callipygian 911

If I'd known this movement was gathering momentum, I probably would have opted for a MWFW. Since I've already got the LWFW sorted, I'll stick with that, but this seems like an awesome opportunity for the 95 crew.

Very cool of Rennsport Systems to resurrect this defunct product for us! It is certainly tempting...

saneproductions

Thanks Steve, I emailed you with my information.

mongrelcat

+993. 3.5 years and 12k miles with the Andial version on my car (both stock and Wong chip, and back to stock) and not one stall.

No doubt about that, and also ReinerFink for bringing it to the fore.

MielsOnWheels

Steve,

Sent you an email!

1990-964

So did I!

IainM

and another...

knorrena

Steve,

Forgive my ignorance, but why do your prices vary wrt the Porsche prices? Do yours use the LWF as a basis?

IHTFP

I am interested

I have never worked on a clutch before, is the flywheel a lifetime part or does it also have a lifespan?

Mike J

Not sure if you want to do your first DIY clutch job on a 993 but if you go slow its certianly doable.

The clutch system has quite a few wear points, with the clutch disk usually the #1 item, depending on the skill of the driver. Throwout bearings are usually pretty loose on the car after a fair amount of driving, as well as heat/burn spots on the flywheel/pressure plate, worn clutch fork, possible RMS leaking, clutch tube wear, and so on. So yes, its consumable, but how long they last are definitely related to how the car is driven, especially the skill of the driver, as well as the majority of the type of driving (city stop/go is harder of course than highway).

The default clutch is a dual-mass flywheel ( google if if you do not know what that is - much better explanations than I would forward out there..) that could also be worn, resulting in vibrations that can be read as misfires, soft engagement feel, or rattles after shutoff. The RS or equivalent mid-weight flywheel eliminates the dual mass with a single mass, but you also need to have a clutch disk with springs to uptake shocks/vibrations.

Cheers,

Mike

therossinator

My car has a few miles on it and I don't believe clutch work has been performed recently. What are the signs that it's on its last legs? Why is there so much talk about 1995 993s with this?

ReinerFink

The issue for 1995 cars is if you want to switch from the DMF to the LWF, the change in moment of inertia causes the revs to both increase and decrease more quickly. The 1995 had an ECU that has a difficult time reacting quickly enough to the changes in RPM, and therefore it can stall (RMP's drop too quickly for the ECU to tell the ISV to stabilize the idle), or hunt for idle (think tach bobbing between 700 and 1300 rpm continuously).

Some people with 1995 cars and LWF's are ok after cleaning their ISV, chipping their car, re-timing their cams, and fixing all of their vacuum leaks, and sacrificing a choice bull to the Porsche Gods. I knew this going into the project, but that is why I had two choice bull's lined up out back. Well, many T-bone steaks and hamburgers later the Schwabian gods are still angry (and more importantly the wife is too).

Starting in 1996 and above, the ECU was modified to handle this quick change in RPM's, so the issues described above are gone for the rest of the production.

The MWFW is a known good quantity for 1995 cars to eliminate some mass, and get a FW that is more robust (read up on threads with misfires wandering among cylinders and its most likely a bad DMF). Andial was using the same design and never had any cars stall, hunt for idle, etc.

Hope this sounds like a good sales pitch. I may even be able to float the cost of 4 of these if it comes to it.

ReinerFink

Someone asked in a PM if these would work in a 964, and the reply from Steve Weiner was:

Fits perfectly. Same for all 964 (except '89), 993, and GT3 (not RS).

So perhaps I need to cross post on the 964 forum...

Steve Weiner-Rennsport Systems

Porsche sends dealers updated pricing on the first of every month of the year. Sometimes things go down, other times prices adjust upward. Since we have no control over this, most quotes are valid for 30 days.

Yes,..we do use the factory RS LWF and modify it accordingly.

saneproductions

Looks like we have almost 10!!

Steve Weiner-Rennsport Systems

Hi Gents,

Looking at my e-mails, we are up to seven people interested in the MWF,......very close to the objective.

Any more takers?

I'll ping the 964 people to see if we can get a few more.