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Message: [QUOTE="Rich Rohrich, post: 1255029, member: 16241"] I stopped reading after I scanned down and saw the clearance. :) Your stuff looks like the Honda formula which is obviously correct. If you are in between shims I always lean towards the loose side. A couple of things to keep in mind: - You ALWAYS have to measure the shim you are taking out to make sure it is the size you think it is. You'd be surprised how often they are mismarked. - Even if you do the nice neat math the clearances don't always cooperate as expected. They usually do, but you ALWAYS have to verify the new clearance by turning the engine over by hand for a few cycles and then verifying the clearance again at TDC. Just make sure you buy extra shims smaller and larger than you think you need, and don't be surprised if the dealer only stocks them in 005mm increments. ;) My advice would be to buy a Hot Cams shim kit and save yourself a bunch of trips to the dealer. ;) Investing in a good metric 0-25mm micrometer will save you a ton of grief , and the SK (Facom) 804.P Metric feeler gauge makes this a lot easier. It has 19 blade sizes in 1/100mm (4-5-6-7-8-9-10-15-20-25-30-35-40-50-60-70-80-90-100) so you can measure the upper and lower limit of the clearance using a GO , NO-GO approach. You can get the feeler gauge for $6.00 and it's worth 10 times that when you need it. [url]http://www.ultimategarage.com/shop/part.php?products_id=444&osCsid=13eda459d776c5c74effbee68fb91b59[/url] [/QUOTE]