How much TQ can our clutches handle?

franko9217 · 09-14-2015, 03:14 PM

Down pipe and a tune from GSR. When i shift hard from 1st to 2nd i'm not sure if i'm spinning a bit, traction control kicking in or if i'm slipping... i ALWAYS drive in sport +

I'm pretty sure my TQ is over 400 at the wheels....

Thanks in advance.

epistax · 09-14-2015, 07:39 PM

Quote:

Originally Posted by franko9217

Down pipe and a tune from GSR. When i shift hard from 1st to 2nd i'm not sure if i'm spinning a bit, traction control kicking in or if i'm slipping... i ALWAYS drive in sport +

I'm pretty sure my TQ is over 400 at the wheels....

Thanks in advance.

I can't wait for the pictures / answer!

ckrieg · 09-15-2015, 02:25 AM

Try doing it uphill, and in SPORT, and not S+.
If your revs go up faster than you think you should be moving, it's your clutch.

Nickon · 09-16-2015, 03:40 PM

what are you running that you think youre at 400+ wtq? just out of curiosity.

G30 B58 · 09-16-2015, 07:46 PM

Quote:

Originally Posted by Nickon

what are you running that you think youre at 400+ wtq? just out of curiosity.

He said he's running a GSR flash tune and a downpipe.

If that downpipe is catless, he's at 400 or damn close.

kenny714hb · 09-17-2015, 04:48 PM

Glad you created this, I was also worried my clutch holding up. Im going the jb4 dp e85 route

Eat.Sleep.Race · 09-23-2015, 07:48 AM

still curious.

eric@helix · 09-23-2015, 08:34 AM

I doubt that it's your clutch that's slipping with that torque. If it were, you'd smell burning clutch (an acrid, electric fire-like smell) which would stick with the car for a while.

franko9217 · 09-23-2015, 12:33 PM

Quote:

Originally Posted by eric@helix

I doubt that it's your clutch that's slipping with that torque. If it were, you'd smell burning clutch (an acrid, electric fire-like smell) which would stick with the car for a while.

Good to know, thanks....

harkes · 09-23-2015, 11:56 PM

+1
Clutch smell is horrible so you would notice. No unusual smells - all is good.

Bmw doubles · 09-24-2015, 09:17 AM

Careful on the clutch. I have the GSR tune on my manual. We dyno'd 417wtq on the stage 1. I burned through my clutch in about 2 months. On the new one I did the clutch CDV mod and I make sure the clutch is fully engaged before hammering it. Be easy coming out of 1st to 2nd even if you're racing someone because 3rd gear has long legs and heap of power has been tune for that 3-6. Also , don't downshift if don't have too. Cheaper to replace the brakes then the clutch. If you do want to downshift to get the rpms up make sure you do good rev matching.

Crashnbrn5 · 09-24-2015, 01:32 PM

Quote:

Originally Posted by Bmw doubles

Careful on the clutch. I have the GSR tune on my manual. We dyno'd 417wtq on the stage 1. I burned through my clutch in about 2 months. On the new one I did the clutch CDV mod and I make sure the clutch is fully engaged before hammering it. Be easy coming out of 1st to 2nd even if you're racing someone because 3rd gear has long legs and heap of power has been tune for that 3-6. Also , don't downshift if don't have too. Cheaper to replace the brakes then the clutch. If you do want to downshift to get the rpms up make sure you do good rev matching.

THis....

betlion · 09-25-2015, 10:56 AM

i have jb4,er dp,afe intake and exhaust and only putting out 370 the whp

Bmw doubles · 09-25-2015, 11:41 AM

Quote:

Originally Posted by betlion

i have jb4,er dp,afe intake and exhaust and only putting out 370 the whp

Damn 370whp on the n55 on stock turbo?

Timdelacerna123 · 09-28-2015, 01:00 AM

I'm actually about to order a stage 2+ clutch kit from SPEC CLUTCHES. You should too! my clutch is slipping shifting from 2nd to 3rd and shifting from 3rd to 4th. And I dyno'ed my car in a dynojet at 402whp and 478wtq ftlbs.

2msport · 10-17-2015, 04:18 PM

Quote:

Originally Posted by Bmw doubles

Careful on the clutch. I have the GSR tune on my manual. We dyno'd 417wtq on the stage 1. I burned through my clutch in about 2 months. On the new one I did the clutch CDV mod and I make sure the clutch is fully engaged before hammering it. Be easy coming out of 1st to 2nd even if you're racing someone because 3rd gear has long legs and heap of power has been tune for that 3-6. Also , don't downshift if don't have too. Cheaper to replace the brakes then the clutch. If you do want to downshift to get the rpms up make sure you do good rev matching.

Great info. I've been curious about this lately because there have been times something did seem to be slipping. I'm not sure if its in my head. I think the CDV is a real bitch and hurts quick shifting so I wasn't sure if it was that or the clutch or tires. 228 GSR stage 1. I'm putting out about 330wtq. Have you ever looked in the BC menu for codes related to this? (secret menu)

Bmw doubles · 10-17-2015, 07:15 PM

Quote:

Originally Posted by 2msport

Quote:

Originally Posted by Bmw doubles

Careful on the clutch. I have the GSR tune on my manual. We dyno'd 417wtq on the stage 1. I burned through my clutch in about 2 months. On the new one I did the clutch CDV mod and I make sure the clutch is fully engaged before hammering it. Be easy coming out of 1st to 2nd even if you're racing someone because 3rd gear has long legs and heap of power has been tune for that 3-6. Also , don't downshift if don't have too. Cheaper to replace the brakes then the clutch. If you do want to downshift to get the rpms up make sure you do good rev matching.

Great info. I've been curious about this lately because there have been times something did seem to be slipping. I'm not sure if its in my head. I think the CDV is a real bitch and hurts quick shifting so I wasn't sure if it was that or the clutch or tires. 228 GSR stage 1. I'm putting out about 330wtq. Have you ever looked in the BC menu for codes related to this? (secret menu)

The CDV stock definitely makes the slipping feel and it actually might be causing additional slipping. Just be smart about how you engage the clutch. You can forego the CDV mod and just delete it. Be sure to have the brakes properly bled afterwards. Even if you only loose a little brake fluid you can introduce an air bubble and your clutch will feel stiff. I have not looked in the secret menu for codes I use third party apps for that. What codes are you thinking may be there? TQ / drivetrain codes?

Bmw doubles · 10-17-2015, 07:22 PM

Quote:

Originally Posted by Timdelacerna123

I'm actually about to order a stage 2+ clutch kit from SPEC CLUTCHES. You should too! my clutch is slipping shifting from 2nd to 3rd and shifting from 3rd to 4th. And I dyno'ed my car in a dynojet at 402whp and 478wtq ftlbs.

Let us know how that goes. I've heard anything outside of the oem clutch it is loud and rattles a lot. I thought about the upgrade too, but some of things I read turned me away. Since I've been very conscious about my clutch and waiting for it to engage it's working great with all the TQ I'm putting down too. I think the bonus for us manual drivers is going to be the DV+ since by the time we shift the boost has dumped and needs to be rebuilt. With the DV+ I'm thinking that the boost will hold even if it takes 1.5 seconds to shift and engage the clutch and 17-18 psi is still on tap.

2msport · 10-17-2015, 11:27 PM

Quote:

Originally Posted by Bmw doubles

The CDV stock definitely makes the slipping feel and it actually might be causing additional slipping. Just be smart about how you engage the clutch. You can forego the CDV mod and just delete it. Be sure to have the brakes properly bled afterwards. Even if you only loose a little brake fluid you can introduce an air bubble and your clutch will feel stiff. I have not looked in the secret menu for codes I use third party apps for that. What codes are you thinking may be there? TQ / drivetrain codes?

Yeah I'm a fan of CDV delete. I did it on my last car and it made a huge difference. Unfortunately to the best of my knowledge, with the newest bmws including mine, it's impossible to delete it as its incorporated deep into the system. If you know otherwise please let me know! Thanks for the tips though.

I was thinking maybe if there was anything related to slippage..

09-14-2015, 03:14 PM	#1
franko9217 Private First Class 31 Rep 118 Posts Drives: '14 Blk 335i/6MT/JB4/DP/CP Join Date: May 2014 Location: San Diego, CA iTrader: (0)	How much TQ can our clutches handle? Down pipe and a tune from GSR. When i shift hard from 1st to 2nd i'm not sure if i'm spinning a bit, traction control kicking in or if i'm slipping... i ALWAYS drive in sport + I'm pretty sure my TQ is over 400 at the wheels.... Thanks in advance.
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09-15-2015, 02:25 AM	#3
ckrieg Private First Class 49 Rep 141 Posts Drives: X3M Comp Join Date: Jan 2014 Location: BC, Canada iTrader: (1)	Try doing it uphill, and in SPORT, and not S+. If your revs go up faster than you think you should be moving, it's your clutch.
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09-16-2015, 03:40 PM	#4
Nickon Private 22 Rep 82 Posts Drives: 2014 435i xdrive Join Date: Oct 2014 Location: Los Angeles iTrader: (0)	what are you running that you think youre at 400+ wtq? just out of curiosity.
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09-17-2015, 04:48 PM	#6
kenny714hb Enlisted Member 7 Rep 43 Posts Drives: F80 M3 6MT Join Date: Jan 2015 Location: Huntington Beach, CA iTrader: (0)	Glad you created this, I was also worried my clutch holding up. Im going the jb4 dp e85 route
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09-23-2015, 07:48 AM	#7
Eat.Sleep.Race Out Boosting... 242 Rep 3,987 Posts Drives: F30 335i M-Sport Join Date: Feb 2014 Location: Northern VA iTrader: (7)	still curious. __________________ Alpine White M-Sport F30
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09-23-2015, 08:34 AM	#8
eric@helix 208 Rep 1,161 Posts Drives: 01 M Coupe, 08 135i, '12 328i Join Date: Jul 2007 Location: Philadelphia iTrader: (0)	I doubt that it's your clutch that's slipping with that torque. If it were, you'd smell burning clutch (an acrid, electric fire-like smell) which would stick with the car for a while.
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09-23-2015, 11:56 PM	#10
harkes Colonel 1078 Rep 2,358 Posts Drives: M135i, E39 M5, NSX and AE86 Join Date: Apr 2014 Location: Xiamen, China iTrader: (0)	+1 Clutch smell is horrible so you would notice. No unusual smells - all is good. __________________ M135i 8AT PWG, MHD, Pure Stage2, WMI via Torqbyte CM5-LT, Custom tuned by PureBoost (A Dane in China)
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09-24-2015, 09:17 AM	#11
Bmw doubles Dream crusher 984 Rep 2,421 Posts Drives: Fast Join Date: Mar 2015 Location: westside iTrader: (0) Garage List 2011 535 [0.00]	Careful on the clutch. I have the GSR tune on my manual. We dyno'd 417wtq on the stage 1. I burned through my clutch in about 2 months. On the new one I did the clutch CDV mod and I make sure the clutch is fully engaged before hammering it. Be easy coming out of 1st to 2nd even if you're racing someone because 3rd gear has long legs and heap of power has been tune for that 3-6. Also , don't downshift if don't have too. Cheaper to replace the brakes then the clutch. If you do want to downshift to get the rpms up make sure you do good rev matching. __________________ 535i MIssion Performance, PS2, Helix HPFP Kit, Wagner FMIC, Spec 3 clutch, Steel SMF, Wolf Racing CP, UUC SSK, GFB dv, SprintBooster, Custom Dynomax Exhaust, M5 Sways, Eibach OE Springs, Koni Sports Adjustable, Custom Short Ram CAI IG: @bmwdoubles
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09-25-2015, 10:56 AM	#13
betlion First Lieutenant 83 Rep 399 Posts Drives: bmw Join Date: Mar 2006 Location: california iTrader: (0)	i have jb4,er dp,afe intake and exhaust and only putting out 370 the whp
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09-28-2015, 01:00 AM	#15
Timdelacerna123 Enlisted Member 20 Rep 47 Posts Drives: 2014 f30 335i eb2 Join Date: Nov 2011 Location: houston, tx iTrader: (0)	I'm actually about to order a stage 2+ clutch kit from SPEC CLUTCHES. You should too! my clutch is slipping shifting from 2nd to 3rd and shifting from 3rd to 4th. And I dyno'ed my car in a dynojet at 402whp and 478wtq ftlbs.
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