What does it take to get an N/A M30 to 300hp?

[MrK]

Pretty much the thread title...

I was thinking wild cam, piggyback, headers, raised compression, adjustable cam gear, and perhaps a MAF swap.

Anybody think that'd be enough for 300hp at the crank? And if not, what else do you think may be required?

[Mystikal]

An S38.

-Jay

[euroshark]

You CAN hit 300hp on an M30, but it's a lot of work. Everything you listed is good, and it may get you close. You are probably going to need in the region of 11:1 compression and a 290+ cam though. I've only seen two NA M30s Ive seen making over 300hp (street cars mind you). One was an M90 that was bored to 94mm and given an S38 crank to make it a little over 3.6 liters, had 11:1 compression, a 304 Gr.A cam, and triple Webers. It made around 330hp, the other one was a 3.5 with unknown specs and big ITBs.

[MrK]

Sarcasm: Thanks Jay, very helpful.

Non-sarcasm: Thanks Euroshark, I had a 299 cam and 11:1 compression in mind, so I suppose with a little luck and a lot of tuning I could touch 300hp.

[bimmer_adam69]

why no tcd s1 non intercooled kit???? is it not a very reliable kit??? wouldnt that be cheaper??? or do you not like turbo setups??? if not totally cool..just wondering the reasoning?

[Garageaholic]

I have the stage I TCD kit in my car, as most of you know. I am nothing shy of completely satisfied with this kit. and is completely bolt on for $3800. Give it 7.5psi non intercooled with factory internals and you'd hit 300rwhp.

why not that? I know the title of the thread is "N/A M30", but why is it not an option for you?

[bimmer_adam69]

hey good to hear feed back on the s1 kit

sorry to turn this thread into a turbo talk guys just curious...

maybe he can do all these performance mods for under 3800??

and frank...have any pics of the kit?? id love to see em:D

[bmw335isturbo]

http://memimage.cardomain.net/member_images/5/web/629000-629999/629515_70.jpg

Or

http://www.turbochargingdynamics.com/

todd has pics

[MrK]

The N/A part is just a personal preference I have. I know turbo is THE way to go with M30s, but the M30 is a descendent of the M88, one of the great N/A engines of its time back in the day, so I figured it would be cool to have a high-revving N/A monster run with stage 1 turbo cars :)

And thanks for all the feedback so far guys, both FI and N/A. Info is good, in all its forms :D

[bimmer_adam69]

nice! well good luck with your future modding thanks for the extra pics guys

[E30 Cabrio]

How much work was it and how difficult to bolt it on?

I have the stage I TCD kit in my car, as most of you know. I am nothing shy of completely satisfied with this kit. and is completely bolt on for $3800. Give it 7.5psi non intercooled with factory internals and you'd hit 300rwhp.

why not that? I know the title of the thread is "N/A M30", but why is it not an option for you?

[george graves]

You will get a lot more info if you also post at mye28.com. Good guy there i tell you!!

The m30b35 (much like the m20b25) is very well laid out from the factory. You can make small tweaks, but nothing HUGE...there really is no weak link you can fix and all of the sudden be making 50 more HP...

If I ever even *think* of pulling my block on my e30m30 - I wouldn't do it with out getting my hands on a euro "L-block" (called so cause it has the letter "L" on the block...)

Basically a big bore short stroke 3.5L m30. Now pay attention to *short stroke* part, that is what will REALLY make a m30 come alive. I've driven a e28 that has a hand built "l-block" and it was a completly different motor then a m30 in many ways. Still a good amount of TQ - but it SOUNDED awesome - reved so free and wild - and cherished the high revs. It just spins like a top. I drove that car for a month (M3 ryan's old e28 - now long gone...motor took a hit at the track from a money shift - 10k RPM's will do that to a m30!!!)

Give it 7.5psi non intercooled with factory internals and you'd hit 300rwhp.

I'm sorry - but that just makes my mouth water like a drunken sailer at a peeler bar. Keep in mind I know almost nothing about turboing a car...Only worked on them - 7.5 PSi is NOTHING on a motor like a m30. It won't even notice it. You might take 20-40k mile off the life of the motor, but hell - that's nothing on a honest 300-400k motor(depending on oil changes, coolant flushes, overheating and cracking, ect...)

And folks that 7.5 PSI NON-INTERCOOLED...wow - It almost sounds too good to be true...

[gstuning]

An M30 will definitly need ITB´s or at least a new intake with proper intake tuned lenght runners.

Then a seriosuly wild cam, high lift,
11:1 compression will do it,
purpose build exhaust headers and a proper tuned exhaust.
Port job on the head for sure as well.

The idea is to make 300hp as low as possible. wich is about 6500-7000rpm
no way less then that.

[euroshark]

Haha, I also like the sound of a low boost turbo M30 making in the arena of 300rwhp... As nice as a well built NA motor is to drive, M30s take to turbo charging very well. TCDs kit is so well sorted that the guys at MyE28.com claim that the car drives just like it's stock, but with double the power and torque any time you want it. That makes me a little hard

[ldsbeaker]

but dang.. I don't want 300 hp.. I want 400!