96lt4c4

iTrader: (5)

Just built this 10 bolt as you can see in this thread.

https://ls1tech.com/forums/gears-axl...r-10-bolt.html

I took it easy on it for about 200 miles. Took on a few 30-mile trips to work and back. Drove it on the interstate for about 30 minutes a few times. About 200 miles of normal driving. Anyway I took a friend for a ride in the car last Sunday and I rolled on it in 1st, broke the tires loose and hit 2nd..not real hard. Now the danm thing is whining.... I know everyone says 500 miles, but really....the factory does not put 500 miles on a ring and pinion before the car leaves and you cant tell me that when these cars were new that they wernt run hard a few times right off the bat. I am going to tear into it this weekend and look for anything obvious. Something had to have moved. I had to drive it about 20 miles with it making noise so I don’t think it would be hurt. It was silent up until that point.

Everything in it is new, pinion preload at 25 inch pounds, new crush collar, new pinion nut with red loctite. Back lash at .006. I like to reuse the factory style shims on the carrier, I have a small collection of them but couldn’t get the backlash I wanted using them this time so I had to use the shim packs. I have read that some manufactures use sheet metal to make shims and that they can compress under load. When I open it up I will check the backlash first to see if it has opened up any, then check pattern to see what it looks like. I could see this happening if I dumped the clutch but danm....

wrd1972

iTrader: (12)

Yeah something moved. Get a backlash measurement before you pull the carrier.

96lt4c4

iTrader: (5)

Yup, I am going to check the backlash first, pattern 2nd, then pull the carrier, and check pinion preload.

96lt4c4

iTrader: (5)

I guess I didnt have the carrier tight enough. The backlash opened up.002. Went from .006 to .008. I closed it up to .005. I will drive it tomorrow.

madmike9396

iTrader: (29)

should of just saved for something better. thats what im in the process of doing ! my rearend is whining like a sob now. no use in spending $ on something thats just going to give out quick IMO

Good luck with ur issue

MUSTANGBRKR02

iTrader: (91)

He is building a diy 9" right now I believe.

ripinLS1

iTrader: (1)

10 bolts are junk in these cars. I had (4) 10 bolts in mine now have a 12 bolt in it.

96lt4c4

iTrader: (5)

I am building a 9 inch. I am just messing around with the 10 bolt. I would like for it to be in good working order when I yank it out, so that I can sell it if I want to.

madmike9396

iTrader: (29)

yeah totally understandable thats what my thoughts are. i may have mine gone thru so i can sell it also.

Intercooler2

iTrader: (24)

Did your pinion nut loosen up? Did you loc-tite it? When you say 25 in lbs preload on the pinion how are you measuring? What is the status of the rear when you measure the pinion preload?

96lt4c4

iTrader: (5)

Like this, inch pound tourqe wrench. I dont think the nut came loose, its a new nut. I put red loc-tite on it and peaned the end of it. They were new bearings and set to 25 inch pounds. They still felt pretty tight by hand when I had the carrier out so I didnt check. The pattern showed that the pinion hadnt moved so I left it alone. If it still make noise then I am probably just spend the time on my 9" and leave it alone. I need to go out and drive it but I havent gotten off the couch. Its like 18 degrees out there...

Intercooler2

iTrader: (24)

You have the right wrench. With nothing in the rear but the pinion. Then snug the nut measuring every little turn until you get 25 inch lbs to turn the pinion.

96lt4c4

iTrader: (5)

Still making noise, not as much, but still there....I am done. All my time is going into the 9

Intercooler2

iTrader: (24)

It's hard to get them real quite. My 9" even makes a little noise on decel.

01ssreda4

iTrader: (96)

Dont think for a minute that M6s cant bust 10 bolts with just one hard shift. The ten bolts just aren't cut out for the job of being behind the manual. It seems to me everything was done as best as could be done. Sometimes its just not made to be I guess. Did the pattern move at all?

Big Al

iTrader: (1)

Once they start whining, it's rare to get it to stop.

With this type of rear axle, you need to have the proper pre-load or crush on the carrier bearings. Measured with the pinion out. And if you hammer the shims in, your looking for trouble. Make a case spreader and use it.

Al

96lt4c4

iTrader: (5)

The pattern looked the same to me...I dont get it. I am tired of messing with it I know that much. I might mess with it when I take it out to put the 9 in just to torubleshoot it and learn from it. I am hammering the shims in, I think that is what caused my factory housing to have some run out on the ring gear. Takening the carrier in and out so many times and hammering the shims in. I know that it flares them out on the ends. I hate to let stuff beat me but this has done it. If I had a lift and was not doing it on my back it might be a different story.

96lt4c4

iTrader: (5)

How do you make a case spreader? just wondering.

Never mind just found some pictures. Looks pretty simple. Maybe next time.

01ssreda4

iTrader: (96)

Also consider a solid pinion spacer. About $20 and keeps the crush sleeve from shifting after the install.

Big Al

iTrader: (1)

Did you try to pry the carried back and forth while you were in there? If the carrier can shift, you lost Carrier pre-load is important.

12 bolts are not the easiest rear to deal with but just one Dana will make a 12 bolt seem like child's play.

When I worked on 12 bolts I used a Pinion nut with the end ground off so it was easy to get on and off and I set Pinion depth with a used crush sleeve. Just hammer it out a tad. Crushing a new sleeve can be brutal, DO NOT use an impact wrench to crush it. Never back the nut off. If you get the pre-load too tight throw the new nut and sleeve away! I know, it's a lot of extra work but that's they way to do it.

Have found no advantage going to a solid spacer over a crush sleeve. IF you use a new nut and sleeve.

Al