Events of the night for 944 please help...

[beefey]

Well I have some things that happened tonight on my mind that I'm terrified about.

The first thing I can deal with. The second I'm totally unsure about. The car is an 88 951.

I was taking off the wheels and the lug nut simply just crumbled and spun... And no I did not use an impact or anything similar. I simply used a breaker bar with a 19mm socket caressing the nut. Has this happened to any of you? How do you get it off?

The rear end was seized up so I started the engine and put it in 1st and let out the clutch... There was a large clunk and only the driver side wheel spun. Does this car have possi? Should both wheels spin, did I break something in the diff? The driver side spins nicely.

Thank you for your help I appreciate it.
Beefey

[porsche4life]

Either the diff has issues or a cv joint failed. Look under the rear and see if a half shaft is dangling.

[beefey]

No no shaft dangle going on... The Brake pad was rusted to the caliper. I broke that free. The car goes back and forth with some drag but still moves. If it had an LSD in the car wouldn't only one wheel spin?

[porsche4life]

If the drivers spins freely then something on the pass is locked up.

[beefey]

Ouch! What should I try next? I'm trying to get to the bottom of this. Do you think someting could have sheared actually in the diff? Those gears can take a good beating cant they?

-Beefey

[porsche4life]

That depends how locked up things were. But I would inspect the cv joints and halfshafts first.

[beefey]

Ah problem solved! It turns out the inside drum of the brake rotor was rusted solid to the parking brake so it couldnt turn... still pretty odd how one wheel can turn and not the other.

Any idea about the lug nuts?

-Beefey

[bud9344]

Show me some picture off the lug nut

[beefey]

The nut is nothing more than just a stripped round nut... The corners just fell off like kinda crumbling.

[Jeff Laurence]

There are nut removers that look like an inside out 'easy out' if you know what I mean . It has a fast left hand thread that bites into whats left of the nut, then you just unscrew it as normal.I've never used one ,but they look like they would work, and they aren't much to buy.
Good Luck

[banana944]

This happened to me on a parts car I had. The front driver lug nut stripped, but I wanted the Fuchs! So I took the whole brake and strut assembly off so I could put it on a bench. Then I used a dremel with a drill type bit almost, small and round. I used this bit on each side of the lug drilling staight down to the rim (without hitting the rim), and then the same on the other side and then I used a screwdriver seperate the lug nut into 2 pieces. It was a major PITA and if the lug thats broken for you is on the rear, well... Good Luck.

[bud9344]

Save the rim and save the brake partand don't have to take anything off the car.
But You may have to replace the stud, Drill with a saw hole just saw the lug nut it self and be careful not yo saw the rim. I did my 87 930 it save the rim and not damage anything on the car, other than replacing the stud. Takes me a year to figure this one out the saves way. I have tough off using any tool mention in this treat.



Originally I bouth it from Snap On but home Depo sell them As well and have better price then Snap On. The size is stamp 3/4 19mm.
Good Luck

--------------------------
Bud

87 930 Black
86 951 Black
87 944S White
86 944 N/A part car
83 944 N/A Black
83 944 N/A White

[Dantilla]

A 3/4 hole saw without the center bit will cut off a lug nut without damaging the stud. I've done this a few times after buying cars at an auction that didn't come with the keys for the locking lugs.

If one side spins, it is because you DON'T have a limited-slip diff. The open diff is just doing it's job- Allowing slip between the two sides. If you had a LSD, either the engine would have died, or you would have heard that scary noise from both sides as the rusty drums broke free.

[beefey]

Thanks guys, that is an amazing idea! I was going to try to use an Easy-Out into the head of the lug nut but this sounds way better. What is porsche trying to prove by making these things out of like fiberglass?

[porsche4life]

They are aluminum alloy to save weight. Every detail counts.

[Jeff Laurence]

I have a set of magnesium nuts that are incredibly light- keep 'em painted and use antiseize and have not had a problem--until now ,of course.

[drift a 944]

The reason one wheel was spinning was because your car probably has an open differential. An LSD (limited slip differential) forces both wheels to spin, but I believe the LSD was still an option on an 88 951.

An easy way to double check is to jack up the rear of the car, and spin one wheel by hand. If the opposite wheel turns the same way, you have LSD. If the opposite wheel spins the opposite direction, you have a regular open diff.

Unless of course your LSD is shot from the discs slipping. But that typically only happens if the car has been tracked or driven hard, and usually it will still have enough grip to prove the above test right.

[flash968]

the aluminum nuts have a lifespan of about 25 removals and installations before they begin to lose the ability to retain torque - they should be replaced after that

they are known to fail, and are not allowed in most classes of racing for that reason

anti-seize will help prevent the nuts from freezing, but it also reduces the torque value - there is a chart floating around that shows how much, but i can't seem to find it at the moment

[porsche4life]

Originally Posted by drift a 944

The reason one wheel was spinning was because your car probably has an open differential. An LSD (limited slip differential) forces both wheels to spin, but I believe the LSD was still an option on an 88 951.

An easy way to double check is to jack up the rear of the car, and spin one wheel by hand. If the opposite wheel turns the same way, you have LSD. If the opposite wheel spins the opposite direction, you have a regular open diff.

Unless of course your LSD is shot from the discs slipping. But that typically only happens if the car has been tracked or driven hard, and usually it will still have enough grip to prove the above test right.

I stand corrected good sir.

[jsb944]

I have a set of magnesium nuts that are incredibly light- keep 'em painted and use antiseize and have not had a problem--until now ,of course.

Jeff...I had to laugh when I read this....this post would have been equally at home in a totally different type of web-forum!