Trouble shooting P0336 RPM circuit code

[Endurance Racer]

I'm reading that some don't think a lightweight low mass flywheel is a good idea because it leads to crank shaft failures.

[JFP in PA]

Originally Posted by Endurance Racer

I'm reading that some don't think a lightweight low mass flywheel is a good idea because it leads to crank shaft failures.

Next to which oil to use, this is always a contentious subject. Yes, there have been crankshaft failures associated with removing the harmonic dampening of the dual mass flywheel, Porsche released a TSB warning dealers to not warranty such damage if a single mass flywheel was in use.

One of the biggest issues is the lightweight flywheel itself, we have seen some that were several grams out of balance themselves right out of the box. That could be corrected by having whoever does your engine balancing spin it up and correct the imbalance (including the new clutch assembly), but not everyone does that, and ultimately pays the price.

Proceed at your own risk.

[seningen]

Originally Posted by JFP in PA

Next to which oil to use, this is always a contentious subject. Yes, there have been crankshaft failures associated with removing the harmonic dampening of the dual mass flywheel, Porsche released a TSB warning dealers to not warranty such damage if a single mass flywheel was in use.

One of the biggest issues is the lightweight flywheel itself, we have seen some that were several grams out of balance themselves right out of the box. That could be corrected by having whoever does your engine balancing spin it up and correct the imbalance (including the new clutch assembly), but not everyone does that, and ultimately pays the price.

Proceed at your own risk.

It's an endurance race car -- he won't know what killed it when it does die :-)

I have a SPB and a ChampCar with an AASCO.
Also had a Boxster S drive to the track car with an AASCO, about 10k track miles on that setup. Sold it a few years back -- still going strong as best I know.

YMMV,

Mike