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cgill
Chris Gill
Salmon Arm, British Columbia
(129 posts)

Registered:
08/13/2009 12:06AM

Main British Car:
1979 MGB roadster Buick 300 stroker with EFI

authors avatar
Pressure plate for Buick flywheel and V6 T5 tranny?
Posted by: cgill
Date: July 14, 2011 05:46PM

Okay I'm stumped.

I managed to find a pressure plate from a jeep that matched the one that came with my engine (a buick skylark) and Camaro V6 T5 tranny. However when I bolted the clutch in the pressure plate 'fingers' are laying flat against the clutch indicating that something isn't right. I'm using a HTOB but I can wiggle it back and forth easily so it isn't pressing the fingers down.

Someone recommended an S10 pressure plate so I picked one up today. However it is smaller in diameter and depth than the one I got with the car.

http://i697.photobucket.com/albums/vv335/cgill/IMG_0664.jpg

http://i697.photobucket.com/albums/vv335/cgill/IMG_0663.jpg

Can someone please tell me which pressure plate I need? I am quickly running out of options.

A big thank you for any help!
Chris


mgb260
Jim Nichols
Sequim,WA
(2465 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: Pressure plate for Buick flywheel and V6 T5 tranny?
Posted by: mgb260
Date: July 14, 2011 08:04PM

Chris, Have you verified the clutch disc is not backwards.


cgill
Chris Gill
Salmon Arm, British Columbia
(129 posts)

Registered:
08/13/2009 12:06AM

Main British Car:
1979 MGB roadster Buick 300 stroker with EFI

authors avatar
Re: Pressure plate for Buick flywheel and V6 T5 tranny?
Posted by: cgill
Date: July 15, 2011 11:46AM

Not yet. We are pulling it tomorrow night. But it is extremely unlikely because my friend helped me put it together and he has done literally hundreds of clutches (Ford mechanic). But it is a possibility. I think more likely the cause is a clutch that is too thick.
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cgill
Chris Gill
Salmon Arm, British Columbia
(129 posts)

Registered:
08/13/2009 12:06AM

Main British Car:
1979 MGB roadster Buick 300 stroker with EFI

authors avatar
Re: Pressure plate for Buick flywheel and V6 T5 tranny?
Posted by: cgill
Date: July 17, 2011 01:19AM

Okay so it turns out I had an incorrect pressure plate for my flywheel. I ended up re-using the one I got with the car for the time being.

So I need to find a pressure plate that can mate up to a Buick 215 flywheel. The one I have is a 10.5" Borg and Beck. Unfortunately there wasn't any more information stamped on it. Any ideas?

Cheers,
Chris


mgb260
Jim Nichols
Sequim,WA
(2465 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: Pressure plate for Buick flywheel and V6 T5 tranny?
Posted by: mgb260
Date: July 17, 2011 07:08AM

Chris, the one Jim B. mentioned. Generic GM 10 1/2"probably.(disclaimer:compare with the one that works first)Diaphram type isn't as stiff and takes less pedal pressure than Borg & Beck or Long type. The shorter one was from a Jeep? Maybe the Jeep had a thicker flywheel like the Camaro ? I can see you would have to have matching pairs. This kind of thing helps everyone when you figure it out.



Edited 1 time(s). Last edit at 07/19/2011 12:56PM by mgb260.


DiDueColpi
Fred Key
West coast - Canada
(1367 posts)

Registered:
05/14/2010 03:06AM

Main British Car:
I really thought that I'd be an action figure by now!

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Re: Pressure plate for Buick flywheel and V6 T5 tranny?
Posted by: DiDueColpi
Date: July 18, 2011 02:57AM

Chris,
Try the website for centerforce clutches.
They have a page that lists the measurements for some of the more common clutches.
I'll bet yours is the 10.4'' gm unit.
Cheers
Fred


cgill
Chris Gill
Salmon Arm, British Columbia
(129 posts)

Registered:
08/13/2009 12:06AM

Main British Car:
1979 MGB roadster Buick 300 stroker with EFI

authors avatar
Re: Pressure plate for Buick flywheel and V6 T5 tranny?
Posted by: cgill
Date: July 18, 2011 06:34PM

Thanks Jim and Fred.

I think you are right. All I need is to find one with the correct bolt pattern and 'fingers' set at the right angle - the Jeep ones were almost flat before I put them in which probably means the flywheel was thicker.



roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Pressure plate for Buick flywheel and V6 T5 tranny?
Posted by: roverman
Date: July 18, 2011 08:16PM

FWIW, many US based clutches are set-up for a "non-step" flywheel. This tends to make things easier. Good Luck, roverman.


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