Rapid distributor gear wear on roller cam 351

fxbill · 01-05-2002, 07:55 PM

Thanks,
I generally do quite a bit of research before any major project and even after building engines for many years, (my first was a tri-power 348 in a 58 Chevy...and it was new!lol), I still rely on my local speed shop for things pertaining to the exact make and model.....in this case all the info I got was bad and it has cost me.

The new gear seemed OK....wear hasn't been excessive, but I puched it a little today and the thing just stalled. I was afraid the gear had gone again, but since it sounded WAY advanced when I tried to restart it I retarded it....like almost 90 degrees and it fired right back up again and got me home. The wear pattern looks centered on the dist gear although it doesn't appear to be as deep as it could. The cam gear looks fine..no feathering on the gear edges, but now I have the problem that obviously the gear somehow jumped 6 or 7 teeth to produce the problem.....I'm baffled. I seem to be getting pretty good mesh, but there's no way to adjust that even if it was wrong.....I have no idea what could cause the thing to go a full 90 degrees out of time except for the gears jumping teeth and yet there's no sign of chipped teeth and the wear pattern is about halfway down the depth of the dist gear..more than enough bite.
Bill

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01-05-2002, 07:55 PM	#4
fxbill Registered Member Join Date: Jan 2002 Posts: 3	Thanks, I generally do quite a bit of research before any major project and even after building engines for many years, (my first was a tri-power 348 in a 58 Chevy...and it was new!lol), I still rely on my local speed shop for things pertaining to the exact make and model.....in this case all the info I got was bad and it has cost me. The new gear seemed OK....wear hasn't been excessive, but I puched it a little today and the thing just stalled. I was afraid the gear had gone again, but since it sounded WAY advanced when I tried to restart it I retarded it....like almost 90 degrees and it fired right back up again and got me home. The wear pattern looks centered on the dist gear although it doesn't appear to be as deep as it could. The cam gear looks fine..no feathering on the gear edges, but now I have the problem that obviously the gear somehow jumped 6 or 7 teeth to produce the problem.....I'm baffled. I seem to be getting pretty good mesh, but there's no way to adjust that even if it was wrong.....I have no idea what could cause the thing to go a full 90 degrees out of time except for the gears jumping teeth and yet there's no sign of chipped teeth and the wear pattern is about halfway down the depth of the dist gear..more than enough bite. Bill