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Hard to say what to go for... the spec 3 seems popular but there are some negative experiences to be found on here too.
Personally i would say you'll have to upgrade - i know Chris M on the forum had a 370hp 3B and he had some clutch slip on the standard after a while. It may hold it, but probably not for long!
I had a clutchnet jobbie on mine that feels very much like stock in all aspects yet holds 400+ hp.
Southbend clutch. For up to 600hp I'd go with the southbend Stage 4 organic feramic. They use the sachs racing pressure plate as a base for its excellent clamping force combined with a disc of their own design. I can set you up with whatever you need, PM me for details.
Marc Swanson
Proprietor, EFI Express
95.5 //S6 Avant
90' Coupe Quattro V8 4.2L twin turbo
93' //S4
83' UrQ
97' F250 7.3 diesel
RS2 has the same clutch setups as the ABY (AFAIK) And the Rs2 puts out ~370-380 with a good tuning chip, not sure how much the stock 3b clutch is rated for but a stock ABY is good enough for that kind of powerlevels..
2004 9-5 aero
2009 Subaru Legacy Diesel
1994 Toyota Supra Eurospec 6-spd LHD
3-4 Audis in parts
Sachs is the way to go, the uprated sachs clutch for 3b wheel is a beauty. I used it in my avant and I've supplied a few of these clutches to various ppl, everyone is very happy with it, Jamos is getting his in a few days.
2004 9-5 aero
2009 Subaru Legacy Diesel
1994 Toyota Supra Eurospec 6-spd LHD
3-4 Audis in parts
I have a ABY/ADU OEM Sachs clutch and DM flywheel in my car. It holds up tot ~500Nm and gives my Avant 368 HP at the wheels in 4th and higher gears. In 1st and 2nd gear I can "smoke" the clutch a bit, as it starts to smell
What torque are we talking?
I use a spec st3+ together with a 3b flywheel at a aby-engine, works fine! Its happy for about ~800nm.
For high torque on a dm flywheel you can weld the flywheel discs together and use a sachs upgraded clutch with a original organic lamel, will work proper for ~600 nm.
I don't like the spec clutches. Never heard of ppl welding the flywheel together
The 707 is specd for 577nm + 30% with sinter, but I know several ppl using that clutch with 700+ hp (and similar if not more tq) and no issues, Hells racing and Andreas silver s2 for instance (I supplied the sinterdisc to Andreas)
2004 9-5 aero
2009 Subaru Legacy Diesel
1994 Toyota Supra Eurospec 6-spd LHD
3-4 Audis in parts
I don't like the spec clutches. Never heard of ppl welding the flywheel together
The 707 is specd for 577nm + 30% with sinter, but I know several ppl using that clutch with 700+ hp (and similar if not more tq) and no issues, Hells racing and Andreas silver s2 for instance (I supplied the sinterdisc to Andreas)
Det är för att det inte ska spricka isär ju!
Sounds strange that the spec3+ wont handle the torque of a gt3076.
Bad mounting, oil/grease on the flywheel/lamell from a broken crankshaft rear gasket?
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