M30 ????

[bmw335ist]

Pat P has every one knows him as e34 biturbo has 600+ hp and so far he has broken a rocker arm witch is not that big of an issue concerting other parts that could break and it is not like he takes it easy on the motor either he has proven that the m30 engine can handle a lot.
Turbo charging dynamics has a junk yard stock e28 motor running their stage 2 turbo kit soon to be running 20 psi at 400 RWHP witch is amazing so in my opinion the m30 is very strong and has the displacement for big power and long engine life.

[kylebes1]

As with doing a turbo m20 part of it is doing something different. You rarely see a turbo anything, nor do you so a m30 e30, so how much better would a turbo m30 e30 be?

I thnk the m30 e30 alone would be very cool, but a turbo along with it? Completely awesome!

the m30 had a 8:1 compression it is beggin for a turbo! And I thnk some 7 series cars come with one factory, right?

[NWMF]

the reason i ask is because i have an 325 eta in the car right now. but i ran into a 86 325i block that look real good and seems to have been rebuilt i also took off the getrag tranny. i want to run a turbo. this is what im thinking m30 were do i get one? and how much are they? or would an "i" head fit an "e" block then turbo it? or turbo the "i"? thanks im the one who posted the 250hp 325i thread. so 250 hp is what i would like to put at the wheels at my lsd 410 i belive

[iXer]

That's like 300 hp at the crank, I don't see any reason to go M30 on your car for that reason. You would have to boost about 0.8 bar with a M20B25 'i' engine to get 240 rwhp. With a turbo cam and matched turbo and charge cooling you would need to boost even less.

/Mattias

[NWMF]

do "i" heads fit E blocks. bc doesnt that work better for a turbo setup

[1985bmw325e]

:stupid:

[Bavarian3]

I head on the bottom end E do fit but that doesn't mean 'better' for turbo....

What are you looking for?

[NWMF]

I head on the bottom end E do fit but that doesn't mean 'better' for turbo....

What are you looking for?

well ......... really the best turbo set up.

[1985bmw325e]

everyone has told u the best turbo set-up.

FIND an m30 engine then turbo that shit.

you can turbo an m20, however if u are looking to transform your e30 into a turbo monster then go find an m30 now.


last months issue of european cars ( i think that's what the magazine is called), the last page had a guy who lived in florida who owned an e30 and an e32 m5, both m30 engines that were turbo'd the fuck out. the e30 m3 was pushing 520 hp with 793 lb./ft while the m5 pushed i believe 530 hp with 800+lb./ft

his cars were fucking nice too

[Bavarian3]

a) visit www.boostjunky.com
b) That was Pat P's beast
c) There is no E32 M5 and It wasn't a M5. He sold that for a white M3, which is now mine.
d) M30 + Turbo = Cheap = Reliable Power = Not so hard to work on the engines if you know the technology

The best turbo set up, can cost you if you want to do it the 'correct' way but that doesn't mean its the best.

[Bokes]

i've been dreaming of an m30 + turbo swap for nearly two years now.

the m30 is a great engine, 200k miles on one isnt anything to worry about either. they are total beasts.

[george graves]

I'm doing the m30 swap for many reasons - mostly displacement....Can't beat the grunt of 3.5L...

Also - I paid $800 shipped (from OR to SoCal) for my 90k miles m30 motor. Alot of the m30 powered cars have been pampered (e24's, e32's, even some e34's) - and you can use a motor from a automatic car. Try finding a low miles m20 that's been pampered....

I was going to build a 2.8L m20 - but the ballpark cost would be $$$. I'm doing this whole swap for around $3500 (could be a lot cheaper if you can find a donor car to pull the motor then part out.) Plus I'll have some parts off my m20 to sell, ecu, tranny, manifolds, ICV, afm, cam, oil pan, ect....

It just didn't make sence to rebuild a 235k miles m20 and spend ~$1000 on custom pistons, when I could get a compleate 3.5L for about the same price

Don't get me wrong. I think the 24v swap is great. But your adding a good amount of weight there too. And take a look at Erik Lucas(sp?) dyno charts...not what you would expect for the money involved. Right?

Let me also remind you guys of this - it's torque that makes a car fast, not so much HP. HP is just a measurment of the cars ability to make torque over the rev band (or something like that) There is a great article that was in the roundel, it's also in the BMW enthusist(spelling?) companion guide that explains what makes cars fast...it's worth a read.

So how fast is a e30 with a m30? well it's faster than a e30 m3 that for sure, and it's faster than a e36 m3. (but not as fast as a e46 m3)

Turbo m30? Dam - how fast do you want to go? E30 are light cars - a full on turbo M30 would be over the top maby? I'm acutally thinking of a SC set up. Maby use a ford thunderbird super charger. Why? Easy to take on and off for a smog check or what not. Or maby NOS...who knows. M30's are some strong mother f-ers. Guys throw turbos on 200k miles m30's all the time with out batting a eye.

As fot the weight of the m30 motor, yea, that is a valid point. But a CF hood takes care of most of it.

I respect Old Peter McH - I've been reading about his cars since I was 17. But sometimes he says the stupidest things.... 8)

George Graves

[808BMW]

Let me also remind you guys of this - it's torque that makes a car fast, not so much HP. HP is just a measurment of the cars ability to make torque over the rev band (or something like that) There is a great article that was in the roundel, it's also in the BMW enthusist(spelling?) companion guide that explains what makes cars fast...it's worth a read.

Torque makes a car fast while your daily driving, hp is where the real fun is :P

HP lets you take advantage of gearing. Compare an e30 m3 to a diesel truck, which is more fun?

[george graves]

Ohhh - I'm still trying to figure this Hp vs torque out myself...so not claiming to be a expert - but gald if someone else could explain better....

---- By your logic - the truck would be more fun

torque = fast = fun ....

[jgentile]

And I thnk some 7 series cars come with one factory, right?

ya one did, it was a 3.5 litre m30, but they called it a 745i my dad has one, but its crashed in the front so its sut a turn around car, he said soemthing about the turbo almost hurting the car because the compression with the engine and turbo kit is a bad combination... but the car is awesome, it has extra things like power rear seats, no other cars had that back then