Very Upset

sambo60

New Member

Dec 3, 2006

20

0

1

California

Mar 7, 2009

#1

• Mar 7, 2009

• #1

Well 2 months ago I put in a DFX centerforce clutch, my shop said it would be enough to hold my power. a few days ago I was on the freeway and I gun it in 5th and the engine just revs up, so I try it a few more times same thing. My shop suggested an RPS twin disc carbon clutch, which is around $2000, and the worst part is that they can't tune and install my new blower til they get the clutch in. What are my other options for clutches that can hold over 700 rwhp.
Thanks

 

oxfordgt

Member

Apr 30, 2006

288

2

18

Clarksville, TN

Mar 7, 2009

#2

• Mar 7, 2009

• #2

My spec stage 1 clutch is holding my power just fine.

 

N

Nitrous03GT

New Member

Nov 21, 2008

17

0

0

Mar 7, 2009

#3

• Mar 7, 2009

• #3

did you follow the break-in period restrictions? CF clutches are good, but are touchy when it comes to break-in, if you dont follow it exactly how it says they will go to junk fast.

 

LaserSVT

Got FB banned again for saying nards

Founding Member

Nov 29, 1999

9,389

3,536

233

Mar 7, 2009

#4

• Mar 7, 2009

• #4

I have a DFX on my Cobra and have no slipping issues in any gear at any throttle. Clustch has been in it for 30K+ miles

 

bhuff30

Founding Member

Dec 11, 2001

6,037

35

129

Olathe KS

Mar 7, 2009

#5

• Mar 7, 2009

• #5

Are you certain everything is adjusted properly to completely engage the clutch? It would be worth a check before forking out the money for a different clutch setup.

 

D

darkside03gt

Member

Feb 19, 2007

851

8

18

Sacramento CA

Mar 7, 2009

#6

• Mar 7, 2009

• #6

make sure its adjusted properly first. If it is indeed bad I would get some kind of twin disc

 

BlownStangGT

REPEAT

Founding Member

Jan 22, 2002

3,860

6

58

Lancaster, PA

Mar 7, 2009

#7

• Mar 7, 2009

• #7

Well laying into it in 5th probably isnt the best thing......I have a McLeod Street Twin Disc Clutch which are rated to 800

Mcleod 96-98 Mustang RST 10.5 Street Twin Disc Clutch 10 Spline [6913-03] : Lethal Performance, Performance parts for Ford Mustangs

They are stiff as a mofo though

 

sambo60

New Member

Dec 3, 2006

20

0

1

California

Mar 7, 2009

#8

• Mar 7, 2009

• #8

yeah i broke it in properly, never launched it just mostly 2nd and 3rd gear pulls. I had my shop check everything, and its all adjusted properly. I'm looking for something that is very streetable that can hold the power, and i drove another car with the RPS clutch and it felt close to stock.

 

98COBRA281

10 Year Member

Nov 24, 2007

1,348

30

59

Port St. Lucie, Florida

Mar 7, 2009

#9

• Mar 7, 2009

• #9

how much power are you making?

 

sambo60

New Member

Dec 3, 2006

20

0

1

California

Mar 7, 2009

#10

• Mar 7, 2009

• #10

98COBRA281 said:

how much power are you making?

Click to expand...

right under 600 at the wheels. but im putting a new blower on so i need a clutch capable of over 700 rwhp.

 

joshjwc9

Active Member

Jun 12, 2006

1,095

17

39

Palm Harbor, FL

Mar 7, 2009

#11

• Mar 7, 2009

• #11

Spec Sells their Stage 5 which is rated up to like 800 ft lbs or more, the disk is sintered iron and is totally an on/off clutch. I know someone who has a 650rwhp Termi without any problems from the disk, he just keeps putting aftermarket cables in it though....

 

squeak93

15 Year Member

Jun 2, 2005

2,256

358

164

Joplin, Missouri

Mar 9, 2009

#12

• Mar 9, 2009

• #12

The spec 5 is one nasty mofo. Have a friend with it in a 351 blower car, it snaped the input shaft of a 3550.. It had been holding his power quite well for a while now. He went through every other brand known before that. Best part is there is no break in time for it. Just bolt and hammer down.

 

SaleenGT2001

Well-Known Member

Jul 18, 2005

2,811

4

58

Four Oaks NC

Mar 9, 2009

#13

• Mar 9, 2009

• #13

the spec 5 sucks to drive on the street. my buddy has that in his 900 hp cobra and it squeals and chatters constantly

i really like my spec stage 3+. it feels as smooth as factory and the pedal effort is not too heavy either. it has been holding my car with no problems for almost a year now

 

LaserSVT

Got FB banned again for saying nards

Founding Member

Nov 29, 1999

9,389

3,536

233

Mar 9, 2009

#14

• Mar 9, 2009

• #14

Yeah the spec 5 is obnoxious on the street.

IMHO Centerforce is the best for street usage. Because of the counter weights they have the peddle effort is the same as stock yet the clamping force is so much greater. My 447 rwhp is just fine for my DFX
You could try stepping the size up to 11" and get the right flywheel, that may help. At least modulating the pedal will be easier

Also Centerforce has that dual clutch version for really high HP applications.

 

sambo60

New Member

Dec 3, 2006

20

0

1

California

Mar 9, 2009

#15

• Mar 9, 2009

• #15

Ok thanks guys for all the replies its been very helpful