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Gearbox swap
Posted: 17 Nov 2008 09:52 pm
by Chris_C
How easy is it to change an M45 for an M47? Basically, is it going to be a straight swap if I want a mk1 5sp?
Posted: 17 Nov 2008 11:23 pm
by sven360
If there was sunshine,moonlight and romance.Things would be good.
As it is there may be trouble ahead.......
M47 is related to M45 but if I remember correctly had tail extension to house 5th gear.
As diff bolts to rear of the box any increase in overall length of the box will give alignment problems......
But hey, what would I know,ask Mac,he'll know for sure.
Posted: 17 Nov 2008 11:42 pm
by Chris_C
Yeah, I'm quitely sat here hoping a 5sp prop and box will do the trick, but I think you could well be right...
I think you are also right in the asking of Mac

Posted: 18 Nov 2008 12:11 am
by Bilbo
think if you fit box and diff together then you may be ok, the 4 spd has a longer diff casing, 5spd shorter to counter the 5th gear extension. not 100% sure about the A. d/shafts, you may need to fit or remove adaptors depending or B. the prop, t/tube situation
couldn't think of a better way to spend a cold sunday
somebody herre must have done this swap surely........
Posted: 18 Nov 2008 07:12 am
by filthyjohn
Posted: 18 Nov 2008 07:55 am
by pettaw
Yeah should be a straight swap.
Posted: 18 Nov 2008 09:15 am
by pistonpen paultje
The gearbox is longer, shaft is the same size. The tip of the clutchhousing (bellhouse?) is different sometimes.
Posted: 18 Nov 2008 09:51 am
by classicswede
From what I remeber the eary 4 speed cars have a coarse sline prop and then later 5 speed cars have the common fine spline. If that is teh case you will also need to swap the bellhousing
Posted: 18 Nov 2008 09:58 am
by Chris_C
John, Varts was an M47 before the swap, not an M45 as a mk1 would have which is where my thinking started. I've never actually seen an M45.
Paul/Dai, thats awesome news.... though parents arn't going to be impressed when I tell them the B14 has to stay on the drive a bit longer to rescue my old bellhousing
Posted: 18 Nov 2008 01:46 pm
by SteveP
Just to reitterate, straight swap and props are supposed to be the same too (but interesting point what Dai said), so may not be the case with early/late models.
EDIT: What have you found?!

Posted: 18 Nov 2008 04:03 pm
by Chris_C
Nothing yet, and I don't have the pennies, but I want a mk1, and I have a spare gearbox or 2 in the long run (I've 2 here to replace the current 2) so working out if it's worth sorting one out. I really want a 343.
Posted: 18 Nov 2008 05:28 pm
by filthyjohn
Oh I see. Sounds like a good excuse to swap the engine at the same time

Posted: 19 Nov 2008 01:06 pm
by trabitom99
Chris_C wrote:Nothing yet, and I don't have the pennies, but I want a mk1,. ... I really want a 343.
Check out this beauty:
http://link.marktplaats.nl/209331583
The wheel may be on the wrong side, but the colour! The dash! The spoiler! The chrome!
Tom
Posted: 19 Nov 2008 04:53 pm
by Chris_C
Thats exactly the sort of thing Tom

Needs to be awesome colour, and as 70's as possible.
Posted: 19 Nov 2008 05:01 pm
by trabitom99
I like that car in a "historic" sense (rarity value!), but personally I prefer a Mk1 to be a bit more Volvolike - i.e. with a manual gearbox and the '78 on dash. A '78 / '79 manual in a mad colour would be perfect ... Or an '81 S-Version - the redblock would make up for the less funky exterior ...
If you're a big DAF fan, obviously you'd see that exactly the other way round
Tom