Zap Racing

Is anybody in the Houston area got any experiance in rebuilding a 10 bolt posi rearend. It seems mine has quit pulling on the left side after the last trip to the strip. I have the tools and equiptment (including a dial indicater) necessary and am not afraid to do the work, just can't find the info I need to know what I am doing to do it right.

If not, does anybody know where there might be a good tech article on this subject?

Craig

pasky

Heya Zap, why not just go with a zexel torsen unit? Im not sure if you still got the stocker or what not, but when I bought a zexel torsen for my ten bolt, all I did was take the old carrier out, put the ring gear on the zexel and bolted it back in. As long as you don't move the pinion gear, there is no need to use a dial indicator as long as you keep the same shims. Sorry if this doesn't help.

Zap Racing

Where did U get it and how much?

pasky

I bought it for $100, they were the SLP take offs. They had like 5 miles on them. Basically they took them out of Z28 cars that were getting the SS package. SLP sold them for $100 because they couldn't sell them for new price since they were on the new cars for about 5 miles. They have long run out of supply now for that price. You can get them from summit and just about any other performance catalogue. Not sure how much they go regularly. I know the Heavy Duty units go for $400, not sure on the regular zexel torsens. The best part is they don't use clutches, its more of a locker.

pasky

Crud, just looked, apparently slp is the only one that carries these and I can't find the normal unit. Only thier heavy duty and it runs $499. =/.

xtremeirocz

is it the clutches inside that have gone? if so is is easy to re pack clutches we could even over pack them to give you the feel of a true posi. i did it once before and it wasnt that bad on a 96 f- body 10 bolt

Zap Racing

Not sure--have not gone into it yet--just know it's not pulling on left side after the last trip to Sealy.

Have to fix the engine first--heads are coming off in the next couple days and going to the shop depending on what I find.

Zap Racing

Have to excuse my ignorance--what do U mean "the feel of a true posi"

Craig

FbodTrek

He means a locker diff. (Mini spool). You can get a summit 10 bolt posi unit for about 400 bux... OR go mini spool for 100 (gonna suck as a daily driver in the rain though). Your best bet is a rebuild, I'll ask a guy I work with how much it will run for ya (discount price, lol).

Zap Racing

The rear end in my 89 IROC is out of a 92. Do u know id it is a rebuilable unit with clutches or one that cannot be rebuilt.

I have done a couple searches on the thirdgeb tech boards, and read/learned their were/are several different types but I'm not sure which type of rearend I have.

xtremeirocz

i mean it will still alow some slip around corners but will lock up really well straight line, my friends 10 bolt chirped around corners because we packed it tight

FbodTrek

The non-rbuildable ones have cone sets instead of cltches I believe (Borg Warner). Most Posi units can be rebuilt as far as I know. Call Summit tech line and ask them, they REALLY know their stuff (surprisingly).

xtremeirocz

did he ever get it figured out?

VILeninDM

Zap, if you are still looking for info, try this link. I am doing a gear swap myself right now and using that 75% along with Randy's ring+pinion manual (download from their site) and Helms manual.

You may also want to check out Auburn differentials. I heard they were fairly decent especially for autocrossing

Zap Racing

Thanks--I'll look into that.

I've been messing with getting the engine back together first, and then turn my attention to the rear end.

89ROC

I finally replied to your PM. Sorry it took so long. My computer has been down for almost 1 month now. Just call my cell & I can walk you thru it. (the # is in the PM).

Jason

Zap Racing

THANKS DUDE!