What kindda gear ratio will I want w/m50??

[wastedincome]

OK bimmer fans, I have been around here 4 a bit & have ALWAYS planned to swap a S5/x onro my 92 e30 vert (which has a m42 as we speak) BUT as things went this winter I NOW have a free m50 which I want to utilize since I have been told that I CANT get my HP 'goal" with. I have just recently "toasted" the 4:27 lsd (small case) diff and need to start the "swap". Ideally I would like to go w/ the z3m rear sub frame section since it will gain me 5 lug, better half shafts AND much better breaks.

I'm dragging ON!!!!!!!!!!!!!!!!!!!!


What gear ratio do I want w/ a e30 and a m50 swap??? There is a really good chance that I will go turbo too....

Help please

[SchnellerVert]

What transmission do you plan on using? That is your driving factor.

[wastedincome]

What transmission do you plan on using? That is your driving factor.

Nice question, I have NOT decided wheather I'll gp w/ a e30/m20 or e36 sine I DONT have either at this time. I guess I should decide. What's A: best B: cheapest C: easiest?

[SchnellerVert]

What are your plans for the car? no more timing belt changes? or more sporting in nature? Like Joey's from R.I.?

[mentaleeill]

e30 getrag trans- 3.73, 3.46

e36 zf 3.25

[SchnellerVert]

3.46 works well with a E36 Getrag or ZF also. It's only affects rpms by 200 at standard 75 MPH.

http://www.unixnerd.demon.co.uk/revs.html

[e30polak]

if u can, go for the ZF off an e36. don't quote me for this but i think they r more reliable then the getrags. u should use a 3.46 or 3.25, but some people even go 2.93 or 2.79. i run a 3.25 on my s52 and its simply amazing!!!

[wastedincome]

What are your plans for the car? no more timing belt changes? or more sporting in nature? Like Joey's from R.I.?

Plans for the car are on the "SPORT" side, as I allready have Koni SA's, H&R's, Z3 rack, etc. I haven't had to deal w/ TB's on the vert cause of the M42 w/ chain. I dont know "joey's" car off the top of my head

[e30polak]

for sportiness, i'd definitely say get the e36 ZF with a 3.25 lsd. this way u will have long enough gears, while still keeping plenty of torque off the line :pimp:

[rede30]

Do the getrag tranny, i am not going with this choice since i had all the parts already but i still might change. This is a beautiful tranny and the cost will be less.

[SchnellerVert]

Do the getrag tranny, i am not going with this choice since i had all the parts already but i still might change. This is a beautiful tranny and the cost will be less.

What Getrag? E30 or E36? E36 units suffer fro a multiple maladies.

[rede30]

sorry, the e30 one.

[gjuu]

3.46 works well with a E36 Getrag or ZF also. It's only affects rpms by 200 at standard 75 MPH.

http://www.unixnerd.demon.co.uk/revs.html

Another good Rev Calculator here :) http://members.dodo.com.au/~wawawa/index.htm