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I have read the Bently manual, Wilson Manual, Fisher, Hayes and Chilton's: I have only seen the cam gear selection referenced in the Fisher and the Bently manual. They say that the factory selects the gear diameter which varies in probably in hundreth's of an inch to match the the way the cam journal and crank journal machine variation error. Also Fisher says that racers and special machine shops have piles of these and they swap the gears up until they find the right clearance between gear teeth. My question is how do I go about this? No one has given practical solutions . Do I purchase a pile of these and find the right one ? After market companies do not sell gears by tolerance , I called several and one size fits all. Or do I measure for a very bad tight indication and reject it, otherwise accept it, or then return the part until I get an acceptable one? I am thinking of buying steel straight cam and crank gears together with an aftermarket cam. Nearly all cams that have special grinds are only made for the flat gear configuration (of course for flat cam gear pumps) . These are all one size fits all. It is a definite possiblity that mine was too tight in tolerance and this might have aggrivated the existing wear of my junkyard cam together with all of the other factors I have mentioned. The gear I will buy for the cam will be steel, I am paranoid, I must have my car running soon , I am addicted to my car and the fast lane, my Volvo just does not feel as cool. I am thinking of steel gear low end torque cam and hydraulic lifters, it is a dream to have hydraulic lifters because I like an engine I rarely mess with until it is broke or I wish to make better, not fix or readjust maintenence. I know , with these the engine will no longer sound air cooled and will no longer give major valve train worries, tightening/loosening etc... By the way I got swivel adjusters. I will see if I can get the hydraulic stuff from Mexico, off thier old new beetle parts shop. Has anyone ever run hydrauliucs and or the straight steel gears on our engines ? I hope I have the bucks for this. I know I have to machine the case for the lifters and have a hydraulic acm to boot. Mexican lifters cost around 4 bucks. What is the difference if I use for an example , lifters from Ford, Chevy etc.. from their big engine lines or the VW aftermarket stuff or VW Mexican , the case still needs to be macined and they seem to have approx hieght ? LEON MARTINEZ 1969 SQUREBACK EFI/AUTO SAN DIEGO AND TIJUANA ------------------------------------------------------------------- Search old messages on the Web! Visit http://www.vwtype3.org/list/