snoz

Have you taken any steps to determine what exactly is wrong with the car, or are you just intent on getting rid of it?

If you just have a bad diferential, it's not a huge project to fix. At any rate, you need to find out what's wrong if you expect anyone to be interested in buying the car or its parts.

Landseer

I'll take it off your hands.

Promise I won't part it out, nor otherwise make a single dime without sharing it 50/50.

Would be coming with UHaul trailer from Indiana.

I just need to know the engine runs well.

jeff spahn

It's not ironic. I mean like here in Iowa we don't have smog certification. We don't have smog either. Heck, there's more cows than people in this state. Taxes are low, compared to California, plus there are a lower number of crazies here.

dr bob

E. :

The used trans from 928 Int'l comes with the diff. For grins, you could pull the rear cover off the one you have and survey the damage. Pix >> 1k words.

Mark Anderson

Eric it could be as simple as a broken spider gear or shaft, both are cheap plus they are not that difficult to get to.
I'll even send them to you no charge.

Emickelsen

Again, Thanks for the great input and encouragement. Sorry, in rereading the post, I didn't mean to make it sound so harsh.

Not without removing parts, but have looked at it a couple of times. Now that the holidays are over, I may have more time. I have it on non-op tags right now, so I haven't been able to drive it to reproduce the problems. I plan on trying to jack it up and run it this weekend.

Am I just intent on getting rid of it? No. I love my car. Its just to far gone right now. I just don't have the time, money, inclination, or gumption to get it running right now. Poor excuses, I know. I need to concentrate on getting something I can rely on for the time being.

The engine runs great. It's the best thing on the car (aside from the brand new tires with less than a 100 miles on them I just put on). It wouldn't be right or fair for me to capitolize on half of all your work. If you take it, it's yours to do waht you want with.

Last I checked, 928 Intl didn't have any in stock. I'll check again. If I get that far, I will certainly take many pic's.

That's very generous of you Mark, thank you!! I'll try and look into it, and happily pay any shipping. You guy's have been WAY helpful, and i'm grateful for it.

Emickelsen

actually it kinda is.

Emickelsen

So finally got to take a closer look. With out taking anything off or apart, this is what I found. It appears that the bolts holding the CV joint to the final drive flange, are (or were) scraping on the transmission housing. I DID just do my CV boots, but I am confident that I put it back together correctly. I did not have any parts or spacers or anything left over. I find it hard to believe I screwed the bolts in to far. Could something inside the differential have given way to allow the CV joint to ride closer the housing?

Also, when I jacked the car up and turned one of the wheels, the other wheel turned the same direction. Isn't it supposed to turn the oppisite direction??

IcemanG17

Erik
Okay.....that is quite odd about your diff.....if it is an open diff then yes it should spin opposite direction....LSD spins the same way

I have an automatic at my shop from the Estate lemons racer I built....it had 143k on it when the odo broke, but never missed a beat in nearly 70 hours on track racing...... I will give it to you for FREE....just pick it up..... Its worth it if it keeps another 928er running.... I would change the fluids-filter and it should run for a while longer......a rebuild isn't a horrible idea & I have a shop locally that rebuilt my 88 S4 trans that is in the Estate right now....it runs even better, but could be pricey depending on whats inside?

Speedtoys

Cool photo:

Your bolts are missing these under them: 911 332 191 00

http://www.autoatlanta.com/porsche-p...-86/502-06.php

Mark Anderson

Good eye

Rob Edwards

Those french locks are ~1mm thick (don't have one to measure, or you can be sure I'd measure it!), might be enough to get the ends of the SHCS's to rub on the axle flanges....

Landseer

The bolt length changes (gets shorter) at 85 to match the thinner inner CV.
The grease cap is added at 85, also, between transaxle flange and inner CV, but it isn't thick enough to compensate, nor will it be even if the lock plates are also used. Actually, the transaxle flange also changes to accomodate the grease cap, but I've found it doesn't matter whether you change them out or not.

If you use a later CV on a pre-85 car, without using the later bolts, the bolts will hit the transaxle case.

I have installed 84 CV and 84 bolts, without the washer / lock plates, and not had them quite hit the transaxle.

I have installed later 85 axles/cv's as well as later 86 axles/cv's on 84 cars and needed to source or cut the bolts.

Those look to me like the much thinner 85+ inner CV's.
If indeed the case, then your car's early bolts cannot be used with them without being lopped-off, regardless of lack of the lock plates.

If you need such, I have a set of early and late axles in the garage right now and can show pictures, but I think you get the point.

How did you guys even install that setup?
Didn't you need to rotate the axles while torquing the bolts 1 by 1, just to get clean access with a torque wrench?

Good eye, again, by Jeff. Power of rennlist.

Emickelsen

Good eye indeed. VERY interesting however. I changed nothing. Same bolts and everything else that I took off went right back on. And yes, I had to rotate the axles to get them off and on. They weren't there before, yet that obviously makes sense. I don't remember seeing anything in the WSM about it either.

SOOOOOO, back to the differential. Could that have damaged the internal workings, or is that a seperate issue? AND can the differential be worked on with the tranny IN the car? I would imagine not.

928Myles

I know that you can remove the rear cover while everything is in the car (a common step when you drain the diff oil before checking the filler plug will come out). This should give you access to at least have a good look at everything and make an assessment from there. Some work should be able to be carried out insitu but probably not all. You MAY need to remove to change bearings and set up the diff for clearance and backlash but I don't know.

Myles