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TD transmission swaps

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TD transmission swaps #1
donfishes Don B Oak Park, IL, USA Sign in to contact 1966 MG MGB V8 Conversion	Topic Creator (OP) May 23, 2016 06:04 PM Joined 9 years ago 21 Posts

I've a friend with a TD that has a seriously ailing transmission. It shifts like a pre syncromesh transmission.
Does anyone know if an MG B transmission is a direct swap?
Thanks

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Re: TD transmission swaps #2
LaVerne LaVerne Downey Fruita, CO, USA Sign in to contact 1954 MG TF "Green Hornet" 1969 MG MGB "The Beater" 1979 Triumph TR8 "Turd 8"	May 23, 2016 06:09 PM Top Contributor Joined 16 years ago 15,545 Posts

It is not. Your (his) options are to

1 rebuild the gearbox... he may just need to slow down his shifts...

2 try changing out to RedLine MT 90 gear oil.... helped my TD gear box quite a bit

3 pony up for a 5 speed.

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Re: TD transmission swaps #3
donfishes Don B Oak Park, IL, USA Sign in to contact 1966 MG MGB V8 Conversion	Topic Creator (OP) May 23, 2016 06:50 PM Joined 9 years ago 21 Posts

Thanks much. I'll suggest the lube change and then we'll reassess the options... likely it will require rebuilding.

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Re: TD transmission swaps #4
TD4834 Bill Chasser Sacramento, CA, USA Sign in to contact 1950 MG TD 1951 MG TD 1951 MG TD MkII 1952 MG TD MkII & more	May 23, 2016 07:33 PM Top Contributor Joined 9 years ago 6,620 Posts

First is not synconized. But that said you can't shift these like a modern gearbox. I found that out even after an overhaul.

Bill Chasser
TD-4834
TD-5779
TD/c-8151
TD/c-16920
TD-19408
TD-24060

TF-8200

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Re: TD transmission swaps #5
LaVerne LaVerne Downey Fruita, CO, USA Sign in to contact 1954 MG TF "Green Hornet" 1969 MG MGB "The Beater" 1979 Triumph TR8 "Turd 8"	May 23, 2016 08:41 PM Top Contributor Joined 16 years ago 15,545 Posts

Up shifts on one of these is a two step process...move the selector to neutral ..slight pause...then move to the desired gear. You are basically allowing the input shaft to slow down and match the next gear speed....kinda like shifting without using the clutch if you ever had to do so. Down shifts ....same two step process however double clutching can be benificial but the reality is you need to raise the input shaft speed (engine rpm) to match the speed of the lower gear. Since 1st in non syncro , you should not attempt to engage it while moving. If fact the best method for engaging 1st or reverse is to move the lever to either 2nd, 3rd or 4th. Once engaged it will stop the spinning input shaft and allow a smooth transition to first or reverse.

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Re: TD transmission swaps #6
donfishes Don B Oak Park, IL, USA Sign in to contact 1966 MG MGB V8 Conversion	Topic Creator (OP) May 24, 2016 07:30 AM Joined 9 years ago 21 Posts

Thanks, that is a very helpful!

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Re: TD transmission swaps #7
mmsheb Michael Marini Sheboygan, USA Sign in to contact 1953 MG TD	May 24, 2016 08:49 AM Joined 16 years ago 430 Posts

Don,
I have a good TD transmission. Contact me via email (mmsheb3 at gmail.com) if interested. I'm in Sheboygan, WI

Regards,
Mike

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Re: TD transmission swaps #8
donfishes Don B Oak Park, IL, USA Sign in to contact 1966 MG MGB V8 Conversion	Topic Creator (OP) May 24, 2016 08:58 AM Joined 9 years ago 21 Posts

Thanks much, I'll pass that on.
Don

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