993TT lightweight flywheel - Anyone have one?

[aceparts_com]

As above..... Engine and box are on the floor; do I go LWF or not?

[silver993tt]

I've been advised not to have one fitted by more than one source. One of the sources was RUF when I was asking about the Turbo R upgrade

[clubsport]

Wait for DeR to come along, I understand he is happy he took his off!

You do notice some help when revving the car, it just changes the character of the car with the noise at idle and low revs.....more RS than Turbo if that makes sense...you may want that, I fitted one and soon felt it added character to the car.

[sundiver]

Not that they're in any way similar but I went for one on my turbo MX-5 (quicker acceleration than my 993C4S certainly) and I took it out again two weeks later. Normally aspirated cars yes but I'm not sure how much sense they make on turbo cars. I didn't like the feel - I may have got used to it I guess but the additional drivetrain noise was another factor. It just wasn't for me in the end...

[aceparts_com]

hmm, tricky.. I love the performance but I've recently spent two hours eliminating a rattle from an air vent so possibly not for me.

[domster]

Yup, DeR took his off. Was causing drivetrain vibrations. Not recommended.

[granville]

Do it not, ruins the drive.

Stick to the standard clutch and get Andy Fearns @ Weltmeister to tweak it with a GT2 plate (or something.)

You get a miles smoother shift character (like the original car) but a slightly longer lifespan, not that it was too shabby originally.

I think the uprated parts are essential only past a monkey's worth of pony power. (I could have said 500bhp but talking sh1t keeps me going, chin, chin.)


Einkeldorff.

[nel]

I went this route and had the GT2 monoblock flywheel and clutch assembly. The car is a tad more free revving, but it does make that slight coffee grinder noise at low revs. I have no regrets and have not noticed any driveline problems since doing this.

>> Edited by nel on Wednesday 10th May 13:30

[aceparts_com]

Cheers guys for the reply. We pulled the engine out to address a clutch noise, replace the DV's and cats but can't find anything wrong with the anything else! Clutch is original 45K miles, lots of track days and perfect, turbos; no play. Only problem we've found is a couple of jubilee clips need a tighten and a crack in the release bearing, oh, and some of the heat shields need replacing. Too reliable these old air cooled lumps!

Note. Not even replacing the RMS

[fergus]

nel said:

I went this route and had the GT2 monoblock flywheel and clutch assembly. The car is a tad more free revving, but it does make that slight coffee grinder noise at low revs. I have no regrets and have not noticed any driveline problems since doing this. >> Edited by nel on Wednesday 10th May 13:30

I think you may have a problem, as it's normally the plates in the LSD that do that, not the flywheel/clutch interface!!

[silver993tt]

aceparts_com said:

Cheers guys for the reply. We pulled the engine out to address a clutch noise, replace the DV's and cats but can't find anything wrong with the anything else! Clutch is original 45K miles, lots of track days and perfect, turbos; no play. Only problem we've found is a couple of jubilee clips need a tighten and a crack in the release bearing, oh, and some of the heat shields need replacing. Too reliable these old air cooled lumps! Note. Not even replacing the RMS

How long did it take to drop the engine? Was it complicated?

[nel]

fergus said:

nel said: I went this route and had the GT2 monoblock flywheel and clutch assembly. The car is a tad more free revving, but it does make that slight coffee grinder noise at low revs. I have no regrets and have not noticed any driveline problems since doing this. >> Edited by nel on Wednesday 10th May 13:30 I think you may have a problem, as it's normally the plates in the LSD that do that, not the flywheel/clutch interface!!

Apparently it's normal - all who have made this change make the same comment. I suspect that the dual mass flywheel with the shock-absorbing elastomer layer between the two elements of the flywheel filters out this noise on a standard car.

One other side comment - I seem to recall from the rennlist forums that posters commented on ease of stalling the car once they'd made the change to a lightweight flywheel. Again - never been a problem with the GT2 flywheel but then that might not be as light a design as the yanks are using.

[aceparts_com]

[quote=silver993tt
How long did it take to drop the engine? Was it complicated?[/quote]

I'm lucky, my offices are next door to a very friendly and competent garage. We had it dropped in about 3 hours.

[nel]

aceparts_com said:

Clutch is original 45K miles, lots of track days and perfect...

Reassure me - while you're in there you ARE going to replace the clutch aren't you?

[porsche4life]

Let me know when you are back out on the track, be interesting to see how much quicker it is now with the mods..

BTW - after many track days my LSD was shot, if you do have the lump out and you do have some spare cash definetly worth renewing the plates or at least increasing the pre-load for those big drifts...:-)

[aceparts_com]

That's one thing I forgot about; the diff!

I'll investigate new plates for it in the morning - cheers! Thinking about it, didn't you say the angles the car would attain were enough to conclude that the diff is in fine fettle?

BTW, new clutch is on the way )



>> Edited by aceparts_com on Friday 12th May 22:28

[porsche4life]

Well, mine went very quickly, started to pick up inside wheel spin at Donny in 3rd gear through the chicane at end of straight, then deteriorated very quickly, at Bedford could not apply full power on 2nd gear hairpins because would have melted the diff.

Definetly worth a look even if you put them all back... Bet they are scorched though.... considering how much you were asking of that poor little porker.