Re: FOUND HORSEPOWER!!!!
What is it and how do I tell if mines worn?
The cam drive belt runs off a cogged pulley on the crankshaft. This pulley is held on with a flange head bolt and there is a half moon key that fits in the crankshaft and this pulley slides up over the half moon key. The only way I would know to tell you how to check it is to take the belts, fan, fan pulley, timing cover, loosen timing belt tensioner and remove timing belt, and this gets you down to the cam drive pulley on the crankshaft. Remove the bolt from the end of the crankshaft and the cam drive pulley should slide off. The halfmoon key is then exposed. Remove it from it's slot and check it for wear. It should be smooth on its sides with no wear grooves. Be careful when removing the bolt from the end of the crank. If it gets hard to turn, work it back in and out little at a time and keep spraying penetrating oil on it until you've worked it all the way out. Don't try to force it out with a cheater pipe or impact 'cause it will break off in the end of the crank.
88 Sam 4.16,welded rear,lockt frnt,31"Hi-tech MTR's, 4.5 spoa,5k Ramsey,rears in frnt w/ML's, Calmini cam n header.