How Do You Reshime Intake Valves On A Honda Crf 450?
First, buy a shop manual. Then, measure the current valve clearance on the intake and exhaust valves – you definitely don’t want to just do the intake. Once you measure the current clearance, check it against the specifications in the manual – then you’ll need to purchase shims that are the correct thickness to make up the difference. The thing is, usually shims are sold in packs of 5 or 10 – all the same size. Hopefully your local dealer is willing to sell single shims, or you’re gonna be paying for way more shims than you need. Once you’re done, be extremely careful replacing the rocker cover – if it’s not done exactly to factory specs, the cam bearings can be pinched and can fail at operating temp. Not a cheap fix!
