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JINT 11-05-2009 08:46 PM

M30B35 vs M20B25 Problem/reliability wise?
So i'm probably moving onto a 535, never owned an M30, just wanted to ask for common problems with these engines, and also vs. the M20 engine. Anyone has any experience in the M30, please post. THanks.*smoke*

El Gato Liso 11-05-2009 08:49 PM

apparently m30 gots 6 mans with hurcules strength inside

e30_kid89 11-05-2009 09:03 PM

Yep, super easy to work on, cheap ass parts, cheap ass replacement engines:D no gay timing belts and monster torque ANNND guys have reported veryy comparable mileage to the ol' original m20.

Bullet proof bottom endz ftw.

ONLY thing you may have to do if the motor has not been maintained and regular valve adjustments have not been done is a cyl head refresh and a new cam; all cheap!

Edit: another problem you may have is the ability to tame your right foot!:D

lvan 11-05-2009 09:07 PM

Nice maintained M30 in 535i is a baby crocodile when you compare them to M20ish stock. So M30 no timing belt for sure?

Do not forget it still runs on regular as M20.

e30_kid89 11-05-2009 09:09 PM

^for sure, I've had mine open too many times:D

The chain will/should outlast the motor and car. If properly maintained.

msinger 11-05-2009 09:23 PM

i love mine, its insanely fun, torque is unreal, no issues with the engine, only with other things... it tore my stock m20 motor mounts, so you should upgrade to urethane, also try and stop grinning when you drive it......

El Gato Liso 11-05-2009 09:27 PM

oh boy....

...crazy *swap* idea!!!!

this motor is cheap too! i'd be happier with THIS than an m50/52 etc

lvan 11-05-2009 09:34 PM

Thing I don't like, everytime I come over clean E34M30, iT'S automatic.

e30_kid89 11-05-2009 09:35 PM

^^Hate?? I'd love that:) a clean unmolested motor ready to be thrown into a e30!

lvan 11-05-2009 09:39 PM

^ Yeah for sure, but I think he wants an E34 lol. The OP.

JINT 11-05-2009 09:53 PM


Originally Posted by lvan (Post 1362997)
Thing I don't like, everytime I come over clean E34M30, iT'S automatic.

well*mw*...this one is 5spd *love* Thats the only reason i want it!!*rockout*

Duct_Taper 11-05-2009 10:10 PM

I've had my E34 535i 5-spd for 2 and a half years now and love it!

It's been quite reliable - no engine problems at all.

Nick_V 11-05-2009 10:15 PM


Originally Posted by JINT (Post 1363001)
well*mw*...this one is 5spd *love* Thats the only reason i want it!!*rockout*

is it this one??? I couldn't believe this ad when I saw it, so I emailed the guy. He actually had it listed at $6500 at that time. I said what's the catch and he said nothing - he needs money to "get home". Car looks clean and if it's actually legit, you could dump the CRV and make some money back. Plus buddy seems pretty desperate so I'd offer him 3K cash if the car looked ok and he'd prolly take it.*smoke*

ACS_DAN 11-05-2009 10:41 PM

An M30 is nice... but an M60 is even nicer. I think you should find a nice e34 540i... and buy my 5 speed swap.

/shameless plug


lvan 11-05-2009 10:45 PM

^ Yeah but get ready to work out $$$$ for M60 repairs.

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