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Three speed to four speed gearbox change.
Posted: Fri Mar 12, 2021 3:29 pm
by sv4670
Could some kind soul tell me what are the implications of swapping a MG M type three speed to a four speed crash gearbox from a Minor? Is the 4 speed heavier? Does the propshaft require shortening?
Re: Three speed to four speed gearbox change.
Posted: Sat Mar 13, 2021 2:36 am
by Ian Grace
I think the biggest impact is on the wallet!
But seriously, I think they both take a 34.5 inch prop shaft. And I don't think there is a significant weight issue.
But if you fit a 1934 SV Minor 4-speed synchro box, it is MUCH heavier, so go for the 4-speed crash box which is a super box.
Re: Three speed to four speed gearbox change.
Posted: Sun Mar 14, 2021 5:28 pm
by sv4670
Yes it is the crash box I am looking for.
Re: Three speed to four speed gearbox change.
Posted: Sun Mar 14, 2021 6:10 pm
by Ian Grace
I'll put a Wanted ad in the April Newsletter for you. Working on it now.