Strength of b5 dual mass flywheel?

[dana]

I have been rolling this question around in my head, and hoping for some insight.
I am still trying to nail down a clutch for my tdi 90q. Currently my options for flywheel and clutch combos are
-2.0 fwd 80 flywheel with 228mm spec stage 2+ clutch
-2.0 fwd 80 flywheel machined for 7a clutch with some sort of 7a style 240mm clutch
-b5 1.8t dual mass flywheel with spec stage 2+ or southbend clutch

I am leaning towards the dual mass since I have one, and I am thinking the dual mass might help damp out some of the diesel vibes.

The question is....how much torque can those hold? Someday i might want to do a bigger turbo and be able to make some halfway decent torque. Would I be asking for trouble?

I always here people bitching about dual mass flywheels, but have never actually witnessed them failing.

[lorge1989]

I have some first hand expierience with a some high hp B5/b6 cars with a dual mass. GT3071 on a 1.8T was the biggest I've seen and the flywheel never missed a beat. We have a hunch that the dual mass might have contributed to this:

IMGP4595 by lorge1989, on Flickr

But its a far reach, I'm sure you will be fine. Especially because you won't be spinning nearly as fast.

[dana]

yea, i wont be anywhere near 3071 hp, and certainly not revving high at all. I might make 300+ ft/lbs someday though. I think i am going with dual mass. I hate vibrating drivelines. My truck has as single mass and in first and second it rattles the gears sooo bad.

[my2000apb]

do you still want that article to make a b3 80 fwd 3a flywheel work with a 240mm clutch?

[dana]

if you have it tim and its not too much trouble, i am interested to see it.

[scubagli]

That's what they do in stock tdi's.


Old and grumpy.

[my2000apb]

if you have it tim and its not too much trouble, i am interested to see it.

I also have a good stock ALH flywheel if that is of any interest

[samc]

stock aeb dual mass and clutch was hit and miss in my b3 90q 1.8t with 310ftlb, sometimes it would slip through all gears then for a few month be fine.. it never exploded though