Engine and Transmission Tech

tips, technology, tools and techniques related to vehicle driveline components

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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

Seized T56
Posted by: roverman
Date: March 05, 2013 01:25PM

Not in customs, run low on lube. Anyone rebuilt one of these ? I haven't pulled it yet. Should be a challenge, to pull apart. Thanks, roverman.


Jim Stabe
Jim Stabe
San Diego, Ca
(829 posts)

Registered:
02/28/2009 10:01AM

Main British Car:
1966 MGB Roadster 350 LT1 Chevy

authors avatar
Re: Seized T56
Posted by: Jim Stabe
Date: March 05, 2013 04:23PM

Art

I had to take mine apart to install a shifter relocation kit. It took me about a week of evenings to get the job done. PM me your email address and I'll send you a pdf copy of a manual for doing the job.


DiDueColpi
Fred Key
West coast - Canada
(1365 posts)

Registered:
05/14/2010 03:06AM

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

authors avatar
Re: Seized T56
Posted by: DiDueColpi
Date: March 06, 2013 04:00AM

Just my two bits.
These tranny's use needle bearings so a "soft seize" generally is survivable as it just jams a syncro.
"Rocking it" from 1st to reverse will free it up with usually no harm done. You can pull it apart to check and freshen it up, or run it as is.
If it won't unlock then a major overhaul is in store. If this is the case and it wasn't of some phenomenal historical significance, I would look for another one.
Cheers
Fred
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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: Seized T56
Posted by: roverman
Date: March 06, 2013 11:04AM

Thanks Fred, I shall look up the pattern. Historical significance was former owners', bride to be, wasn't going to let him spend another penny, to fix. Symtom was,he was driving along the hiway, and it went into neutral. I suppose when it cooled somewhat, it seized. onward, roverman.



Edited 1 time(s). Last edit at 03/06/2013 08:16PM by roverman.


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: Seized T56, and recovered
Posted by: roverman
Date: March 11, 2013 11:33AM

Great tip Fred ! You saved me 2.3 tons of work. I "massaged"/no hammer, the shifter into all 7 gears, after adding 3 quarts of atf. Then I ran motor and trans together, without driveshaft. Note, 5th and 6th really makes the tailshaft vibrate, without the slip-yoke in there ! Fred, next time, lunch is on me ! Onwards, roverman.


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: Seized T56
Posted by: roverman
Date: May 10, 2016 05:22PM

Ok, What is the preferred lube ? I have Type III synthetic, auto trans lube ? Thanks, roverman.


MG four six eight
Bill Jacobson
Wa state
(324 posts)

Registered:
10/23/2007 02:15AM

Main British Car:
73 MGB Buick 215, Eaton/GM supercharger

Re: Seized T56
Posted by: MG four six eight
Date: May 11, 2016 01:17AM

Art,

If it's from a GM vehicle, the preferred lube is Manual Transmission Fluid GM part No. 88861800.

Bill



Edited 1 time(s). Last edit at 05/11/2016 01:19AM by MG four six eight.



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