Single or Dual Mass Flywheel for an LCR?

[Mark300zx]

OK was ringing around today for prices on clutch/flywheel replacement and asked the guy is GSF if they do a SMF for the car. He advised against it saying it will rip the new clutch to shreds as the DMF has a shock absorbing facilty?

Once again I am after the advice of the knowledgeable folk?

 

[wild willy]

OK was ringing around today for prices on clutch/flywheel replacement and asked the guy is GSF if they do a SMF for the car. He advised against it saying it will rip the new clutch to shreds as the DMF has a shock absorbing facilty?

Once again I am after the advice of the knowledgeable folk?

Single mass is fine but can cause vibrations at idle and chatter. Personally i would go with an uprated Sachs clutch fitted to a standard dual mass flywheel. This should retain a stock like feel.

 

[Mark300zx]

Out of interest which sachs clutch and where can you get it, would it be the R32 one?

 

[Gubien]

Out of interest which sachs clutch and where can you get it, would it be the R32 one?

I have SPEC SMF and clutch (575nm) and I would NOT recommend it due to the noise it generates! When the clutch not is pressed down, the car sounds like its broken... LOL...

But... It do hold power... so...

 

[speedinsaxo]

Southbend stage 4 and 19lbs SMF on mine. 100% happy with it. Very stock like feel and little chatter.

 

[lordgibbness]

I would stick to OEM clutch, flywheel etc. as they are very well suited to the LCR even with a stage 2 remap.

 

[Gubien]

My SPEC might be too light... It's 9 lbs and made of aluminum... But I hate the chatter...

 

[speedinsaxo]

I would NOT recommend an OEM clutch for a stage 2 LCR. Mine went after 15k. If you are changing, you should upgrade.

 

[lordgibbness]

Depends how you drive it, but I wouldn't want to change from all that I have read. Booting it from low revs puts a lot of stress on the clutch - but using the gearbox to ensure you're always above 2.5k before putting your foot down it should last a long time.

 

[wild willy]

A decent remap keeping peak torque below 300 ft/lbs should enable plenty of life out of the stock clutch. Top end power is unaffected.
Too many stage 2 maps cause early spool spiking which can kill the clutch with very little gain to be had. A stock clutch should be fine for a well mapped hybrid k04 too.

 

[lordgibbness]

A decent remap keeping peak torque below 300 ft/lbs should enable plenty of life out of the stock clutch. Top end power is unaffected.
Too many stage 2 maps cause early spool spiking which can kill the clutch with very little gain to be had. A stock clutch should be fine for a well mapped hybrid k04 too.

Completely agree with that.

A torque curve that is flat (and doesn't tail off) will provide good top-end power, always be predicatable (more revs will mean more power) and be more driveable (no surging or flat spots, etc.).

And as you all know it is the twisting force that kills the clutch, so keeping the torque to a level similar to the horsepower would be a good idea.

 

[speedinsaxo]

Well Revo stage 2 killed my stock clutch and I am not in the habit of abusing it, neither do I have a spikey torque curve:

I am not sure of the price differences between stock clutch and DMF and uprated clutch and SMF, but it can't be that much.

People that have chatter problems go with too light a flywheel and there have been a few SPEC disaster stories, but you can always choose another manufacturer for the clutch.

For someone who has been there and experienced it, take my advice. Saves in the long run as well if you were thinking of going big turbo or even hybrid really...

 

[lordgibbness]

You pays your money you makes your choice I guess...