Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
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I have a late 80's L98, was carb but now TPI, ZZ3 cam and lots of other stuff.
My problem is that the distributor gear keeps getting warn down by the cam.
Prior to installing the ZZ3 cam, I researched everywhere to see if I needed a special cam gear. No one could confirm either way, so I went with the standard HEI from the early 80's. Low and behold, the cam wore a grove into the dist gear.
I did my TPI swap in the spring and I used the small distributor with external coil ... from a roller cam engine. I thought this was safe. Well I pulled the distributor out last week, and it too is now showing signs of a grove.
The only thing I can blame this on is the high volume oil pump. I know that it takes a more effort to turn, but it seems odd that the dist gear takes a beating.
I read up on GM's melonised gear. I doubt that it would help since the melonising is a coating, and judging from the wear on the gear, it would not help.
Is it possible I don't have enough oil getting to the dist gear?
Anyone else with a ZZ3 cam and similar experiences?
you need a bronze gear if you're running an aftermarket billet steel roller. if you're running a factory or aftermarket hydrolic roller you shouldn't need a bronze gear.
