fc-racer

Hi guys,

I'm curious to know what to expect after a clutch/flywheel replacement. Will the stroke, pedal pressure or engagement point change and if so, in what way. Will anything else change after replacing both?

Assume that the original part is worn to the rivets, but is not slipping. Thanks!

Corte Loco

My experince with 964 tranny was bad when I replaced the factory double mass flywheel with single; the idle make me crazy on red lights. Always drop to stop the engine. Not sure if that happend with the 993tt cars, but the best part is how fast the car respond with it.

Jean

I have an RS clutch/ GT2 light flywheel assembly in my 964T (993TT gearbox and tranny) and it is perfect, the pedal pressure is great, it runs and idles perfectly, gear engagement great, a great mod.
Corte, I believe in N/A cars, some were experiencing the problems you mentioned, but could be fixed with a good tune up.

fc-racer

What about any changes with just direct replacement of DMFW and clutch? I read that you will feel the engagement point is much lower on the new parts, what about the pedal pressure, etc?

nel

The greater force required to disengage the clutch against the new clutch spring plate can then show up the shortcomings of the hydraulic system. I say this because I had to replace the master cylinder a few days after having the clutch & FW done!

However, as the hydraulic circuit is assisted on 993tt with pressure from the main hydraulic system, I can't say that I noticed any difference in pedal travel/required pressure to disengage, etc.

Best of luck.

viperbob

The pedal engagement with the new clutch should be a little different. If your old one was to the rivets as you described, then the new clutch should engage sooner or closet to the floor as there is more material there now.

As far as pedal pressure, it should be the same. When I install really high force pressure plates into our cars, the extra force is not even noticed due to the power assist. If your range of motion has changed, or the force on the pedal has increased then you may have another issue with the hydraulics, master or slave potentially (even the accumulator on the slave as I have seen fail in the past).

I would take it back and see if the shop that installed it can diagnose it.... Good luck and thanks for the kind words in your email

mkhn

Whats the performance difference between a DMF and a SMF? In otherwords, is the only way to get the benefits of a lightened FW by going with an SMF? What about a lighter DMF?

viperbob

They do not make a lighter DMF... The LWF is a SMF (darn, too many TLAs here). The performance comes from about a 14 lb reduction of rotating mass on the flywheel...

nman413

Mike, it's a very nice upgrade. I have it in my car and it makes quite a difference.

porkapig

rs flywheel and lsd combo - does it make a rattle noise at idle?

nman413

No. It can rattle a little if you are lugging the engine but it doesnt bug me at all.

KRA993tt

I think Andial has something in between the LWF and DM don't they?

viperbob

They have a mid weight flywheel. Kind of a waste if you ask me... 3x the cost, and less performance. Also, since these are kind of rare I do not know but would think they still would have issues related to gear rattle.. This is a function of loosing the rubber isolation from the DMF and not from loosing weight....

KRA993tt

That's what I thought, but I wasn't sure if fc-racer wanted an alternative to the LWF set-up. Bob thanks for the clarity.