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maxwedge5281
larry ingram

(46 posts)

Registered:
09/23/2014 05:59AM

Main British Car:
59 bn6 zz4 sbc, 63 bj7 383sbc

hydraulic throwout bearing problem
Posted by: maxwedge5281
Date: September 19, 2017 07:55AM

I recently purchased a 1959 ah bn6 with a 250 chev in line six motor and tremec 5 speed. the drivers side footbox had been cut to provide space for a push slave cylinder attached to the gm bell housing. I welded up the footbox area . so the slave cylinder had to be moved. hence, the howe racing hydraulic throwout bearing.i believe that the engine is a late sixties Camaro in line six. the problem that I have is that the engine has the six cylinder clutch and pressure plate which has the flat fingers on the pressure plate. this pressure plate requires a longer throwout bearing and the howe unit will not work without hitting the face of the pressure plate. I need a pressure plate with the raised fingers....this will give me an additional one half inch less distance for the throwout bearing to account for before release of the clutch. the tremec is from a v8 car and has the 26 spine input shaft, etc. does anyone know if the v8 pressure plate and clutch will interchange with the six cylinder clutch and pressure plate. I really do not want to mount a pull type slave cylinder and now that I have corrected the footbox I posively do not have space for the push slave cylinder. unfortunately none of the local parts houses have a clutch and pressure plate on the shelf to make a comparison. and yes, I already have a sbc powered bn6 but also wanted the six cylinder car as well. thanks for any help or constructive advice!!!



Edited 3 time(s). Last edit at 09/19/2017 08:06AM by maxwedge5281.


ex-tyke
Graham Creswick
Chatham, Ontario, Canada
(971 posts)

Registered:
10/25/2007 11:17AM

Main British Car:
1976 MGB Ford 302

authors avatar
Re: hydraulic throwout bearing problem
Posted by: ex-tyke
Date: September 19, 2017 10:21AM

Try searching through the RockAuto catalogue for a 10.5" dia clutch with 1-1/8" x 26T spline ...you would have to search applications that would have used the BW T5 or Tremec xsmn.
There is a 9-11/16" clutch for a '93 V6 Camaro that might work
Then there's this aftermarket 10.5" clutch
[www.ebay.com]


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5298 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: hydraulic throwout bearing problem
Posted by: BlownMGB-V8
Date: September 19, 2017 10:33AM

You should only need the pressure plate I have a new Hayes that ought to work for you, got it at a good price too. Where are you located Larry?

Jim


maxwedge5281
larry ingram

(46 posts)

Registered:
09/23/2014 05:59AM

Main British Car:
59 bn6 zz4 sbc, 63 bj7 383sbc

Re: hydraulic throwout bearing problem
Posted by: maxwedge5281
Date: September 20, 2017 05:46AM

jim, I am in south Carolina. yes my clutch plate is fine and has the proper splines.


MGBV8
Carl Floyd
Kingsport, TN
(3210 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
79 MGB, Buick 215

authors avatar
Re: hydraulic throwout bearing problem
Posted by: MGBV8
Date: September 20, 2017 10:07AM

May can re-drill a pressure plate to match the flywheel.


maxwedge5281
larry ingram

(46 posts)

Registered:
09/23/2014 05:59AM

Main British Car:
59 bn6 zz4 sbc, 63 bj7 383sbc

Re: hydraulic throwout bearing problem
Posted by: maxwedge5281
Date: September 30, 2017 05:28AM

howe racing makes a spacer to fit on the throwout bearing to push the bearing one eighth of an inch closer to the pressure plate fingers...in other words they can increase the overall length of the bearing assembly. you can use two of the spacers to increase the overall length by one quarter of an inch. I did that and it gave me the necessary clearance. thanks for the help.


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