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Discussion Starter #1
Guy's, the beast is going to need some tranny work. Should I rebuild the 5spd,
get a new one, or swap to a 6spd. The car is a US spec 3.6 w/a 3.91 lsd diff.
It would be nice to have a 6 spd for the highway. :cheers:
 

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It all depends on what work you need doing on your 5 speed. Is it the seals or is it a major hardware overhaul? I do know if you did swap to the 6 speed, you would also have to change your diff (Different ratios) and I think also the propshaft. This is not cheap option, upwards of £1500, then add in the grearbox work, miscellaneous parts and labour ??

I'd personally stick with the 5 speed and try to keep the car as original as possible?

Cheers

Brian


mblaster said:
Guy's, the beast is going to need some tranny work. Should I rebuild the 5spd,
get a new one, or swap to a 6spd. The car is a US spec 3.6 w/a 3.91 lsd diff.
It would be nice to have a 6 spd for the highway. :cheers:
 

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Discussion Starter #3
The transmission itself is in good shape but the syncros are about shot. The car has 150K miles on her. Seems like if it is a major deal to swap for a 6spd I'll just rebuild the 5 spd.
 

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There's an extra 70kgs / 154lb weight in the 6 speed too. I'd stick with the 5 speed if you can.
cheers,
Phil.



mblaster said:
The transmission itself is in good shape but the syncros are about shot. The car has 150K miles on her. Seems like if it is a major deal to swap for a 6spd I'll just rebuild the 5 spd.
 

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Discussion Starter #5
I've found changing to a 6spd would be very involved and essentially not worth the money. I'm better off just rebuilding the 5spd. It will cost me 2K USD to do the job.
 

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Just an idea, but you might be able to source a used gearbox for less? Maybe look at www.mobile.de or www.ebay.de. Could get a low miles one. Shipping would be a consideration though?

Regards

Brian



mblaster said:
I've found changing to a 6spd would be very involved and essentially not worth the money. I'm better off just rebuilding the 5spd. It will cost me 2K USD to do the job.
 

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Be sure to keep us updated! I'm sure as many of our cars have more than 100K miles more and more of us may have to go down this road.
 

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Thanks.. but is that with everything else that comes with it. As it was mentioned about changing other things also when doing this. 5- 6spd conversion. Would a quaife be a option?
 

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Burton, Quaife is certainly an option for final drive / diff, i think they're 'only' £630, it has crossed my mind if they could service the gerty r280 box, I bet they could. Touch wood, my transmission components seem ok for now but I would definately get in touch with quaife if I had problems.
Leda suspension is another U.K. specialist worth checking out.
cheers,
Phil.
 

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Yes, the 6 speed box weighs an extra 70 kg. It´s like carrying an extra human in the car at all times.

In fact, the fastest of the e34 M5s is the 1994 5 speed with 17 inch throwing stars and non-Nring package.

1. Brakes and susp are smaller and lighter
2. 17 inch wheels are lighter (therefore less rotational mass)
3. 70kg lighter due to 5 speed box.
 
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