My RMS is leaking. Again. Seems to be getting worse. Grrrr.

As long as they're in there fixing it, I'm thinking about upgrading the clutch and going wtih a lightweight flywheel. I'm at 40k miles and still on the stock clutch.

Any suggestions on brands/combos? I'm not so concerned about the chatter, but I don't want to affect the driveability (stalling/excessively heavy clutch, etc..).

Thoughts?

 

Northvan997S and Cattman both have one and the chatter is defiantely heard but they says the car accelerates well!
I am starting to think like you and I may want that light weight flywheel too,but I have heard DO NOT do it with the supecharger....WHY you ask?.....NO idea just what I heard.I think I heard it from Sharkwerks..?!
I cannot see what the charger would have to do with it myself!
Cattman I believe is running the Sachs clutch too and swears he will NOT pull them out....he loves this mod!
Pm them I am sure they will be more than happy to share their findings with you


Stacy

 

What would the supercharger have to do with the lwfw? Does he not recommend it for the 996's in general or just supercharhed 996's? Its hard to get clear info on thid as it doesn't seem to be partuclarily popular in the pcar community. Excuse the typos as I'm typing this on my bb and I can barely see the screen

 

I do believe they said it IS NOT recommended for the supercharged cars...again I do not know why...just giving you the info I heard.May want to get in touch with Sharkwerks as they do sell a light weight flywheel.....


Stacy

 

Judging by the lack of response, I'm guessing this is still a very unpopular mod

 

Try the 997 forum.....like I said Cattman and Northvan997S both have threads about it..!
Even though you are a 996 the results of th LWFW will have the same effect?!

Stacy

 

I researched this quite a bit. GMG makes a combo of clutch and LWFW that they say has no gear noise at idle. The whole package from them is about 2 grand.

As far as the application on SC car goes, I con only imagine it is a torque issue since the SC is driven off the motor and the added drag on spin up might bog down the motor at low RPM. On the other hand, for a car with RMS issues, I can only imagine a LWFW would help since that stock 30 pound flywheel is canter levered a good distance aft of the last crank journal. Lightening that load would ease the crank flexing and help keep the RMS seated.

I would do it. You'll have a bit of a learning curve in getting used to it, but I can't imagine your overall performance would suffer. Obviously, in a turbo application a LWFW would be a tremendous advantage as it would help diminish turbo lag by lowering the reciprocating mass. SC benefits from the added inertia the heavier flywheel causes. It's the opposite with a turbo.

 

Andrew, this time get the wrightwood 996 racing rear main seal! Protosport swears by that seal and that's what I have on my car. No leaks!

For the lfw, i've heard similar things to Stacey, since we lack torque, lfw is not the best upgrade for us. Our cars may actually be slower with it installed lol

 

I have a hard time believing that. Many 996 owners have installed LWFW with success, and they have significantly less tq than we do with the SC'd cars. If it's better in a NA car, how could it be worse in our car??? Then again, I'm the furthest thing from a mechanic so I don't know what the hell I'm talking about

 

I did the Aasco LWFW and SPEC stage 2+ (spring centered hub) clutch on my car a few months ago. I have done every N/A mod in the book to my car and it works fantastic with the other mods. I absolutely love it...much faster acceleration. During normal driving, I rarely hear it. It is only loud when the car is idling in neutral (with the A/C on). I have gotten used to the sound and kind of like it...it makes my humble car sound a little like a GT3RS. I agonized over doing this mod and researched every thread & article on it for over a year. I highly recommend it. I plan on eventually doing the Vortech S/C on my car and purchased the SPEC clutch, with the additional power in mind. My wife has no problems driving the car. It did not impact driveability.

 

I plan to do this mod when my clutch goes. My only concern is the chatter at idle.
Dep Dog - if you do it, let us know what brand you go with.

 

My installer is recommending the Spec stage 2 plus package combined with the Spec LWFW. I hear good things about their products and the pricing is reasonable. I think I'm going to go for it. I talked to Todd at EVO and he said the LWFW will work fine with the supercharger.

Jason: Where do you get that Wrightwood seal from? I've never heard of it.

 

Curious to see the results and hear about the acceleration improvement!
I would trust what Todd has to say...he knows alot about the supercharged cars I am sure!
However,I have been told to use the Aasco LWFW.......
GL,

Keep us posted!

Stacy

 

I'm sure you've done your research but make sure you use a clutch assy that utilizes a sprung hub. You can run a solid hub unit but you'll get a lot of gear box backlash noise on acell/decel (not just chatter at idle) and potentially, over time, more excessive ring/pinion wear over a sprung hub or dual-mass set up.

 

The LWFW will work fine on a 996 with an SC. However, a LWFW may also cause a blancing problem for the crankshaft, which is a risk on all engines that come with a DMF. Whether this risk materializes into damage to the engine has yet to be determined. Personally, if I am going to drive a car on the street that rattles, I might as well drive a 55 Chevy which is expected to have rattles.