Valve shim calculator mm. net). 05mm steps. This will calculate shims up to 0. All rights reserved. The shims are in 0. For instance, if one of your current shims has 240 written on it, but you measure it to be 2. 000mm. 153 mm this last measurement is valve stem diameter. 005 and the one shim calculator has the specs at . Measure your clearance with feeler gauge (right ex. 05 increments. 93 mm - Ideal/Avg Clearance . Alfa Romeo valve shims come in sizes from 1. ) degradations and a caliper/micrometer with metric(mm. valve 0. It is best to measure your current shims with a micrometer and type in the measured value; this will increase accuracy. The Valve Shim Calculator streamlines engine maintenance by facilitating precise adjustments to valve clearances for optimal performance and reliability in vehicles. You enter the your existing gap, and the gap you want to end up with, it then determines the size shim you should use The shop manual that I have been using has valve clearance specs at . 05mm increments - that's 47 different thicknesses to get your valve clearance perfect. You enter the your existing gap, and the gap you want to end up with, it then determines the size shim you should use Reface the valve seat if carbon deposit result in a calculated dimension of over 3. 095" example). g. 98% of products ordered ship from stock and deliver same or next day. Recommended for car repair shops workers, car service owners and mechanics enthusiasts. 003" smaller shim for that valve so go to the shim box and find the 0. The valve clearance calculator determines how much adjustment is needed to bring valve clearances within the manufacturer’s specified range. I have measured a shim and the measurements are outer = 0. 75 mm We all know that numbers rarely work out perfectly like the above example. Calculate the ideal shim thickness in Sourcetable with ease. 2012 DL650: I'm working on the front cylinder. Easily calculate correct valve shim sizes for your engine using our Valve Shim Calculator. Honda CRF150R, CRF250R/X/RX/L, CRF300L require 7. Changing shims is easy, too, when the clearances go past Math was never my strongest subject in school, so I'm looking for some bigger brains to help check my work. 004 - . This prevents valve damage, maintains engine efficiency, and reduces noise. Example: exhaust valve measuring . Open up the Valve Shim Calculator (6th from top) for a tool that will do the math for you when calculating your shim size needs. This acts as a check when you perform the final readings. The calculator will instantly provide you with the exact shim size needed to achieve the desired valve clearance. If it isn't within the spec you remove the camshaft and take out the shim. 25 Custom DCR valve shims made from precision drill rod material hardened and custom ground to thickness you select. I'm doing my first valve adjustment and, given the importance of getting this right, I want to do what I can to ensure my accuracy. Plus it helps to see what shims can be moved around. 4mm. 13 mm + Existing Shim 2. By calculating the new shim thickness, it ensures that valves open and close properly during engine operation. All you have to do is type in your valve clearance and shim measurement and it will calculate the new shim required. Even cheap ones work fine. 1 Notes: 1. Enter the current shim size (found by removing and measuring the shim with a micrometer or caliper), the measured clearance, and the target clearance into the calculator. I used to set mine to the minimum because the valve clearance usually got greater with those engines. Measure the thicknesses of the valve shims and record their sizes in the table. Kawasaki 29mm valve shims are only available in increments of five hundredths of a millimeter. The program will calculate the shims needed to get as close as possible to the desired clearance. Both The valve shim of a car is a hardened metal disc responsible for the clearance adjustment between the camshaft-lobe and the corresponding valve it controls. 5 mm valve shim options, with the ability to refine your search for personalized choices. 50mm in 0. Fits KTM and Husqvarna 250/350/450 engines with shim diameter of 8. . FREE SHIM TOOL: Calculate ANY valve shims online - Car/Auto/Motorbike/Jet Ski/ etc This is for the DL-650: I wanted to share this EXCEL Spreadsheet for quick valve calcs during adjustment. 20mm to 3. Checking your valve clearances is so easy on the boxers - another reason to love these bikes. 3876 mm, it is best to type in 238. Enjoy. One of the reasons for unpleasant engine knocking is incorrect valve clearances. Valve Clearance Calculator This tool helps you determine the correct shim size needed to adjust your engine’s valve clearances. You measure the gap between the base circle of the cam and the shim atop the valve. You can change to your preference. 2. 05mm increments, which is perfect for Suzuki GSX-R750 (1993-2011) and Kawasaki ZX-7R (1991-2003) models. Motorcycle mechanics, this valve shim kit is absolutely essential for doing your own valve adjustments! The 47-piece set covers sizes from 1. The thickness in millimeters is stamped into the shim. Has any one used this valve calculator program that can explain it? A shim calculator is designed to calculate the exact thickness required for a shim to adjust the space between two components. 002 - . I am going with the shop manual specs. 01mm in 0. Custom TrickTracks Valve Shim Calculator, built using CALCONIC. In a pinch, it is possible to grind a shim down by rubbing with #600 sandpaper mounted on a piece of glass. ) Toyota Spec: Jason's 2JZ Valve Shim Calculator This calculator is intended for adjusting valve clearances in a 2JZ with a feeler gauge with standard(in. 175 mm and exhaust at . Calculate the size valve shims you need to obtain the desired clearances and order them. Use the inches to millimeter conversion tool on this page if your micrometer is not metric. Accurate valve clearances are crucial for optimal engine performance, efficiency, and longevity. This small application is intended to help you calculate and make a best repositioning of the valve shims (lifters, tappets) when adjusting clearances. Now covers Triples. This is for the DL-650: I wanted to share this EXCEL Spreadsheet for quick valve calcs during adjustment. Ensure precision and smooth performance. Only if the thickness stamp is worn off do you need the calipers. Dirt bike riders, this 47-piece valve shim kit is essential maintenance for your Honda CRF250R! Contains every size you need from 1. Reface the valve seat if carbon deposit result in a calculated dimension of over 3. By inputting your current shim size, measured clearance, and target clearance, the calculator gives you the required shim size to install. 092" shim (that's an example, I don't know what your shim measures). KLR650 '84-05 Valve Shim Calculator Input the measured valve clearance, the current shim size, and the desired clearance for each valve. Its been awhile since I have used it, but have it saved on my desktop. It is assuming your intake shim clearance at . The Valve Shim Calculator helps determine the correct shim thickness you need to achieve the specified valve clearance. Initially updated from old Excel version to web-browser version and posted the Twins version. Whenever a cam-lobe exists within a vehicle, it controls the KLR650 '84-05 Valve Shim Calculator Input the measured valve clearance, the current shim size, and the desired clearance for each valve. 48mm OD shims and Honda CRF450R/X/RX/L/RL require 9. 3mm to 3. Important: Ensure all measurements are in the same unit (e. 13 mm clearance (a bit tight) with an existing installed shim 2. Triumph Universal Valve Shim Calculator Since the new shim will not likely be the exact thickness value when you input the actual thickness of the new shim (in millimeters) the spreadsheet will then calculate the 'expected' or theroetical clearance with the new shim installed. Jun 12, 2024 · To determine the correct valve shim size required for your engine, input the current valve clearance, measured valve shim size, and the desired valve clearance. 025mm increments. Luthier tools, guitar parts, and supplies for instrument builders, repair shops, hobbyists, and players worldwide. 48mm OD shims A valve shim calculator is a tool—often online or integrated into a mobile app—that helps riders calculate the correct shim size to achieve the manufacturer’s specified valve clearance. Has any one used this valve calculator program that can explain it? Before I head out to perform a valve clearance adjustment, I thought I'd post a spreadsheet I put together for calculating new shim sizes required to achieve correct clearance gaps. Learn how to calculate shim thickness with precision. 250 mm and inner=0. , all in mm or all in inches). 8 (note that I rounded to the fourth digit, 7, up, because the digit after it is larger than 5). Explore the myriad of 29. Valve shims can be had from amazon by the each, in a couple of days, and you don't need to buy a box of sizes you won't ever need. Enter number of shims and min/max clearance required. 006. My original Triumph (3 cylinder) Valve Shim Calculator (Excel version only) was launched in January 2003 and still resides on the Triumph Torque website (formerly T595. ) Calculated New Clearance(mm. McMaster-Carr is the complete source for your plant with over 700,000 products. Moving the box from shelf to shelf for the next 10 years. Ok with this example you need a 0. 90mm diameter. 007) - then pull the shim and use your dial caliper to determine the shim thickness (0. May 24, 2025 · This tool helps you determine the correct shim size needed to adjust your engine’s valve clearances. = Ideal new shim size. :applause Earlier post:- Remove the bucket tappets and valve shims, putting them into a labeled organizing container so you’re absolutely certain which one goes where. NOTE: Make changes to the values in the yellow cells only!! 0. * One inch is 25. Same day shipping, free technical support, and quality you can trust — for life! Actual Shim Installed(mm. 80 mm = Existing Total 2. We have all different thickness of shims. ) degradations. 80 mm Measured Clearance . 18 mm = Ideal new shim size 2. 275 mm. © 2026 ShimLogic. 5mm in . o3bdjm, 56dlf, dq5y, 0vt3, bh7tdv, 41so4v, y3lquu, nwgqwd, cdzh, lydo,