Boxster S Clutch - what stage?

[BYprodriver]

The stock Sach clutch is all you want. The only upgrade is to have it & a new dual mass flywheel balanced.

[maytag]

Originally Posted by BYprodriver

The stock Sach clutch is all you want. The only upgrade is to have it & a new dual mass flywheel balanced.

Or the smart upgrade; the aasco lw flywheel and Sachs clutch.

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[BYprodriver]

Originally Posted by maytag

Or the smart upgrade; the aasco lw flywheel and Sachs clutch.

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Yeah these engines are so robust why would it need any Harmonic dampening??

[maytag]

Originally Posted by BYprodriver

Yeah these engines are so robust why would it need any Harmonic dampening??

Let's make sure we're talking about the same thing here, before we disagree about it.

The correct word for reducing the amplitude in waves (sound, or harmonic) is "damping" or "to damp."
The word "dampen" or "dampening" means to make damp or moist, and is concerned with liquid, not sound or harmonics.

So: if you're rolling your eyes because you think these motors aren't already wet enough, and they need a dual-mass clutch to make them wetter..... well....

BUT: if you meant to say that the motor needs the dual mass flywheel for it's damping effects.... I'd argue that on its merit... all day and twice on Sunday.

A dual-mass flywheel is an incredibly ineffective way to provide harmonic damping for a motor. It does NOT act the same as a harmonic balancer (very common). IF this motor required harmonic damping, don't you think Porsche would've designed some way of providing such? (And they PROBABLY would've used one of the existing, engineered, effective measures?)

[JFP in PA]

Originally Posted by maytag

A dual-mass flywheel is an incredibly ineffective way to provide harmonic damping for a motor. It does NOT act the same as a harmonic balancer (very common).

Yup, it is so ineffective that several manufacture's have been using it for years......

[maytag]

Originally Posted by JFP in PA

Yup, it is so ineffective that several manufacture's have been using it for years......

I didn't say it's ineffective... I said it's a relatively ineffective way to provide harmonic damping / balancing. Which is true. Unless you always have the clutch disengaged.

It is effective at several other things, which, I believe, are the reasons Porsche (and several other manufacturers) have been and continue to use them. I do not believe that the harmonic damping is the driving cause for the use of a dual-mass flywheel for any of the manufacturers or road-going automobiles.

[JFP in PA]

Originally Posted by maytag

I didn't say it's ineffective... I said it's a relatively ineffective way to provide harmonic damping / balancing. Which is true. Unless you always have the clutch disengaged.

It is effective at several other things, which, I believe, are the reasons Porsche (and several other manufacturers) have been and continue to use them. I do not believe that the harmonic damping is the driving cause for the use of a dual-mass flywheel for any of the manufacturers or road-going automobiles.

Well, according to Sachs and LUK, two of the largest manufacturers of them, that is exactly why they are used. Google it...…….……

The primary reason Porsche when with it in the 986 is that the M96 engine is also used in the 996, which has a crossmember directly in the way of the front of the engine, requiring as thin a front pulley as possible, thereby precluding a thicker coventional harmonic dampener:

[BYprodriver]

Originally Posted by maytag

Let's make sure we're talking about the same thing here, before we disagree about it.

The correct word for reducing the amplitude in waves (sound, or harmonic) is "damping" or "to damp."
The word "dampen" or "dampening" means to make damp or moist, and is concerned with liquid, not sound or harmonics.

So: if you're rolling your eyes because you think these motors aren't already wet enough, and they need a dual-mass clutch to make them wetter..... well....

BUT: if you meant to say that the motor needs the dual mass flywheel for it's damping effects.... I'd argue that on its merit... all day and twice on Sunday.

A dual-mass flywheel is an incredibly ineffective way to provide harmonic damping for a motor. It does NOT act the same as a harmonic balancer (very common). IF this motor required harmonic damping, don't you think Porsche would've designed some way of providing such? (And they PROBABLY would've used one of the existing, engineered, effective measures?)

Don't be that's not why I am rolling my eyes Drama Queen!

[maytag]

Originally Posted by BYprodriver

Don't be that's not why I am rolling my eyes Drama Queen!

10-4. Can't always read between the lines correctly in a format like this, Haha.

Cheers!

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[BYprodriver]

Originally Posted by maytag

Or the smart upgrade; the aasco lw flywheel and Sachs clutch.

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I don't believe the O.P. was looking to spend more money than necessary, or make the clutch more difficult to operate.

[tonythetiger]

Originally Posted by BYprodriver

The stock Sach clutch is all you want. The only upgrade is to have it & a new dual mass flywheel balanced.

OK, how do you balance them; is a this a common request at an indy shop? Im wrenching everything myself, but could hoist the parts up to the Lambo shop in my area. I have the clutch, pressure plate and flywheel...all of them?

[maytag]

Originally Posted by tonythetiger

OK, how do you balance them; is a this a common request at an indy shop? Im wrenching everything myself, but could hoist the parts up to the Lambo shop in my area. I have the clutch, pressure plate and flywheel...all of them?

You'll want the pressure plate and flywheel, and the bolts that attach. They'll balance it as an assembly, and then index it for you. Be sure to install it properly indexed.

And, when they tell you "I can't balance a dual-mass flywheel", you can come back to this thread and explain that to the nay-sayers.

[BYprodriver]

Originally Posted by maytag

You'll want the pressure plate and flywheel, and the bolts that attach. They'll balance it as an assembly, and then index it for you. Be sure to install it properly indexed.

And, when they tell you "I can't balance a dual-mass flywheel", you can come back to this thread and explain that to the nay-sayers.

The 2 piece flywheel must be pinned together to prevent movement while spinning on the balancer.

[DanD04]

Golly - you guys are way over my head!! I was just going to go with Stock Porsche, but saw options from Stage 1 - Stage 4. Not knowing for sure what stock was or if there was a better "daily driver" option is what I was trying to get some sound feedback on. Love the conversation though.

[maytag]

Originally Posted by DanD04

Golly - you guys are way over my head!! I was just going to go with Stock Porsche, but saw options from Stage 1 - Stage 4. Not knowing for sure what stock was or if there was a better "daily driver" option is what I was trying to get some sound feedback on. Love the conversation though.

Guess BYprovider was right on the ticket then.

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[BYprodriver]

[QUOTE=tonythetiger;597112]OK, how do you balance them; is a this a common request at an indy shop? Im wrenching everything myself, but could hoist the parts up to the Lambo shop in my area. I have the clutch, pressure plate and flywheel...all of them?[/QUOTE

It takes specialized equipment to properly balance & it's better & easier with a crankshaft.


I use Revco in Long Beach CA