Hydraulic Clutch

Jim Davis · 04-23-2007, 10:35 AM

Can anyone tell me if a in the bell housing hydraulic throw out bearing is legal in S/S? Also is anyone actually running a hydraulic system now and if so whose bearing are you useing?

Jim Davis
SS/I 2448

Ed Carpenter · 04-23-2007, 11:38 AM

I know it's legal in IHRA not sure about NHRA. I ran it in my 66 Chevy II at the IHRA pro-am in san antonio last month. Mine is a McLeod setup. Ive since changed back to a mechanical setup personal preference. I have everything you need if interested. My parts have 5 runs on them.

Ed Carpenter

66 Chevy II

4244 SS/H

Jim Davis · 04-23-2007, 11:47 AM

Hi Ed,
Please call me 407-889-5810 or email me @ jimdavis@quik.com

Jim Davis
SS/I 2448

Jim Davis · 05-03-2007, 10:50 AM

Hi Ed
My request for usage of a hydraulic cluhch/throw out bearing was turned dowy by NHRA with the following rational.

Because it provides an avenue for a potential delay device (or the perception of same) and there is no real need for it in any car that I am aware of. The tech guys are in overload enforcing the existing rules and their interpretations and we do not need to burden them any more. I participated in the decision process w.r.t. your request and support the decision. There is no need to open this can of worms and the various interpretations that could evolve from it.
This answer is from Div. 2 tech. dir. Jim Collins with the concurrence of Len Imrrogno,Jim Skelly & Eric Lowe. I understand it even though I don't like it, so I'm off designing & fabbing mechanical clutch linkage.

Jim Davis
SS/I 2448

LNorton · 05-03-2007, 04:44 PM

What about in a car that came with a hydraulic clutch from the factory?

Lee Norton
Performance Punch Embroidery Digitizing
Slowtime Motorsports
I/PS '02 Firebird 231 V6

Ed Carpenter · 05-03-2007, 04:51 PM

We wouldn't want any advantages for stick guys!!!!

Ed Carpenter

66 Chevy II

4244 SS/H

05-03-2007, 11:53 PM

If the car was OEM with a hydraulic clutch then it's OK....because that's "stock".

NHRA #7494 SS/H
1970 AMC AMX 390
"Best Appearing" @ NHRA '06 Pacific Sports Nationals
Arizona's BEST Realtor since '93 and I support racers!
Property in AZ or moving here? I can help! Call me @ 602-418-9797 or e-mail JeffLeeAzRealty@Qwest.net

MHoward · 05-08-2007, 11:58 PM

But you can run a hydraulic button to release your trans brake in super stock to delay the reaction.doesnt seem fair.

greg fulk · 05-09-2007, 04:12 AM

wait till they add the delay boxes to SS.....that will be fair! let the man run a hydraulic clutch if he wants! ( B. S. )

novamoation

04-23-2007, 10:35 AM	#1
Jim Davis Junior Member Join Date: May 2005 Location: Apopka,Fl. Posts: 32 Likes: 0 Liked 0 Times in 0 Posts	Hydraulic Clutch Can anyone tell me if a in the bell housing hydraulic throw out bearing is legal in S/S? Also is anyone actually running a hydraulic system now and if so whose bearing are you useing? Jim Davis SS/I 2448 __________________ Jim Davis 2448 SS

04-23-2007, 11:38 AM	#2
Ed Carpenter Live Reporter Join Date: May 2006 Location: Dripping Springs, Tx Posts: 2,698 Likes: 185 Liked 504 Times in 126 Posts	I know it's legal in IHRA not sure about NHRA. I ran it in my 66 Chevy II at the IHRA pro-am in san antonio last month. Mine is a McLeod setup. Ive since changed back to a mechanical setup personal preference. I have everything you need if interested. My parts have 5 runs on them. Ed Carpenter 66 Chevy II 4244 SS/H __________________ Ed Carpenter 2005 Chevy Cobalt A/SM Race Engine Development

04-23-2007, 11:47 AM	#3
Jim Davis Junior Member Join Date: May 2005 Location: Apopka,Fl. Posts: 32 Likes: 0 Liked 0 Times in 0 Posts	Hi Ed, Please call me 407-889-5810 or email me @ jimdavis@quik.com Jim Davis SS/I 2448 __________________ Jim Davis 2448 SS

05-03-2007, 10:50 AM	#4
Jim Davis Junior Member Join Date: May 2005 Location: Apopka,Fl. Posts: 32 Likes: 0 Liked 0 Times in 0 Posts	Hi Ed My request for usage of a hydraulic cluhch/throw out bearing was turned dowy by NHRA with the following rational. Because it provides an avenue for a potential delay device (or the perception of same) and there is no real need for it in any car that I am aware of. The tech guys are in overload enforcing the existing rules and their interpretations and we do not need to burden them any more. I participated in the decision process w.r.t. your request and support the decision. There is no need to open this can of worms and the various interpretations that could evolve from it. This answer is from Div. 2 tech. dir. Jim Collins with the concurrence of Len Imrrogno,Jim Skelly & Eric Lowe. I understand it even though I don't like it, so I'm off designing & fabbing mechanical clutch linkage. Jim Davis SS/I 2448 __________________ Jim Davis 2448 SS

05-03-2007, 04:44 PM	#5
LNorton Senior Member Join Date: Apr 2004 Location: RacerTees.com Posts: 505 Likes: 0 Liked 3 Times in 1 Post	What about in a car that came with a hydraulic clutch from the factory? Lee Norton Performance Punch Embroidery Digitizing Slowtime Motorsports I/PS '02 Firebird 231 V6 __________________ Lee Norton - N229 STK IHRA H/FIA - NHRA O/SA RacerTees.com

05-03-2007, 04:51 PM	#6
Ed Carpenter Live Reporter Join Date: May 2006 Location: Dripping Springs, Tx Posts: 2,698 Likes: 185 Liked 504 Times in 126 Posts	We wouldn't want any advantages for stick guys!!!! Ed Carpenter 66 Chevy II 4244 SS/H __________________ Ed Carpenter 2005 Chevy Cobalt A/SM Race Engine Development

05-03-2007, 11:53 PM	#7
Jeff Lee Guest Posts: n/a	If the car was OEM with a hydraulic clutch then it's OK....because that's "stock". NHRA #7494 SS/H 1970 AMC AMX 390 "Best Appearing" @ NHRA '06 Pacific Sports Nationals Arizona's BEST Realtor since '93 and I support racers! Property in AZ or moving here? I can help! Call me @ 602-418-9797 or e-mail JeffLeeAzRealty@Qwest.net

05-08-2007, 11:58 PM	#8
MHoward Junior Member Join Date: Jul 2006 Posts: 51 Likes: 0 Liked 0 Times in 0 Posts	But you can run a hydraulic button to release your trans brake in super stock to delay the reaction.doesnt seem fair.

05-09-2007, 04:12 AM	#9
greg fulk VIP Member Join Date: Jan 2003 Location: jackson Posts: 1,165 Likes: 0 Liked 5 Times in 3 Posts	wait till they add the delay boxes to SS.....that will be fair! let the man run a hydraulic clutch if he wants! ( B. S. ) novamoation __________________ Greg Fulk 308 308X P/SA "ALL AMERICAN"