Swap 1/4 Mile Thread

[sharksforthecup]

Already have cams

Which kind?

[e30s52]

Which kind?

Shricks

[Wh33lhop]

I used to run an m50 with getrag 260 and 3.25.

How'd you like that setup? Which M50 were you running?

[justin_l_]

I bet if I had traction and pulled some crap out of my car I would have had a mid 13 sec NV M50...

[e30polak]

Already have cams and possible a supercharger by the end of the year.

Well then you'll rape me!

If I get bored after cams, I will be doing a 2.8 m50 NV turbo with custom turbo cams, worked head, and coated pistons. Even though I could just boost the s52, I want to do something a little more challenging. :D

I used to run an m50 with getrag 260 and 3.25.

260/3.73:
3.83 1st torque applied: 14.29:1
2.20 2nd-8.2:1
1.40 3rd-5.2:1
1.00 4th-3.73:1
0.81 5th- 3.02:1

zf/2.93:
4.21 1st torque applied12.33:1
2.49 2nd-7.3:1
1.66 3rd-4.86:1
1.24 4th-3.63:1
1.00 5th-2.93:1:1

zf/3.25
4.21 1st torque applied: 13.68:1
2.49 2nd-8.01:1
1.66 3rd-5.4:1
1.24 4th-4.03:1
1.00 5th-3.25:1

So yes I do have somewhat aggessive gearing considering how freely the s50 revs. Its all in the first 2 gears, they are too short. My first gear is only slightly longer than yours if you are indeed running a ZF with a 3.46. The most common ratio is a 3.25 which is probably what I would use, if I decided to switch, but there is no real reason to.

I was misinformed. Everyone said that the 260+3.73 is about the same as the ZF+2.93. With your calculations, it's the ZF+3.25 that is comparable. I'm guessing the 260+4.10 is more like the ZF+3.46. Sorry for the misunderstanding, and I am actually running the 3.46. Ideally I'd like the 1st & 2nd gear ratio of the ZF+2.93, and the 3rd-5th of the 3.46! :up:

[e30s52]

Well then you'll rape me!

If I get bored after cams, I will be doing a 2.8 m50 NV turbo with custom turbo cams, worked head, and coated pistons. Even though I could just boost the s52, I want to do something a little more challenging. :D

Thats why I am getting a supercharger but I am looking for another e34 for a chevy swap and maybe a turbo or two. I know your car is a street car so thats a big diffrence from mine. I have nothing in my car at all so its not very nice to drive on the street.

[MIKe30]

damn, I need to get my car buttoned up... now.

[e30polak]

Thats why I am getting a supercharger but I am looking for another e34 for a chevy swap and maybe a turbo or two. I know your car is a street car so thats a big diffrence from mine. I have nothing in my car at all so its not very nice to drive on the street.

Word. It's my all around car. Since I went with the coil-overs and all poly urethane bushings, daily driving the car in wonderful LA streets sucks! :down:

I always warn girls before they get in the car that the ride will not be very "smooth." :nice:

As far as power, I'm very interested in the 5.0 swap that Rob at e30 motorwerks started on. An aluminum head 5.0 is almost the same weight as an m20! With proper heads/intake manifold/cam and tune that would be a real torque beast in an e30! :crazy:

I really have to stop spending $ on my car, I should be saving for a house!

damn, I need to get my car buttoned up... now.

This! :hitler:

[Stephen]

Well then you'll rape me!

If I get bored after cams, I will be doing a 2.8 m50 NV turbo with custom turbo cams, worked head, and coated pistons. Even though I could just boost the s52, I want to do something a little more challenging. :D

But I wanted to do the Boosted M50 NV

[e30s52]

Word. It's my all around car. Since I went with the coil-overs and all poly urethane bushings, daily driving the car in wonderful LA streets sucks! :down:

I always warn girls before they get in the car that the ride will not be very "smooth." :nice:

As far as power, I'm very interested in the 5.0 swap that Rob at e30 motorwerks started on. An aluminum head 5.0 is almost the same weight as an m20! With proper heads/intake manifold/cam and tune that would be a real torque beast in an e30! :crazy:

I know I have to do the same thing now too. I just cant help and today I got another set of wheels :p. I have an ls1 if you want a 5.6.

[whiltebeitel]

Any of you see BMWSOB's latest run? (on the right)



*stolen from http://forums.bimmerforums.com/forum...php?t=1339872*

[e30s52]

Damn, great times!

[rpm620]

yup i watched the videos on BF.C.. wish i could have gone but i had work.. thats my local 1/4 mile track.

[e30polak]

But I wanted to do the Boosted M50 NV

I wanted to do that since 3 months after I completed my swap! :hitler:

s52 = not worth the $ IMO.

I know I have to do the same thing now too. I just cant help and today I got another set of wheels :p. I have an ls1 if you want a 5.6.

I feel you man. I see too many deals and I grab stuff impulsively. Got a pair of sparcos, and a sparco strut brace in the past month.

I can't wait to start working full time at the beginning of 2010! :D


As far as the LS1, I'm good on that. I could do the 5.0 swap for the price that I could sell my motor for. ;)

[e30s52]

I wanted to do that since 3 months after I completed my swap! :hitler:

s52 = not worth the $ IMO.



I feel you man. I see too many deals and I grab stuff impulsively. Got a pair of sparcos, and a sparco strut brace in the past month.

I can't wait to start working full time at the beginning of 2010! :D


As far as the LS1, I'm good on that. I could do the 5.0 swap for the price that I could sell my motor for. ;)

Nice! I got the LS1 at a very good deal so I could not resist it.