m42 head w/m44 block - United Bimmer Community

**e30boarder** · 08-06-2005, 03:19 PM

Ive been thinkin about throwing a supercharger on my car. I have a problem... the m42 block doesnt have a knock sensor ( i think thats what its called) The supercharger I want will blow my engine without it. Its meant for the e36 models I think. So I was thinking of finding an m44 block, but I want to keep my old head. When I bought the car it had overheated and cracked the head. I got it welded and then ported and polished. I'd rather keep my old head than start over again. Im pretty sure the heads match, but I thought I would ask and get some different opinions... thnx

Ill be pushing over 300 horses if it works

**DEATH2000** · 08-06-2005, 03:33 PM

Welcome to the Forums!!!

If your blocks been cracked and re-welded im not sure a supercharger is good for it. I recomend since your supercharging it get a new block and head. What supercharger are you getting for it?

**e30boarder** · 08-06-2005, 03:36 PM

I found a guy down in Atlanta that makes a nice supercharger that runs off stock pullies and everything... I cant remember what its called... have his site saved somewheres on my other comp. But its gonna take me awhile to get the money together and everything... so its not likes it a big deal. I just wanted to get some ideas

**DEATH2000** · 08-06-2005, 04:01 PM

I think the company you mean is Downing Atlanta but im not sure. They have a really nice kit for the 4cyl BMW's for not alot of money. Supposed to take the stock engine to 200hp.

**e30boarder** · 08-06-2005, 04:01 PM

yeah thats it.... my bad

**e30boarder** · 08-06-2005, 04:02 PM

my engines almost up to 200 already so it would be a pretty nice set up

**DEATH2000** · 08-06-2005, 04:20 PM

Thats kool, what do u have on there already? And make sure if u get a supercharger your carefull, cause u dont wanna ruin 2 BMW's

**e30boarder** · 08-06-2005, 04:26 PM

well is just ordered a cold air intake for the car... that should be in sometime soon. i got the guy that worked on my head to match the intake and i got a full exhaust. the m42 comes with a stock header too so i suppose that helps. and theres a guy out in california who worked on my cams. its pretty quick for a four banger. im loving the gas mileage right about now too

**DEATH2000** · 08-06-2005, 04:37 PM

200hp is really good for a four banger, unless its the E30 M3 4-banger cause that comes stock with 200hp. But what sucks is the engine alone is $20,000 CDN and the tranny is $6,900

**e30boarder** · 08-06-2005, 04:42 PM

yeah... i want an e30 m3 so bad. i dont wanna knock the other m3s but i think the e30 looks the best. the wide body look is awesome.

one day ill have one.... i hope

**hamann318is** · 08-06-2005, 07:06 PM

The DAS doesn't fit the E30 M42 because of the pully system and the lack of knock sensors. M44s are crap, don't get one. Get the E36 M42 block as it's the same internals, just different externals.

**munichman** · 08-06-2005, 08:14 PM

what have you done to a M42 to push 200hp

**e30boarder** · 08-07-2005, 12:03 AM

i never said it had 200... i dont know how much horses it has. im just making a wild guess. read my mod list

**DEATH2000** · 08-07-2005, 12:20 AM

Stock on the M42 is like 135-140hp right?

**e30boarder** · 08-07-2005, 12:33 AM

yep.... 134 according to the bmw manual

**Chris** · 08-07-2005, 12:33 AM

downing atlanta makes sweet superchargers. some guy had one on a z3 at the andretti meet a couple weeks ago. it was sweet. his car was soo hooked up he had alcohol injection. he had chase cam hidden in his custome front bumpers (he had SWEET splitters complete with control arms so you know they were functional, not just cosmetic.) custom roundels all around. custom interior.

back on topic.... i've heard good things about downing atlanta

**e30boarder** · 08-07-2005, 12:35 AM

yeah... im wanting to get one for my car... ill have to figure something out for it

**hamann318is** · 08-07-2005, 01:25 PM

Quote:

Originally Posted by e30boarder

yeah... im wanting to get one for my car... ill have to figure something out for it

Just by a complete M42 from a E36. Make sure the M42 has 2 pullies, and it's not an M44. That's what I plan on doing.

**e30boarder** · 08-07-2005, 01:28 PM

I thought all e36 had the m44??

**hamann318is** · 08-07-2005, 01:36 PM

Quote:

Originally Posted by e30boarder

I thought all e36 had the m44??

Nope, the change over year was 1996. The shitty M44 was BMWs answer to a OBDII compliant M42.