My e30 318is s52 swap thread

[windsor318is]

well, i had it unoffically dynoed at 201whp, but my ac pully i had forgotten i had removed all the bolts from came loose and put a hole in the rad, after that it wouldnt start, the pullley must have kit something else as well....on a side note, i have an excuse to pull the rad out and mount the supercharger braket, i didnt get charged for it so i go back in a couple weeks, and ill have a slip this time

http://www.youtube.com/watch?v=av6tIuGm6CU

[windsor318is]

have you done anything with your supercharger yet?

yes im taking it apart, migght as well change the bearing before i install it. i also have to get it dynoed before i install it. blower is this winters project.

[chuck90m3]

Re: differential ratio - I'm running a 3.46 LSD. If you're ever going to be across the border in MI, we can meet up so you can see if 3.46 is right for you.

3.25:1 LSD Check it

[e30s52]

have you done anything with your supercharger yet?

[windsor318is]

heres more, you can see the bearing that exploded, and actually wore out and melted the ball bearing together, if anyone needs them i have the part numbers for the bearing that cost me 29 bucks from a bearing company rather than 100 from the dealer.

i painted it, i got bored waiting for the bearing to come in at work

hers what came out of my diff once i got the bearing off with a hydalic press, you can see everything was melted.

this is what the bearing is suppose to look like lol, pressing it back on.

anf finally pressing the new cup into the diff bore


so now the diff is good as new, always cheaper to rebuild than get another 20 year old diff.

[windsor318is]

little update, i took the 2.93 appart, pretty easy, and i dont have any shavings in the casing, the only place that seems to be my problem is the shaft that bolts to the driveshaft. i can move it a 1/4" up and down. anyone know what size that monster nut on the end of it is??

im going to see if i can fix this instead of getting another one. im wondering if the actual casing is fucked, ill swap it with the 4.10 casing.

[m3_eater]

how far are you from detroit? i crosss quite often, we can test each others cars out!

I'm in the NW suburbs, but I don't mind coming down to the Detroit area at all to meet. Early weekday evenings are good. PM me sometime.

[windsor318is]

you no what, i think the guy selling doesnt no what he has, thats not the cover he has. thats what i thought the rear was suppose to look like. thats for the info on the swapping of parts

[OoPEZoO]

sweet thanks, thats funny though the rear flange looks the same, the mount must be different by just enough

It shouldn't look the same. The E28 rear cover looks like this.



The drive flanges are also a different size than the E30.......BUT, they are easy to swap. The covers are plug and play. For the flanges, just wedge a piece of wood between the case and the lip on the flange and give it a good whack with a mallet. They pop right out and you can replace them with the ones from your E30 Diff.

[e30s52]

yep just swap the flanges and rear cover and your ready to go

[windsor318is]

sweet thanks, thats funny though the rear flange looks the same, the mount must be different by just enough

[Eric Giles]

can anyone confirm that a 85 535i diff is a direct swap into an e30, from the pics looks like its identical, im wondering if the bolt pattern for the trailing arms is the same.

Yes, the E28 diff will work fine-you just have to swap over the rear cover from your E30 diff to it and it will bolt right up. I 'think' the drive flanges are the same, but if not just swap those over also-takes 30 seconds to do that.

[windsor318is]

can anyone confirm that a 85 535i diff is a direct swap into an e30, from the pics looks like its identical, im wondering if the bolt pattern for the trailing arms is the same.

[E30_fiend]

Re: differential ratio - I'm running a 3.46 LSD. If you're ever going to be across the border in MI, we can meet up so you can see if 3.46 is right for you.

How fast can you go in 1st and 2nd???? (e30polak using Taylor's comp...hehehe)

[windsor318is]

Re: differential ratio - I'm running a 3.46 LSD. If you're ever going to be across the border in MI, we can meet up so you can see if 3.46 is right for you.

how far are you from detroit? i crosss quite often, we can test each others cars out!