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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > NEW HPF BMW 135i/335i Stage 1 FERAMIC (750rwhp) Clutch - TEST DRIVE VIDEO



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      01-03-2012, 05:55 PM   #89
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      01-09-2012, 01:21 PM   #90
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Another review from a customer.

Quote:
Originally Posted by dzenno View Post
1000km done, 80/20 mix of city/hwy driving...i have to say i'm truly happy with this clutch...there's no noise, zero chatter with the OEM DMF and take offs have smoothed out mostly due to my own adjustment of clutch/gas pedal work but also due to the clutch disk being bedded in now...haven't done any high boost (20psi) pulls just yet but have gone to 17psi and the clutch just works as it should, no drama, just the way it should!

I'll update again once I'm through about 10,000km but so far nothing but a 10/10...we'll see how it holds up at the strip when/if I make it out there this summer as plan is to hit the road coarse a bit for a change...

Thanks HPF
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      01-09-2012, 02:13 PM   #91
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Where would I check to see about getting my DMF resurfaced? I have about 10,000 on a new DMF and 6 puck clutch.... the engagement is terrible, I'm not having any issues with it except that I hate to drive it.

I have AWD and they recommended a pucked clutch...
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      01-09-2012, 02:38 PM   #92
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Quote:
Originally Posted by Railgun View Post
Ok...the motor makes what the motor makes. Irrespective of what you put behind it. You don't "lose" torque for putting a light flywheel on in the same way that you don't "gain" HP for doing the same. While you are correct in that the inertia of the FW will affect the performance of the motor, not in manner you're describing.

The advantage of a light fly is motor responsiveness. You'll see it rev quicker as it doesn't have as much mass to fling around. Less rotational mass is good. However, it will also drop revs quicker, which could result in some sloppy shifting until you get used to it as you may find your motor dropping below the point in which it should engage the next gear. Depending on your application (in how you intend to use the car) this may be a good option for you. Road racing for example.

A heavier flywheel will keep those revs up higher, longer than a lighter variant. Where it will take a bit longer to get to that point, the motor will have more motivation to stay at those higher RPMs. This is good for larger vehicles that have a lot of mass to move around. Towing and other heavy duty applications would suffice.

How this applies to the clutch you're using...a heavier FW with a really grabby clutch should seem smoother, again because of the inertia it needs to overcome. The same clutch with a really light FW could be jerky.

In my application (in another car) I have a pretty light FW (9#) with a dual carbon, sprung hub clutch. Very grabby, yes, but I've grown accustomed to it so I can engage it smoothly enough without too much fuss. This is on a rotary, which is very rev happy to begin with.

To say that a heavier FW "gives" you more torque is innacurate. The only way to do that is at the motor itself.



Hope that helps a bit more.
I used to have a LWFW on my G35 and this is spot on
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      01-09-2012, 04:22 PM   #93
HPF Chris
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Quote:
Originally Posted by runthis View Post
Where would I check to see about getting my DMF resurfaced? I have about 10,000 on a new DMF and 6 puck clutch.... the engagement is terrible, I'm not having any issues with it except that I hate to drive it.

I have AWD and they recommended a pucked clutch...
Single disk puck style clutches have less surface area in contact with the pressure plate and flywheel. This makes the engagement much more on-off ish. Our single disk full face feramic clutch not only engages like butter but it holds all the power. Very crisp engagements so you know it's in gear but you can still drive it in reverse up a hill and not get the chatter you would with a puck style clutch.

Chris.
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      01-11-2012, 12:52 PM   #94
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Do you guys resurface Fly wheels?
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      01-11-2012, 01:28 PM   #95
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Quote:
Originally Posted by runthis View Post
Do you guys resurface Fly wheels?
To get your 135i/335i flywheels resurfaced for $75 + shipping call South Bend Clutch at (574) 256-5064 and ask for Greg or John. Tell them Chris from HPF sent you. Ask them for an RMA for your OEM flywheel so they will know what it is when they get it.

Chris.
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      01-11-2012, 01:40 PM   #96
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Chris -

Do you beef-up the torque straps on the pressure plates?

If so, how?

Thanks.

Neil
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      01-12-2012, 01:33 PM   #97
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Quote:
Originally Posted by MDORPHN View Post
Chris -

Do you beef-up the torque straps on the pressure plates?

If so, how?

Thanks.

Neil
We use the SRE Pressure Plate which has stronger straps than the stock pressure plate.

Chris.
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      09-16-2012, 05:05 PM   #98
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Quote:
Originally Posted by HPF Chris View Post
We use the SRE Pressure Plate which has stronger straps than the stock pressure plate.

Chris.
You mean you are using Sachs Race Engineering pressure plates with custom feramic discs ? Is this on all the HPF stages or only Stage 1 ?
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      09-22-2012, 06:20 PM   #99
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http://www.horsepowerfreaks.com/part..._Feramic/18375
"Stage 1 - Power Handling Capability: 600 rwhp, 550 ft-lbs"
"Stage 2 - Power Handling Capability: 700 rwhp, 625 ft-lbs"
you said in the thread that stage 1 can handle 750rwhp/600ft-lbs was that a mistake or is the information on your website faulty or what?
I was going to order the stage 2 because I'm eventually looking to make about 700hp to the wheels with an upgraded turbo set up in the future but if you say stage 1 is good to 700rwhp then i dont need stage 2 right?
which information should i follow?
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      09-24-2012, 03:28 AM   #100
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Quote:
Originally Posted by kkashanchi View Post
http://www.horsepowerfreaks.com/part..._Feramic/18375
"Stage 1 - Power Handling Capability: 600 rwhp, 550 ft-lbs"
"Stage 2 - Power Handling Capability: 700 rwhp, 625 ft-lbs"
you said in the thread that stage 1 can handle 750rwhp/600ft-lbs was that a mistake or is the information on your website faulty or what?
I was going to order the stage 2 because I'm eventually looking to make about 700hp to the wheels with an upgraded turbo set up in the future but if you say stage 1 is good to 700rwhp then i dont need stage 2 right?
which information should i follow?
Thanks for the feedback. Stage 2 can hold 750rwhp/600 ft lbs. I updated our site to reflect that. If you're going to be making 700rwhp at some point get the stage 2, not the stage 1.

Chris.
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      09-24-2012, 04:41 AM   #101
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I've been looking at different kinds of clutches, and I want something that can handle higher torques in the future (in the 400 wheel torque range right now), and feel as close to stock as possible, even though I know a stronger clutch is going to have to feel different to some extent. I just want to minimize that extent. It seems to me that this HPF clutch is the way to go.
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      09-25-2012, 08:28 PM   #102
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Quote:
Originally Posted by Ferruccio View Post
I've been looking at different kinds of clutches, and I want something that can handle higher torques in the future (in the 400 wheel torque range right now), and feel as close to stock as possible, even though I know a stronger clutch is going to have to feel different to some extent. I just want to minimize that extent. It seems to me that this HPF clutch is the way to go.
The HPF clutch feels very close to stock and it holds all the power...



And installation can be done with the addition of a few tools.



Chris.
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      10-09-2012, 08:43 PM   #103
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The website shows that the feramic clutch will not work on the 335xi. Is that true?
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      10-10-2012, 08:27 PM   #104
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Quote:
Originally Posted by Chrissummit View Post
The website shows that the feramic clutch will not work on the 335xi. Is that true?
Yes. It is true. Sorry.

Chris.
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