Yes, and should be done during the cluch/flywheel job. Part is about $30.

 

I asked my indy about this last May, his response was, "makes a great paperweight!".

 

+1

We actually include the RMS in our clutch kits along with other odds and ends that need to be replaced when doing the job

 

Yes. The typical lifespan of the DMF is about 100K. When I did my last clutch job (90K) I removed the flywheel and replaced it with a used 40K+ one that a fellow rennlister donated to me. I did this to save money. New flywheels are expensive.

 

I have a 96 C4S and was able to pull the trans out while leaving the engine in. I also did the rear main seal since it was weeping. I went with the Lwf kit from FD and I am very happy. I had read about the noise and was concerned as well. I have no complaints. The noise is minimal really. At idle the noise is hardly noticeable. at low rpms in first and second (less than 2500-3000) it is a bit noisy but not bad.

 

What is cost of the LWF vs. DMF ?

 

The mega computer broke and brought the company down. All kinds of technicians came and could not fix it. Out of desperation they called a technician that an employee of the company recommended, a single man operation person. The technician showed up took a look a computer, reached out to his tool box and pulled a screw driver. He removed a panel, reached into the computer and tightened a screw. He said try it now. The computer fired up and started humming.

The company owner came and congratulated the technician for saving the day. He then asked for the bill. The technician said it will be $1000. The owner replied $1000 for five minutes of wok? Please give me an itemized bill so that I can see what cost so much. No problem answered the technician. Next they the itemized bill arrived.

One Man Shop. Inc

Itemized Bill:

Tightening of the screw ---------- $10
Knowing which screw to tighten -- $990

Thank you for your business


The moral of the story is that they can probably do it in four hours but they are going to charge you four hours worth plus the knowledge of knowing which screw to tighten

 

If you are going with a clutch "kit" that includes extras such as a main seal, release bearing, etc., whomever you buy it from, find out if those extras are cheap jobber units or OEM.

People don't replace their input shaft seal while they are in there?

 

On the trans side?
Extremely rare failure part
We have only seen one seeping over the years

Funny, these Porsches

Seriously though, the shift shaft seal yes, input shaft no

 

Probably because the gear lube level is lower than the bottom of the seal.

I replace them since they are "right there" when I'm doing a clutch job.

 

Really?
Done one on a 993?
How many?

 

Mark-how dare you. What does your experience have to do with this? You need to provide scientific analysis!

-insert rolling eye here-

 

Not yet, but if it is easily accessible from the outside, I will. I say that because the smart people at Mazda decided to install a transmission input shaft seal from the inside of the transmission on a Mazda GLC...a first that I have seen. Other cars, Ford, VW and a Porsche...etc that I have replaced them on, installed them in the normal manner.

Why, what is so particular on a 993?

 

Ed, I hope you're not involved in anything technical. I'd hate to fly in an aircraft you designed or worked on.

 

Actually, I've built and flown my own plane. You have no clue on many things, including my skills or how I do things. I'm actually pretty thorough. The key difference between you and I, is I am not afraid of my own shadow, and don't need daily proof that the sky isn't falling. Your arrogance gets old.