Engine and Transmission Tech

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waterbucket
Philip Waterman
England
(112 posts)

Registered:
07/30/2011 01:08PM

Main British Car:
1972 MGB GT

Gearbox to bellhousing adaptor thickness
Posted by: waterbucket
Date: June 18, 2016 04:37AM

Can anyone tell me the minimum thickness for an adaptor plate between a T5 gearbox and the aluminium bellhousing. I will use steel for the plate for this, I was thinking 3/8"
Philip


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6470 posts)

Registered:
10/23/2007 12:59PM

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

authors avatar
Re: Gearbox to bellhousing adaptor thickness
Posted by: BlownMGB-V8
Date: June 18, 2016 06:59AM

3/8" is the thinnest I've seen. And about 1/8" at the engine.

Jim


ex-tyke
Graham Creswick
Chatham, Ontario, Canada
(1165 posts)

Registered:
10/25/2007 11:17AM

Main British Car:
1976 MGB Ford 302

authors avatar
Re: Gearbox to bellhousing adaptor thickness
Posted by: ex-tyke
Date: June 18, 2016 09:06AM

A couple of things......Make sure that adapter plate thickness chosen doesn't compromise engagement of the pilot bearing/xsmn input shaft....
......and ideally, plate thickness should be 1-1/2 times the bolt diameter (otherwise ideal fastener torque is not obtained)....if 3/8" steel is chosen, I'd use NF fasteners/threads to allow a higher fastener torque than NC fasteners.
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