New girl on the forum and...(cont.)

[JayyE30]

Jay, what ratio diff are you using?

For now , it's what I have4.1 but I'll probably get 2.93 lsd . Would you prefer other?

[pandaboo911]

For now , it's what I have4.1 but I'll probably get 2.93 lsd . Would you prefer other?

I got a 2.79 LSD. You'll hear a million different opinions on which one is best but imo anything under 3.15 is good. Anything higher and you will hate driving on the highway

[LJ851]

For now , it's what I have4.1 but I'll probably get 2.93 lsd . Would you prefer other?

3.15 is what BMW put behind that eng/trans i think. It depends on what type of driving you will mostly do. For lower revs on the highway (and less acceleration) go numerically lower, for higher revs (and more acceleration) go numerically higher.


Does the 318is have a small case diff like other 4cyls? If so you will also need to change more than the diff when you swap ratios.




.

[pandaboo911]

3.15 is what BMW put behind that eng/trans i think. It depends on what type of driving you will mostly do. For lower revs on the highway (and less acceleration) go numerically lower, for higher revs (and more acceleration) go numerically higher.


Does the 318is have a small case diff like other 4cyls? If so you will also need to change more than the diff when you swap ratios.




.

Yea the 318s all came with small case, but none were LSD.

I bought my 318 with a medium case 4.10 from an m3. I assume the mount would have to be changed?

[JeST]

Running a 3.46 for my swapped car. It's not the best for highway cruising but I still get around 27mpg. Exhaust isn't too loud so I don't mind but I love the feel of it low end.

[ZM Blue Devil]

Running a 3.46 for my swapped car. It's not the best for highway cruising but I still get around 27mpg. Exhaust isn't too loud so I don't mind but I love the feel of it low end.

I dont think you have 3.46...

[JeST]

I bought it, had a shop half ass the install, then reinstalled myself. It's a 3.46 Unless you're recalling from when Rob had the car.

[F34R]

Yea the 318s all came with small case, but none were LSD.

I bought my 318 with a medium case 4.10 from an m3. I assume the mount would have to be changed?

You are wrong on that, I have sold 4 to date personally and OWN one currently. Unless you are talking about a 318i. Because the USA Spec had an optional 4.10 small case LSD. Came in the 318is models, and they are hard to find.

FYI, not for sale for those wondering.

[dinanm3atl]

Get a 3.73... and a 6speed. You get the best of both of worlds ;)

But if using a ZF box 3.25S from an E28 is best IMO.

[10Toes]

But if using a ZF box 3.25S from an E28 is best IMO.

This is what I have, I like it but some days I wish I had a 2.93 in it for better gas mileage. Best I have gotten with the 3.25 is 31.4 mpg.

[Jean]

Does the 318is have a small case diff like other 4cyls? If so you will also need to change more than the diff when you swap ratios.




.

Remove small diff, install medium case diff with sensor.. Done.

[F34R]

Get a 3.73... and a 6speed. You get the best of both of worlds ;)

But if using a ZF box 3.25S from an E28 is best IMO.

This is my plans in the long run, SOOOOOO worth it!

[LJ851]

Remove small diff, install medium case diff with sensor.. Done.

So i am incorrect in thinking the halfshafts are different lengths, etc.?

[Roysneon]

can we please see more pics of you hanging on top, bending over it or just standing next to your newly painted engine bay?

You're a pretty sad guy aren't you?

[10Toes]

So i am incorrect in thinking the halfshafts are different lengths, etc.?

All the same, just if you get a diff from an E28 you have to switch the output flanges and the rear cover to a med e30 diff cover.