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8 3/4 leaking ???

Posted By: a12rag

8 3/4 leaking ??? - 03/28/13 06:08 PM

So I have cleaned/painted my housing, got the center section rebuilt with the original 3.23 gears and a sure-grip.

I noticed when I was cleaning the housing, that some of the studs for the pumpkin, were "worn" . . . the car must have been driven on a lot of gravel roads ??? . . . I cleaned up the studs as best I could with the die set and tapped the nuts . . . however, when I put it back together, some of the nuts would not torque up tight . . . I had used a bit of silcon and a gasket . . . all seemed ok. But after sitting for a while (still haven't moved the car - getting everything else together on it) I have noticed it is leaking from the bottom part of the center section/housing.

I was thinking I should just get some new nuts and see if they will torque up ? Or do I need to replace the studs in the housing. Of course all this happens AFTER you have installed EVERYTHING !!! So much easier when it is out of the car !! . . .

Thanks,

Mark
Posted By: JohnRR

Re: 8 3/4 leaking ??? - 03/28/13 06:15 PM

Change the nuts , if they still won't torque then you need to replace the studs .

Also make sure it's leaking from the gasket seam and not the weld seam underneath.

Did you use a gasket ?

When cleaning threads it's best to use thread chasers instead of taps and dies .
Posted By: RSNOMO

Re: 8 3/4 leaking ??? - 03/28/13 06:31 PM

If it t'was me...

I'd replace all studs together with new hardware...

I like a gasket(dry)...
Posted By: a12rag

Re: 8 3/4 leaking ??? - 03/28/13 06:40 PM

Yup, I did use a gasket and a thin layer of silicone on one side . . . am sure it is not leaking from the weld, but the gasket . . . so who would have the correct studs ??? Doctor Diff ?? . . .

Thanks,

Mark
Posted By: RSNOMO

Re: 8 3/4 leaking ??? - 03/28/13 06:51 PM

Your call, but if it was me, I'd pull one out and make my way to the nearest auto parts, or some place that sells fasteners...
Posted By: stumpy

Re: 8 3/4 leaking ??? - 03/28/13 08:55 PM

Edited because I was wrong. These are special studs. Sorry.
Posted By: a12rag

Re: 8 3/4 leaking ??? - 03/28/13 09:11 PM

No Ace Hardware up in my neck of the woods (Calgary Canada) . . .
Posted By: RapidRobert

Re: 8 3/4 leaking ??? - 03/28/13 09:20 PM

Quote:

Change the nuts , if they still won't torque then you need to replace the studs.

X2 & if it works you dont have to open it up to get at the studs. EDIT if you have enough extra threads showing you might add a washer(s) before the nut so you end up on fresh(er) threads. All you need is for the nut to end up flush
Posted By: Cab_Burge

Re: 8 3/4 leaking ??? - 03/28/13 11:32 PM

Did you use thread sealer on the nuts and studs? If not try that first, get them really clean first though I had a similar issue reusing the original studs that had been removed to narrow the housing, just one or two of them leaked on the drivers side. Mopar use to install soft flat copper washers, maybe some other type of soft meatl also(CRS ) on a lot of the early cars, the washers would squish out and seal the threads, they where a bear to get off some times but they did help seal the unit up real well
Posted By: JohnRR

Re: 8 3/4 leaking ??? - 03/28/13 11:32 PM

I would check with Dr. Diff for the studs.
Posted By: scratchnfotraction

Re: 8 3/4 leaking ??? - 03/29/13 03:48 AM

Quote:

I would check with Dr. Diff for the studs.



x2

Dr.Diff or Moser Engineering
Posted By: a12rag

Re: 8 3/4 leaking ??? - 03/30/13 01:50 PM

Cass said he has a stud/nut kit. Am gonna try the new nut route first. . . . Should be able to get those from local supply. Like the copper washer idea too - I even have those in the shop now !

Thanks

Mark
Posted By: belv2vert66

Re: 8 3/4 leaking ??? - 03/30/13 02:09 PM

Not to Hijack,

but what is the proper way to install the new studs. I have to admit that pulling them in with the nuts did not end well for me.
Posted By: a12rag

Re: 8 3/4 leaking ??? - 03/30/13 02:20 PM

Good question . . . Aren't the originals swaged in place ?
Posted By: RapidRobert

Re: 8 3/4 leaking ??? - 03/30/13 06:23 PM

Quote:

Aren't the originals swaged in place ?

No not swedged like wheel studs, I believe you just tap em out from the outside & drive new ones in from the inside
Posted By: a12rag

Re: 8 3/4 leaking ??? - 04/14/13 11:16 PM

Update . . . . got new nuts and copper washers, installed and looks like that fixed the leaking !! Everything tightened up great !!!
Posted By: Cab_Burge

Re: 8 3/4 leaking ??? - 04/14/13 11:33 PM

Quote:

Update . . . . got new nuts and copper washers, installed and looks like that fixed the leaking !! Everything tightened up great !!!

Thanks for letting us know, knowledge is power, and easier for someone else to use when it is posted like this
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