Best clutch?
12-28-2008, 02:43 PM
#31
Wax On, Wax Off
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Time for one of those “usual comments”…
If you want some good input you have to be a little more specific on what you want the clutch to do.
I used a ‘cup’ clutch and pressure plate for years at 370rwhp on the track – but that’s because I treat it nicely. If you want to power shift or slip the clutch until boost comes up then you need a lot stronger pressure plate and the different clutch – most of which I find obnoxious for street use.
So – tell us the hp/torque, the real usage and you might get a better result!!
I use Markus Blaszak for his custom clutches, they work quite well – as long as you are honest about the usage!
If you want some good input you have to be a little more specific on what you want the clutch to do.
I used a ‘cup’ clutch and pressure plate for years at 370rwhp on the track – but that’s because I treat it nicely. If you want to power shift or slip the clutch until boost comes up then you need a lot stronger pressure plate and the different clutch – most of which I find obnoxious for street use.
So – tell us the hp/torque, the real usage and you might get a better result!!
I use Markus Blaszak for his custom clutches, they work quite well – as long as you are honest about the usage!
12-28-2008, 05:02 PM
#32
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I also got his clutch and lite stock fly via Chris. The clutch did slip occasionally on the 3L motor when hot. I have it in my 2.5L currently and it works fine and that's with visits to 1.5bar. It's also very domesticated vs a puk clutch. I think for the OP's needs and power levels it sounds strange that he burnt the stock one out? Go with the 930 disc.
12-28-2008, 09:27 PM
#33
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Chris, your post was exactly what I was looking for. I'm making around 320hp at the wheels w/ a Vitesse St 3. I've got a cup clutch + PP ready to put in the car and it's good to hear you're running the same setup with significantly more power. I've always been under the impression it should be fine but this thread has me wondering.....
I don't abuse the clutch ever -- perhaps even to a fault
I don't abuse the clutch ever -- perhaps even to a fault
12-28-2008, 09:49 PM
#34
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12-29-2008, 05:33 AM
#35
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Lightened stock flywheel here as well.
If you go with the Blaszak send him your flywheel and pressure plate bolts (if you go with his disk and PP) and he will balance the rotating assembly for you. I had this done when I was using one of his Kevlar clutches and Fidanza flywheel...that setup unfornuately could not stand the torque in my application.
If you go with the Blaszak send him your flywheel and pressure plate bolts (if you go with his disk and PP) and he will balance the rotating assembly for you. I had this done when I was using one of his Kevlar clutches and Fidanza flywheel...that setup unfornuately could not stand the torque in my application.
12-29-2008, 08:27 AM
#36
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I got the whole setup from Markus and also found the Kevlar clutch to slip when hot, but recover once cooled down. I think it will hold 350whp +/-
12-29-2008, 02:52 PM
#37
930 pressure plate and KEP 6 puck sprung disk, have any others tried this combo? I had a KEP 6 puck in my turbo VW with a stock pressure plate and it handled 300hp. I was told that the higher coefficient of friction of the copper/ ceramic 6 puck allows you to use a PP with less clamping force.
12-29-2008, 03:39 PM
#38
Why can't a Fidanza flywheel be used with a KEP pressure plate?
BTW. I’ve been running a 400 Ft lb track car all of last year with a 930 disc and stock PP with no slippage. We’ll see how much it can take next year when I’m closer to 450-500.
BTW. I’ve been running a 400 Ft lb track car all of last year with a 930 disc and stock PP with no slippage. We’ll see how much it can take next year when I’m closer to 450-500.
12-29-2008, 03:56 PM
#39
The Impaler
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you can, just not with the 930 disk
12-29-2008, 04:34 PM
#40
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That coupled with the Modules of Elasticity rate for Aluminum vs Steel:
Aluminum’s modulus is about 10 million psi.
Steel’s modulus is about 3 times that: 30 million psi.
So, a 2" square Al tube would need to be 3 times as thick to yield the same stiffness as the same 2" square tube in Steel.
Can you imagine a T6 Aluminum flywheel that is 3 times as thick as the OE Steel flywheel.
12-29-2008, 04:41 PM
#41
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This was again the case when I used a Feramic disc, Fidanaza, and modded Sachs PP. It would hold fine when cold but when hot due to slipping when in stop and go traffic the clutch would slip horribly.
12-29-2008, 04:44 PM
#42
Has anyone else had issues with the Fidanza warping?
One of my club racing buddies has a 930/KEP/Fidanza setup. He's been running it for a while at 350HP and hasn't had any issues.
One of my club racing buddies has a 930/KEP/Fidanza setup. He's been running it for a while at 350HP and hasn't had any issues.
12-29-2008, 05:07 PM
#43
Race Car
One other thing to consider is the weight of the vehicles. A race weight vehicle will need far less clutch/PP than a full street weight car.
12-29-2008, 09:37 PM
#44
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+1 on the KEP I with Feramic disc. After 20,000 miles it is working great and holds on the track as well as being easily driveable on the street and handles the abuse of 1/4 mile runs. Claimed to hold 600+ ft-lbs.
12-29-2008, 10:49 PM
#45
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Ok. so I just looked up the cost of the KEP pressure plate and damn near had a stroke. is there a cheaper option that'll work for me? Sachs cup clutch w/ 930 disc?