i did finish the last job, test drove it and everything was fine...here it is sitting afterwards.
back up to pull the diff:
old 4.3 out and everything..
now, for the nightmare. my plan was to put in the 6 month used 4.778 with all new koyo bearings. this is a long story. skip the text enclosed by stars for a too long; didnt read version below.
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just recieved it back here from nikki hes a great guy that ive known for a while and he really knows his stuff when it comes to setting up diffs, he did my cousin's and friend's before and they are perfect..
i was pretty excited. but i shouldnt have been. as soon as i take it out for a VERY QUICK test drive...its HOWLING like crazy! I pull back into my garage almost immediately. FUCK! i was so frustrated. the howling was so bad it wasn't simply something you can live with in a track car. i immediately knew it was the ring and pinion. but just to be sure, i took it on over to weir performance in american canyon.
i talked to spence for a bit and he told me that it was most likely the ring and pinion...i was calm and let the guy who sold it to me know. he was responsive and so i was happy about that. spence told me that i could keep it as a track only car, but theres no way i wanted to do that, the howling was just way too bad.
i called up nikki and let him know, and he also agreed that i could keep it as a track car, but he could take it back in one more time to be absolutely sure that it wasnt a setup problem.
Took it back to nikki, and he vigorously tested the ring and pinion setup and checked over his work. yup, everything within spec. backlash was set to .006in in multiple spots, 13 inch lbs preload on the rear pinion bearing, and good gear mesh. gears didnt look great though so he double checked the runout and the backlash...no good! the r&p was infact bad. it was worn unevenly! nikki fixed a little bit of the runout, and set backlash back to .007in still within fsm spec to maybe have it be less loud.
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TL;DR VERSION: 3rd member recieved back, hows like crazy. r&p suspected to be bad. return to have the setup double checked and it checks out good, the problem is in fact the r&p, diff re-setup to looser specs but still within factory limits.
i tried this new setup today, it still howls pretty bad but i can see it being liveable as a track car. but thats not what i wanted however. i bought a r&p that was supposedly only 6 months old and 'didnt howl or whine at all'. not happy with this setup at all, but buying a new r&p and paying second installation is going to run me 455 dollars. going to be very hard to afford. i have asked the guy for my money back for the r&p, and ill be waiting to see if he will come through. hopefully he does as he is a nice guy and has been responsive so far. but i dropped the question finally just a few minutes ago now that i know for sure it was the r&p, and you never can really know how people will act once you want your money back.
if the guy gives me back my money, i will buy a new r&p, and have it re-set up.
if he does not, i will RUNIT the way it is. according to nikki, it is possible that the uneven wear will fix itself with these new settings, but unlikely, the most will probably happen is the howling will slightly be reduced. if i hear the gears getting worse, i will pull it and buy a new ring and pinion asap.
i will keep people updated on what the guy says. lesson learned. just buy new when it comes to important things like this.
so yeah thats what ive been doing for those past days i didnt post. dealing with that nightmare of a rear end...
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