6 speed

[blimmer86]

im hope 2 do a enine conversion this year im thinl 2.7 but i want a six speed box iz this possible or am i livin in a dream world
cheers
matt

[toby]

I've read somewhere about 6 speed conversions and it wasn't recommended.
I think it would require a longer gearbox and changing transmission parts. Better to upgrade your differential to get better acceleration, maybe.

Ah found it -
"Could it be done? Sure, but why would you want to? Six-cog gearboxes have a great deal more to do with marketing and one-upsmanship than they do actual performance benefits. Most cars with sixth-gear intergallactic overdrive, including the E46 M3 in my opinion, do not have sufficient differential gearing to take advantage of the fact."
Quoted under BMW Project
http://www.europeancarweb.com/tech/tech ... index.html

[toby]

I forgot to mention this is an American site and the BMWs over there tend to be a bit different but may still be the same with regard to changing gerbox anyhow.

[blimmer86]

i just wanted some one 2 chase me and see that im goin flat out in 5th and then all of a sudden 6th cheers anyway

[toby]

I know what you mean - I had thought the same thing - that's how i found that article.

I would be interested to see if the more technically minded folk here have any opinions...

[ian332isport]

Fitting a 6 speed box is not going to make any difference to how fast the car goes.

6th gear is the same ratio as 5th in the regular 5 speed E30 box. The extra gear is in the lower gears and is designed to allow you to have closer ratio's.

You can physically fit an E36 M3 6 speed box on an M20 engine, but it's more trouble than it's worth.

Ian.