997 RS flywheel noise
997 RS flywheel noise
Author
Discussion

343bhp

Original Poster:

381 posts

279 months

Wednesday 17th October 2007
quotequote all
Just got the RS and compared to the GT3 it is really chattery, noisy at idle and around town W/without sport button pressed. Spoke to dealer and said it is normal. Anyone experienced the same ?

AL001

831 posts

299 months

Wednesday 17th October 2007
quotequote all
Normal with single mass flywheel, nothing to worry about.

timmo

1,788 posts

263 months

Wednesday 17th October 2007
quotequote all
The 996 GT3 RS is also noisy

put your foot on the clutch and the noise goes away


its to keep the weight down and the makes the engine more responsive
( In lay mans terms )

martin thomas

1,079 posts

260 months

Wednesday 17th October 2007
quotequote all
mines the same. Tis a wonderful noise just like a ducati 999s on tickover. push the clutch in and it goes away.

AdamT

2,825 posts

281 months

Wednesday 17th October 2007
quotequote all
Yep love it smile

Geneve

4,018 posts

248 months

Wednesday 17th October 2007
quotequote all
Normal.

IMO the 'chatter' is the most noticeable difference between the 996/997GT3 and the 996/997GT3RS.

Some people don't mind it, others find it annoying.

It's an inevitable symptom of having less mass in the flywheel.

Edited by Geneve on Wednesday 17th October 12:57

ScottL

814 posts

259 months

Wednesday 17th October 2007
quotequote all
343bhp said:
Just got the RS...
Spec...pics please. shout

Dr S

5,141 posts

255 months

Wednesday 17th October 2007
quotequote all
343bhp said:
Just got the RS and compared to the GT3 it is really chattery, noisy at idle and around town W/without sport button pressed. Spoke to dealer and said it is normal. Anyone experienced the same ?
If you don't like it I take it off you. Would offer my C2S which does not chatter at all in response...wink

Porsche Tech

102 posts

230 months

Saturday 20th October 2007
quotequote all
A duel mass flywheel absorbs crank shaft torsional vibration so it doesn't damage the gearbox bearings, you don't have a duel mass therefore your gearbox rattles so you have a nice revvy engine

Silver993tt

9,064 posts

268 months

Saturday 20th October 2007
quotequote all
Porsche Tech said:
A duel mass flywheel absorbs crank shaft torsional vibration so it doesn't damage the gearbox bearings, you don't have a duel mass therefore your gearbox rattles so you have a nice revvy engine
so in that case, what you're saying is that a single mass flywheel (or lwf) will damage the gearbox bearings?

Porsche Tech

102 posts

230 months

Tuesday 23rd October 2007
quotequote all
duel mass just makes for a smoother car rather than a harse race car, what ever way you look at it the duel mass flywheel absorbs torsional vibration from the crankshaft so the gearbox doesn't chatter, maybe i worded it wrong, porsche would not fit it if it would do harm i guess. it also aids smooth clutch uptake with a 15 degree spin on the duel mass, noisey when at fault