valve clearances - Ones with the shim adjuster under the follower bucket, and the other where the shim sits on top of the bucket, eg, Toyota 4AGE. The Mustang 5. They are below the Clamping Shim (the smallest diameter shim in the stack), Their thickness is adjusted to fine tune the Float. I had pulled the aluminum valve covers off the 429 CJ in my Torino to clean and shine them up when I noticed a plate under the springs. Great but Cheap Screw Shim, Cheap Home Improvement, Screws, Nuts, Toys & Hobbies as well as Cheap and more! Online Get Best Screw Shim You Need from Aliexpress. No shims or cutting of valve guides required – Uses stock seals and spring seat. AccuTrex Products is an ISO 9001 and AS9100 registered, veteran-owned small business. Doing so will increase your seat pressure by some number of lbs (spring rate * shim height), and will also DECREASE your valve lift, as your new installed spring height is lower, bringing the spring closer to its solid height. 060, I even use spring seat locators to aid in the process. valve spring shims. We apologize this item is not available for shipping at this time. Disassemble and clean cylinder heads. 5 through 2003 Ford 7. There's less strain on the valvetrain so the valve springs can control motion and harmonics better. Paul is correct as Ford did not use valve spring shims from the factory. If the item is not in stock at your local store, then your store associates can order the item for you. We also proudly distribute Practi-Shim™ color-coded plastic shim stock. 3L valvesprings will increase the valve seat pressure to 99lbs of seat pressure without the optional shims (at the factory installed height). 90 or higher. Equip cars, trucks & SUVs with Valve Spring Shim from AutoZone. Setting the correct installed valve spring height and pressure is critical , the proper operation of the valvetrain. Return Policy. The valve spring is also rated for loads (in pounds) at two heights — the installed height (closed) and the open height (at max valve lift). The Truth About Valve Springs: Article from Comp Cams Valve springs are one of the most critical and most overlooked components in your engine. Additional Information. 015 Valve spring shim. Pelican only sells the shim and states that it is good for quite high revs. spring rate calculator. Appears on page 895 of 2019 Offroad. Spring Set Application: 4. Most of the springs are very close to that, but I have some that are 1. From F-body to Corvette, Sierra to Silverado, G8 to GTO, we carry everything for making power with your LS or Gen V Ride!. Valve Spring Preparation and Installation. Proper selection of the valve spring begins with identifying the application and selecting all of the valve train components to achieve the engine builders' goals. Valve lash is intended to provide the greatest amount of valve opening on the high point of the camshaft lobe and assure that the valve is tightly closed on the low segment of the camshaft lobe. Valve Stem Seals; Valves; Valve Guides; Valve Seats; Valve Lifters; Valve Locks; Spring Shims; Engine Block Parts. Now measure the heights of the valves without the guides or shims. Use this shim with conventional head gaskets only. 008 thickness. 015" Part Number: 4737-16. you absolutely need to run locators with AL heads. High performance racing components, valves, pistons, springs, valve train engine components manufacturer and supplier. However, previous owner thought them to be bolt on ready. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. These are highly recommended for use with alloy cylinder heads to protect the softer alloy from the harsh springs!. The valve springs, on the other hand, are the main players within the valve train. Next to the specific heat-treatment the shims are precision machined to match exact size. We offer the best customer service in the industry!. Includes 24 springs and shims for use with JWT race cams or JWT street cams with rev. Equip cars, trucks & SUVs with Valve Spring Shim from AutoZone. 5 through 2003 Ford 7. Thank you for shopping at NAPA!". 1L HEMI's, you will need to upgrade your stock valve springs. Hardened Valve Spring Shims Specifications- GM crate legal, thickest allowed Thickness:. Oversize valves are intended for racing vehicles with planned use on closed courses. More Info. HOT CAMS VALVE SPRING KIT/ TI RETAINERS YAMAHA RHINO / RAPTOR / GRIZZLY 660-Includes valve springs, base washers, and retainers. Fig 4 Zeroing out the spring tester to assembled. Home › Valve Springs & Hardware › Valve Spring. What's measured on the heads is the distance between the machined pad the spring rides on and the underside of the valve retainer. K&L shims exceed the maximum of the Apparent Rockwell Hardness “C” scale. nka and akra legal. The offset jaws compress the spring, allowing you to pull out the keepers. 040 inch, whereas the new shims are about. Valve springs shims are often required to properly set the spring for seat (fully closed) pressure. Freeze Plugs; Rear Main Seals. 050 Thick TRE-03-2150 Trend's hardened steel shims are used to adjust the installed heights and pressures of valve springs. Learn About Crest-to-Crest Wave Springs with Shim Ends Water Valve A Smalley Crest-to-Crest Wave Spring, also known as a Flat Wire Compression Spring, prevents the valve handle from rotating by maintaining a constant load and engaging the threads on the main shaft. 91-554 Valve spring shims. 060″), the shims are engineered from high-quality material and heat-treated to withstand radical cam lobes in LS engines with 1. The Mustang 5. However, you can be the first person to add a review for. When setting the spring height, shims must be used to equalize the installed height of the valve spring. Part # Description Year Alloy Cylinder / Valve Max Lift; 200-H: Honda 70 SL/CT/ATC: Al: Can Am DS 450 Beehive Spring 9. 030" Thick Valve Spring Shims (100) $19. WELCOME TO PERFORMANCE SPRING. From F-body to Corvette, Sierra to Silverado, G8 to GTO, we carry everything for making power with your LS or Gen V Ride!. assemblies, maintaining original valve spring installed height, valve overall length, valve tip length (0. Brian Crower valve springs, for all SR's, set at 90ft/lbs, have more spacing than other valves so enables you to run larger cams - Was $105, New price of $63. 015 Thickness. S Toll Free: 877. For California Residents Only - Prop 65 Warning: Some products may contain chemicals such as DEHP, which can cause cancer, birth defects or other reproductive harm. Valve Collets. 480 in OD - Steel - Set of 16; Write Your Own Review on Hippo deals. In addition to Engine, browse our full selection of Parts & Accessories. TrickFlow- Drop-in Coyote Valve Springs Kit. Remove the valve spring collet (3) with a valve lifter. Each set of Crower valve springs comes with an installation card that specifies the correct installed height for your springs. Comp Cams spring shims are made of the highest quality shim stock and heat treated to stand up to the immense pounding of the radical lobes of today's cams. 1-16 of 235 results for "valve spring shims" Skip to main search results Amazon Prime. The steps shown there are identical to this valve adjustment. The valve spring shims are usually difficult to remove because the shims are located in a well in the engine head and occasionally in the engine block. I have an application that requires hardened valve spring shims in a size that is not readily available. Comp Cams 4737-16 Valve Spring Shims. The valve gear fitted to your engine will be either pushrod (OHV) or overhead camshaft (OHC) (See The engine - how the valves open and close). The next step is to figure out the adjustment for the opener shim. now this is a street engine but every once in a while you have to blow the cob webs out of it, and wind her up. Valve Springs, Valve Spring, Valve Springs, Valve Springs, Valve Springs, Valve Springs, Valve Springs, Valve Springs, Valve Spring Retainer, Valve Spring Retainer. " Longer valves and deeper pockets both have. Product Description Valve spring shim. With these tools, you should be able to seperate the shim from the "cup". Some are tension tested at one lenght. Ishock takes suspension and it's relevant parts very seriously so you can rest assured that what we carry in our online store, are the best products on the market. How to use + or -. Thanks iwantmore, but honestly new springs aren't really an option at this time. AccuTrex HQ manufactures shims, gaskets, custom OD/ID washers, AccuPeel® laminated shim stock and sheet metal fabrications. You can use either to correctly adjust the clearances. PREPARE PARTS TRAY FOR STORING VALVE ROCKER ARM SUB-ASSEMBLIES AND VALVE ADJUSTING SHIMS IN ORDER. Every single product we sell undergoes extensive testing and analysis to ensure the end result is a superior product that can withstand demanding race conditions. You can order them at O'reillys. 2-Year Parts and Labor Warranty, fast shipping, Delivery in 2-Days or Less to most areas. Boker's provides an extensive offering of shims, in a variety of sizes and materials to meet diverse industry needs. Please contact the sales office for more details. All Crower Clutch discs are made with Sintered Iron and do not contain asbestos. On some non shim adjusting arrangements, when the retainer is installed on the valve, it may sit below the top of the valve. First idea was to put the shims under the cup. Thanks iwantmore, but honestly new springs aren't really an option at this time. Measure the distance between the outside edge of the valve spring retainer and the spring seat. The “intake valve float” condition is problematic because the stock Chevy ‘602 valve springs suck, especially if you are trying to run the motor over 5,800 rpm. 48mm Engine Accessories Valve Shim Kits For HONDA CB600F CB900F CBR1000RR CBR1100XX CBR600 CBR600RR CBR900RR Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return. Kameari Valve Spring Shims. International is the premier worldwide supplier of cylinder head components to the aftermarket in terms of quality, service and product offering. Add to cart. 015 Thickness. This Mustang valve spring upgrade kit features hardened 4140 chromoly retainers, valve locks, spring shims, a spring height gauge, valve seals, and instructions. All heads are probably not exactly the same in the height between seat area for the valve vs seat for the spring. The KPM high performance dual valve springs were specially designed for MPS by Kibblewhite Performance Machining. Use hardened shims Use a spring cup Use -0. How To Measure and install valve springs. Valve Float is a condition where the valves are opening and closing at such a high rate that the valve springs fail to fully close the valves for the cylinder, a. Through our testing which has involved the breaking of many other valve spring combination's that are currently on the market, we have come to find that this special PSI/Manley combination is the best out there. Notice the cutouts in the underside of the rocker arms. Specific heat-treatment will ensure hardness of the shims to offer maximum durability and less wear. GM Performance Parts for the lowest prices on the web. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Hemi valve spring shim. 050" to coil bind. Valve springs are one of the most critical and most overlooked components in your engine. VALVE SPRING SHIM KITS Parts Unlimited Partsnetweb Careers Parts Canada About. Find Ferrea Racing Engine Valves at Ferrea. The 2002 WRX uses shim-over-bucket. Its best to use the Subaru/SPX special tool if you need to replace shims. Works off the rear brake and restricts the flow in the left fork and prevents it from moving. Introducing our new Valve Spring Kits available for a wide range of applications. 130 from head to retainer with no shim at all springs say 2. They generally come in minimum quantity of 25 or 50. Rear Main Split (2 Piece) Full Round Rear Main; Timing Cover Seal; LS Gaskets; Freeze Plug Kits; Push Rods; Misc. valve spring shims. From F-body to Corvette, Sierra to Silverado, G8 to GTO, we carry everything for making power with your LS or Gen V Ride!. BMW camshafts, VANOS, & valvetrain parts are your BMW engine's vital internals, responsible for moving air and fuel together to create the very combustion that creates power. Valve Spring Shims. On most shim engines that entails 10-20 bolts, but not the shim, against the valve spring pressure. Start studying Cylinder Heads/ Auto. Oversize valves are intended for racing vehicles with planned use on closed courses. 0L Trick Flow valve spring kit includes 16 each of 1. There's less strain on the valvetrain so the valve springs can control motion and harmonics better. These valve spring shims are designed to fit Flathead Ford applications. This is a Special Order item. Terms and Conditions. Our shims “average” 47. Click more info to choose yours. The included shims replace the stock base shims to obtain the correct installed he. 030" Thick Valve Spring Shims (100) $19. Freeze Plugs; Rear Main Seals. The one pictured is a Proform part# 66902. Then just release the overhead valve compressor and take the spring out. Type "C" For Balancing. 305 Racesaver Valve Spring Shim Kit, 48 pcs, 1-1/4 Inch O/D made by Speedway Motors, for as low as $24. Don't use the spring washers. If the pressure is inadequate then shim as necessary to achieve the desired pressure insuring that the "MIH" is not exceeded. Re: Where to find valve spring shims 6. Valve Spring Shim Products. LT4 VALVE SPRING SHIM. Free Shipping Best Price Guarantee No Customs, Duties, or Brokerage Fees. 050 by going to -. The Truth About Valve Springs. COMP Cams GM LS Valve Spring Shims 4717-16 |. 50/5 on all valves. Set of four. 050" to coil bind. 209 results for valve spring shims Save valve spring shims to get e-mail alerts and updates on your eBay Feed. Schnitz Racing has all the motorcycle performance parts you need to Stay in FRONT! Engine parts, swingarms, nitrous, turbo kits, chain, sprockets, air shifters, exhaust kits and much more. They are below the Clamping Shim (the smallest diameter shim in the stack), Their thickness is adjusted to fine tune the Float. Correct me if I'm wrong, but adding a shim would reduce spring height. 88, or with an aftermarket valve could be 1. Springs will not fit in the OEM spring cups. ) This article details the proper way to install valve springs on a head and shows some special tools in use. All KPMI® valve guides, standard valves, and spring kits are intended for use as OEM replacement parts, exceeding OEM specifications in terms of durability and expected cyclical life. These are highly recommended for use with alloy cylinder heads to protect the softer alloy from the harsh springs!. 820 installed height. It's a good idea to have your old valve springs checked by your machine shop to make sure that they have the correct spring tension. These shims are. 12 Item(s) Show. This "Seat", often called a shim, is a thin washer that is installed below the valve spring to ensure the valve spring itself does not make contact with the aluminum head. Type "C" For Balancing. Tweet Pin It. Springs have a spring rate which is specified in pounds per inch, so if the valve lift is higher, then the open load is higher even with the same spring. Claasic Austin Mini Valve Spring Shim ,. The Truth About Valve Springs: Article from Comp Cams Valve springs are one of the most critical and most overlooked components in your engine. I need to get. All camshafts come with a recommended valve spring height; it is usually on the spec card included with the cam. Dimensions. VALVE SPRING SHIM KITS. O-ring, Spool Valve (Special)* Mylar Shim Spool Cap Screw, Spool Cap Lockwasher, Spool Cap Spacer Block, Spool Cap Spring, Spool Valve Washer, Spool Valve Spring Retainer, Spool Valve Shoulder Screw, Spool Valve "S" Link, Handle Pin, Handle Push Nut, Handle Pin *Refer to overhaul procedure for application. AV&V™ Valve Spring Shims for Yamaha. If you don't have room to set the lash, perhaps the seats were set too low into the head. Return Policy. I just finished doing this using those exact springs because I thought the explorer springs were fine. This Mustang valve spring upgrade kit features hardened 4140 chromoly retainers, valve locks, spring shims, a spring height gauge, valve seals, and instructions. However to use shims it assumes your valve heights and spring pocket depths are sufficient to shim the spring up to a lesser height to achieve the design value. Upon dis-assembly, found there to be no hardened spacers under the valve springs. 666 And No. Fast, Free Shipping on Orders Over $79 on HOTCAMS Valve Shim Kit & HOTCAMS and gear at MotoSport. nka and akra legal. 305 Racesaver Valve Spring Shim Kit, 48 pcs, 1-1/4 Inch O/D made by Speedway Motors, for as low as $24. The stock shims will have warn down to about. Oversize valves are intended for racing vehicles with planned use on closed courses. Gold Valve Compression and Rebound Fork Kits. valve spring seat shims set of four 0. 660 LS Dual valve spring and retainer kits are designed to provide maximum performance and reliability for your LS based build. Proven LS Horsepower. Upgraded valve spring keeps the valves closed in high horsepower applications. A valve shim is a disc of hardened metal of precisely calibrated height, used to adjust the clearance (US: lash) between the back side of the cam-lobe and the valve on which it operates, where the cam-lobe operates directly on the valve without an intermediate rocker arm. 130 these springs have 450lbs ?. Valve Spring Shims; Valve Spring Shims. Re: valve spring shim installation theory Sounds like a 400 jr, theu need allot of pressure. 7deg, 7mm Titanium Posi-Lock retainers (no valve rotation in valve locks) 6. 028 lash so do i worry about pressure because the way i figure it which may not be right is that i will need to shim to get coil bind correct but at 2. limit raised above 7000 rpm. The spring seat area on hemi heads is thin and cannot be sunk much without going through to water. All Crower Clutch discs are made with Sintered Iron and do not contain asbestos. The Racer's Company. To be installed between the head and lower spring seats. Disassemble and clean cylinder heads. I just finished doing this using those exact springs because I thought the explorer springs were fine. International is the premier worldwide supplier of cylinder head components to the aftermarket in terms of quality, service and product offering. What you end up doing is installing a shim or two to kind of pre-compress the spring whether it's. Not only that, but we have them all in-stock and ready to ship to you today. I'm refering to the shims within the lifters that are used to adjust valve clearance with the cams still in place. Without them, the valves would make contact with the tops of the pistons and cause damage. Qty: Add to Cart. The method of shimming valve springs dates all the way back to the turn of century when mechanics and tuners alike would try to retain the stock valve characteristics as much as possible. • Valve Springs Stock OD - Single HD • Chevy Type-1. The rebound valve assembly includes a shim stack of many thin spring steel washers, a check valve (spring and washer) and the valve body (piston). Valve Collets. 050" seems more logical. • Valve spring shim for all Chevrolet Performance 572 engines • Requires 16 per engine. The maching shop dude 'splained that the wear patterns between cam/lifters are unique to each and with modern spring pressures, eventually they chew each other up. Click more info to choose yours. For example, if during the tuning of your valve, you are faced with the red spring being too strong and the blue spring too weak, you can add the spacers/shims to the blue spring to increase the tension by small increments, thus achieving a setting between the red and blue springs. Valve Spring Shim Single - 1. TrickFlow- Drop-in Coyote Valve Springs Kit. The stock SBC valve springs were very light (like 80 lbs on the seat) and very short installed. 015 clone gx200. Install all spring cups and/or valve spring shims (basically, everything except the valve spring). Valve clearance shims, manufactured by computer-controlled technology. VALVE SPRING INSTALLED HEIGHT:Installed height is the dimension between the valve spring retainer and cylinder head valve spring pad (See Figure 1 Dimension “A”). PREPARE PARTS TRAY FOR STORING VALVE ROCKER ARM SUB-ASSEMBLIES AND VALVE ADJUSTING SHIMS IN ORDER. If you do not already have these parts check out our Valve Spring package deals for the best pricing. Valve Stem Seals; Valves; Valve Guides; Valve Seats; Valve Lifters; Valve Locks; Spring Shims; Engine Block Parts. The retainer is at the top of the valve spring and is an entirely different subject. They are made of a through hardened steel and will not break or gall like other shims. 540" valve height, produces 170 lbs seat pressure and will handle. Spring Chart. Dimensions 1. They are the first ones that go on the Sleeve Washer and are the furthest away from the Rebound Gold Valve. The included shims replace the stock base shims to obtain the correct installed he. Valve springs shims are often required to properly set the spring for seat (fully closed) pressure. Here you can find Honda, Suzuki, Kawasaki and Yamaha motorcycle Valve Spring Retainers. 0 out of 5 stars 2. Don't use the spring washers. If not, the valve clearances may be disturbed and result in engine malfunctions. valve springs and shim question When changing the valve springs on a blacktop can you use the existing shims or do you have to change them for new I’ll try my hand at most things but i think i’d find my engine building limits rather quickly trying to measure shims and gaps etc. 95 + Add to Cart. —Some racers refer to these as retainers which is an incorrect term. Installing Valve Spring Shims Without Removing Cylinder Heads:The first RPM limitation on a stock motor is valve float at ~4400 RPM (different on each motor). 250”) and retainer designs. These comp 910 valve springs are recommended if you are running stage 3 injectors performance injectors. K-Line Valve Guide-Liners; Measuring Tools; Neway Valve Seat Cutting; Piston & Connecting Rod Tools; Porting & Polishing; Sunnen; Torque Honing Plates; Valve Clearance Discs; Vacuum Testers; Valve Grinding; Valve Guide Tools; Valve Seat Grinding; Valve Seat Tools; Valve Spring Inserts - VSI; Valve Spring Testers; Valve Spring Tools; Valve Stem. Now measure the heights of the valves without the guides or shims. Proven LS Horsepower. Call Us for Custom Appications. Equalize installed height of valve spring; Engineered from the highest quality shim stock; Heat-treated to withstand radical camshaft lobes. Triples, once popular in very fast classes of drag racing, add a third. In order to run the higher lift cams on the non-variable cam 5. 008 thickness. I have always cut the seats deep enough for a shim since that experience. This kit includes our Titanium Retainers made of space age titanium material and Valve Spring Shims. The Truth About Valve Springs. Additional Information. 085, the shim may sit so low in the spring retainer that the follower will open the valve by pressing on the spring retainer (bad idea). Valve Stem Seals; Valves; Valve Guides; Valve Seats; Valve Lifters; Valve Locks; Spring Shims; Engine Block Parts. 060, I even use spring seat locators to aid in the process. valve spring synonyms, valve spring pronunciation, valve spring translation, English dictionary definition of valve spring. These Valve Spring Retainers help to improve the performance of your bike for both faster acceleration and better handling. All springs are subject to sudden failure, but most will give some kind of warning, slowly losing pressure over time. Available in. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. Hold the valve closed by pulling the retainer up tightly against the valve locks. VALVE SPRING SHIM KITS. The valve spring shims are usually difficult to remove because the shims are located in a well in the engine head and occasionally in the engine block. First idea was to put the shims under the cup. Thanks iwantmore, but honestly new springs aren't really an option at this time. 015" Thick JavaScript seems to be disabled in your browser. Made of heavy duty aluminum. After taking the Showa BFRC shock apart and reviewing the design first hand the … MXT 2017 New Products. Oversize valves are intended for racing vehicles with planned use on closed courses. 015 VALVE SPRING SHIM quantity. 50% deposit may be required. Comp Cams 4743-16 Valve Spring Shims. Getting kind of close, the shim range ends at 2. These Shims our used in our Stage 1 engine to bring the stock spring seat pressure. Honda Spring Kits. Valve Spring Shims / Spacers Valve Spring Tools Sportsman Stainless Steel Valves Videos, Books, and Software SSL. If during this tuning of your valve you are faced for example with the red spring being to strong and the blue spring to weak, you can add the spacers to the blue spring to increase the tension by small increments, thus achieving a setting between the red and blue springs. PREPARE PARTS TRAY FOR STORING VALVE ROCKER ARM SUB-ASSEMBLIES AND VALVE ADJUSTING SHIMS IN ORDER. Proprietary Wood Performance 7deg, 7mm single groove Posi-Lock valve keepers 5. Valve Stem Seals; Valves; Valve Guides; Valve Seats; Valve Lifters; Valve Locks; Spring Shims; Engine Block Parts. If the item is not in stock at your local store, then your store associates can order the item for you. Set of 16 single springs; Outside diameter: 1. seen over 5K several times. The one pictured is a Proform part# 66902. Click more info to choose yours. Valve spring shims can be used to precisely adjust the installed height of each spring until they are all equal. AV&V™ Valve Spring Shims for Yamaha. Typically HP springs have higher loads. Valve Springs, Valve Spring, Valve Springs, Valve Springs, Valve Springs, Valve Springs, Valve Springs, Valve Springs, Valve Spring Retainer, Valve Spring Retainer. All KPMI® valve guides, standard valves, and spring kits are intended for use as OEM replacement parts, exceeding OEM specifications in terms of durability and expected cyclical life. I can make u a set tomorrow at work how thick u want them. There are two types of OHC valve gear direct acting and indirect acting. Valve Spring Chart - Listed By Installed Height Part # # of Springs Shims Part # # of Springs Installed Ht. Unfollow valve spring shims to stop getting updates on your eBay feed. No shims or cutting of valve guides required – Uses stock seals and spring seat. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: