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MG MGB GT V8 Factory Originals Technical - LT77 gear extension
|Is it possible to replace the gear extension mounting rubbers on an LT77 gearbox fitted to a factory V8 without removing the gearbox? There doesn't seem to be a lot of room through the top tunnel opening. Has anyone done this?|
|Yes done it, take the cover plate off the tunnel. You will be able to get at them if you undo the g/box cross member and lower it a bit on a trolley jack.|
|Likewise - but from underneath - using poly bushes now.|
|Thanks for the replies. I take it poly bushes are the way to go. Are the ones Clive Wheatley has Poly or as original.|
|Ian - Clive is a shrewd operator and always looking for genuine improvements - ask him what he has. Otherwise Rimmers of Lincoln - have both. Yes, it is the way to go.|
|May I join in, although I don´t own or drive a V8? |
In fact, my car is a 1964 MGB with a 2-lire-engine and a Rover SD1-box (LT77) instead of the original 4-speeder.
I built this conversion myself in 1983 and it usually works very well. But now I need to replace my LT77. It´s very noisy when accelerating in 1st, 2nd and 3rd gears.
Does anybody have more infos about this gearbox? I am looking for a sort of manual and info about the numbers on the box – they give a clue as to what ratios are inside, so I was told.
I also need a parts supplier: all the rubber mounts on the gearshift extension have deteriorated and need replacement. Rimmer doesnt seem to have LT77-parts anymore.
The pic shows the LT77 in situ before the drivetrain is installed
|Here's a little piece from RPI|
And another bit from Paddock
Here's an article with links to pdf files on the LT77
I have a R380 box from TM Transmissions. He has a FAQ page for the LT77.
TM can do you an exchange LT77 from £375. He must get spares from somewhere - email him and ask.
Several years ago I rebuilt a LT77 using a kit from here http://www.transmission-rebuild-kits.co.uk/-c-164_121.html
It wasn't very successful, and although the gearbox worked OK it made a horrible noise. I eventually traded it in with TM Transmissions for the reconditioned R380.
Hope this is of some help.
|Somewhere on the internet is a complete service manual for the LT77. I printed it out and used it. Not sure how to locate it now, but if I find out I'll post here.|
|Here's a photographic record|
thanks for your help and for the links!
This thread was discussed between 27/01/2012 and 19/02/2012
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