Im supposed to help my cousin this T-Day install a Detroit in the rear of his disco. It's a 95' series I. Im wondering if yall have any advice on the install. I have never actually done a detroit before, but i have put a lockright and a no-slip locker in my truck. Any advice or comments are much appreciated.

You will need to press on the bearings. Hackers like me can do this with a three pound sledge and a punch but others may choose a more symphathetic method.

Also you need to reset up the gears. Pattern and measure before installing and then get it as close to that after installing the detroit.

Ron

What exactly do you mean by pattern and measure?

If you don't already know, then this job is prolly out of your league.

Billster

What exactly do you mean by pattern and measure?

seek professional help.

It is the whole carrier, not like the lock-crap so you have to reset set up the gears.

Look Im not an idiot, and there has not been to many things thus far that I have not been able to figure out. I know that I don't have the most experience, but I have to start somewhere and going to a shop and paying someone to do it is not going to help me learn how. Plus being college students my cousin and I are a little strapped for cash to just get someone to do it. Thank you anyway for the info.

I am trying to help.

If you go to D-90.com and look up the ARB install in tech it explains it very well.

What I would do if I were you is pull the third member out and take it to a shop and have them install it.

It is not a matter of figuring it out so much as having the tools and ability to do it yourself.

I did mine on my own but I dropped more than the install cost on the tools (starrett [sic] dial indicator and a base).

Edit: that was almost too nice for POR. :flipoff2: :evil:

if you're not changing the gears then all you have to do is reset the backlash, which is easy. RTFM.

Thank you. I appreciate the advice, and I'll do some more research before I make a choice.

I can see my self continuing with wheelin for a long time so investing in tools might not be the worst thing. If the price is right.

PS- Thanks for not just being an ass about it.

It is more than backlash. You have to check everything. It is easier than regearing but you cannot assume it will be the same afterward and just tighten until you get the backlash you want.

Especially because the Detroit gets new bearings.

If you pull the diff out, any good shop should be able to put a detroit in, in about an hour so roughly $50 or so, a small price to pay to ensure than you don't brake r&p or destroy your Detroit.

Brad

I don't get it evil. If you don't mess with the pinion then the only thing to set is the backlash. Pinion depth and preload won't change. The contact pattern shouldn't change once the backlast is set since the gear set is the same.

He'd need to check for ring gear runout and reposition the ring gear as required and after setting the backlash he should run the pattern just to be sure, but I'm having a hard time figuring out what else you're referring to.

Enlighten me oh evil one.

Yes, odds are the pinion depth will be the same, but because with a detroit you repace the bearings with new sometimes this changes things a little, at least it did in the ARB I did. At least I assume this is what changed because everything else was set up the same.

The guy at Rovertym told me that I just need to check the backlash. He said it was as simple at taking the ring gear off of the old carrier, putting the new bearings on the Detriot, putting the ring gear on the Detroit carrier, and reinstalling. What is so hard about doing this that I would need to take it to someone else?

Chris

Measure the backlash on the old set up, set backlash the same with new set up plus a bit of preload for new bearings.thats all the ARB agents in Aus do. most of them don't know how to diagnose a diff problem or set up a pinion.and ARB's time allowance on installations doesn't permit looking for faults.
A friend of mine had an ARB fitted to his 101 at head office here in Melbourne. His pinion was so loose that it was gouging deeply into the original carrier. After he picked it up from ARB the pinion was still untouched. I told him to take it back to them to have a proper job done, but all they did was tighten up the pinion nut without removing the coverplate to recheck backlash. the result was 025'' backlash.and pinion gouges in the new ARB.
Bill.

I also won't have to install the new bearings, the guy did it before he sent the locker to me.