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Post by spud on Jun 27, 2017 9:28:15 GMT -8
Looking for any feedback, experience, opinions or hearsay About these either good or bad.
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Post by fast401 on Jun 27, 2017 9:41:29 GMT -8
I bought new matched gears for my 401 from Bulltear. So far.....so good.
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Post by sc397 on Jun 27, 2017 11:13:26 GMT -8
I don't think he can get them any more.
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Post by Deleted on Jun 28, 2017 18:17:10 GMT -8
I've been thinking of making some here at work, as working on a hobbing machine now. Think I'll look for a good clean set and give it a whirl.
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Post by sc397 on Jun 28, 2017 18:35:42 GMT -8
Dude, go for it. I will give you the best parts I have. Be careful with the metallurgy. I have seen some strange shit happen with those gears. I still think that the Zinc reduction in the oil has screwed up a lot of internal parts.
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Post by spud on Jun 28, 2017 18:46:34 GMT -8
I believe the elimination of zinc additive has caused problems with iron distributor gears in various engines. I also believe some of the gears manufactured in recent history for the amc application have various defects in metallurgy and gear design or manufacturing execution
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Post by 69Rebel on Jun 28, 2017 20:10:42 GMT -8
It's too bad that gear making (and timing covers) has apparently become a lost art. All the way up until the early 90s before the original AMC parts dried up, distributor gear failure evidently only ever happened due to oil passages being blocked off with sludge or shitty aftermarket timing gears.
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Post by Deleted on Jun 29, 2017 11:09:02 GMT -8
Not to worried about metallurgy. Would prefer a factory set rather than a set of bulltears or any other aftermarket. The cleaner the better, then I can put on CMM or maag, and map everything out. I can duplicate material and hardness with little concern. Easy peasy once all profiles are mapped out. I did make some gears for a big block toploader ford here a while back, dude was to cheap to buy replacements. Of course this is all done on my time- not company time. 😁
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Post by sc397 on Jun 29, 2017 11:44:11 GMT -8
The next time you are over I will pull a set out for you.
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Post by 71sc360 on Jun 29, 2017 14:36:16 GMT -8
I probably have an NOS set of originals around here somewhere but I am not sure I could find them. I will let you know if I do...
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