Want to do an M30 swap

[Garageaholic]

Flywheel weight I don't care too much for, I am picking up a LTW flywheel for a good price, but if they all bolt on, that's fine. I'm getting the flywheel for such a good price that the clutch setup doesn't matter that much, so long as I can find an OTS stock kit to work.

EDIT: Lets see if we can make this as long as the x5x swap thread :D

Tranny: E28 5 speed
Flywheel: lightweight JBR 8.5# for E28 manual cars
Clutch: E28 Sachs clutch

That was the setup I went with and it works perfectly fine.
Car revvs up vewwwwwwwwwwy nicely.

[george graves]

Ok - I'll try to add to this thread as thing pop into my head. For example:

- Use allan bolts to attach the motor mounts to the block. They afford much more clearence.

- Hood clearence is tight - I rub the hood on the AFM and the TPS rubber boot with my '89 hood pad. Thinking for going with some dynomat in place of the hood pad.

[Axxe]

Tranny: E28 5 speed
Flywheel: lightweight JBR 8.5# for E28 manual cars
Clutch: E28 Sachs clutch

That was the setup I went with and it works perfectly fine.
Car revvs up vewwwwwwwwwwy nicely.

How is that clutch coping with turbo duty? I hear that the E34 M5 clutch will work, can anyone confirm this?

[Garageaholic]

Unfortuantely, i haven't driven it yet after turboing it, but when I do i'll let you know. It's only about 80-100 more horsepower than stock, and it's in a much lighter car than a 5 or 7 series, so I dont' think it should be a problem.

Not to mention, i'm not going to kill it. I'm going to baby this car and be very cautious to break it in properly.

[JoeMadoo]

So are the M3 clutches different? I figure if the trannys are interchangable so are the clutches. I have 3 hours left on ebay i want to snag it.

[Axxe]

Unfortuantely, i haven't driven it yet after turboing it, but when I do i'll let you know. It's only about 80-100 more horsepower than stock, and it's in a much lighter car than a 5 or 7 series, so I dont' think it should be a problem.

Not to mention, i'm not going to kill it. I'm going to baby this car and be very cautious to break it in properly.

I hear ya on that, however if the e34 M5 unit fits, it hold a lot more power. It should be good for my sligtly more ambitious power plans :)

[Garageaholic]

Do you think i'm going to have future problems axxe?

because changing the clutch in an M30E30 (especially turbo) is a bitch and a half.

[Axxe]

Well, look up what the E28 boy run on their turbo cars with stage 1. If they are running stock clutch, they you are probably fine. Remember that the clutch is dependant on torque, not HP, vehicle weight, and tire grip. Even with a super light car, lots of torque and sticky tires can make a clutch slip if it was marginal with shitty tires.

I don't have any experience with Turbo M30 E30's (yet), so I can't say but if I had already put in a new clutch like you have, I'd just run it until it slips, then get it rebuilt with higher holding power pressure plate and high performance clutch disc material. Hopefully you can get at least a full season out of it, so that when the car is stored you can then rebuild the clutch and fuss with it. I know it's not a fun job :(

[JoeMadoo]

Maybe?

[george graves]

Well, look up what the E28 boy run on their turbo cars(

Again - mye28.com is your best source for m30/turbo m30 info out there.

Just bumping this with a tad bit of more info....

- The e34 m30 oil pan uses the exact same oil level sender as the m20 - direct fit/plug and play. So if you get a e34 m30 oil pan with out a sender, don't worry, just swap your m20 sender to it.

- The stock e34 m30 airbox looks good under the hood, but you need to make a small bracket to attach it with. Ryan make me a peice out of ABS with that attached to the fender well where the coil usually goes.

- While you are cutting your shift linkage to length, fill it with lead. After cutting, get it welded, then mount in vice pointing up so that the bottem end is touching the metal of the "slide" of the vice. Heat with a torch, and add in lead.

- Even the stock m30 clutch take more effort than a stock m20 clutch. At first it will be a bitch in stop and go traffic. Then you grow calves and all is good.

- Fender washers are great for "fine tunning" the height of the engine. Not so much for hood clearence as for oil pan to subframe/rack clearence.

Ok - hope that helps someone...

...

[JoeMadoo]

Thread number 100....

Would an 335iX be possible?

[george graves]

Already been done, it somewere on e30.de. They guy did a crap job on it.

I believe the half shafts go THROUGH the oil pan...No way around that!

[Axxe]

Already been done, it somewere on e30.de. They guy did a crap job on it.

I believe the half shafts go THROUGH the oil pan...No way around that!

Dry sump is a way around that, although pricey, and, well, why? AWD = girls and sissies. Manly men drive RWD.

[euroshark]

Dry sump is a way around that, although pricey, and, well, why? AWD = girls and sissies. Manly men drive RWD.

It's about time someone else thought so! RWD is so pure and wonderful, why mess with it? F1 cars are RWD... Enough said.

[Axxe]

I need a shell, so I can make my manly m30 turbo e30 :)