North Coast Cab

I have my motor coming out for major work and want to do a tranny R&R at the same time. The transmission has option #220 "locking differential 40% LSD. The LSD sucks at the track so I'm assuming the disks are shot at 113000 miles.
My question is can I just replace the disks and have aq good LSD tranny, or do I need to replace it?

TIA, John

Mark in Baltimore

You can have Guard Transmissions replace the disks and you will be fine. No need to replace the unit.

North Coast Cab

Sweet.
Unrelated question, what can I do for the rear suspension bushings since I have the motor out? I don;t see much availablr.

Paul902

+1.

I did that and I am very happy with the results. GT defined the term "customer service", the disks are purportedly better than the original disks, you might get to move from 1 disk/side to 2 disk/side, and since you are reusing your own diff housing, you should not have to reshim. It is all good!

Paul902

PS...that is one stunning 993!

Mark in Baltimore

Use ERP or Porsche Motorsports ($$$$$$) bearings if you have a track car. Maybe PM Chris Walrod to see if he has any rear poly bushings, which would be better for a street car.

TheOtherEric

Listen to these guys. I had Guard rebuild my factory lsd and it has been great on the track. Costs me around $500 or less.

the_buch

Does anyone know if you go with a full (not rebuilt) Guard lsd, is this a clutch or gear based diff??

Mark in Baltimore

Either one. Guards can do a clutch-type or torque sensing (gear) type.

Martin S.

He did my LSD...works great. It costs extra if he has to remove the ring gear...you may want to do that locally...also, the freight will be cheaper, out and back to Paul Guard.

North Coast Cab

Thanks for the input. I couldn't find the discs in PET so I was wondering about my options. Lots of time to get that done while the motor get a full rebuild. Trying to do the easy "while I'm in there" items and having the motor out certainly opens up the rear. Speaking of which, I had an '84 911, ''76 911 race car and 944 and all of those combined were easier than getting the motor out of the 993.

I will say the 993 is just an awesome car! It is solid and quiet and a blast on the track. I can't see ever letting this one go, especially since it is the last of the air cooled 911's. Only regret is it's a non-vram car, but what are you going to do.

Bill Verburg

even if PET has the lsd clutch disk you wil want GT's

Paddy

Mark, do you have an upgraded LSD in your car?

-Pat

Mark in Baltimore

Hey, Pat,

I have a Guards clutch-type LSD that I bought from Rob aka AC993C2S.

ZombiePorsche44

A chip & exhaust ought to work real well to make up the difference vs a vario 3.6L

ZP44