BMW M50/M52 TURBO BUILD.

[brad.dyer 0]

Hi, I'm planning on building the classic M50 Iron block turbo engine. After much research and conversations, I've got various routes to go down and wondered if anyone had successfully done any of them. I have a full M50 engine, and full M52 engine sat ready.

Ive been told that commonly the M50 blocks are stripped to a bare block and then built back up with all M52 internals, then chuck on all turbo related parts. I then got told to build the above but with an M54 crank and make it a 3.0 stroker, and then again bolt on the turbo.

Has anyone done either of the above?

No matter what internals go into the M50 block, theyre going to be brand new forged, all ARP head bolts etc etc, so if anyone has any info on which internals are best in the M50 block it would be appreciated

Cheers, Brad.

[_BRS_ 208]

http://bimmersport.co.nz/topic/15684-boost-junky-2nd-saga-m50-t-project/

[richard.pykett 36]

Hi Brad

This is what we are doing for our E21 Group 5 replica (https://www.facebook.com/pages/Elan-Motorsport/662026323873874?tab=public&view). Base engine is a NV M50 and will be doing all of the forged internals for longevity. I gather however that lots of people are getting 500hp+ on stock M50 internals, just with a thick head gasket. A lot will depend on what you want the engine to do. We are keen on a nasty sounding revvy engine and want around 600 flywheel HP and 8000 rpm, so will be sticking with the 2.5 crank for a shorter stroke and running 290 degree cams (I think). Steve Murch knows plenty about these engines and turbo setups and is guiding us with our project. I think Steve's current development engine is all stock internals, but he has a fully built motor waiting to go in. He will know. We thought about the 2.8 crank just from a forged perspective - and they are cheap, but this puts the rod/stroke ratio below 1.7. I understand that there is an advantage to having a larger number in this area.

https://www.facebook.com/pages/Steve-Murch-Motor-Sport-Engineering/255636937679

[Driftit 1964]

Yup talk to Steve Murch. Best way to communicate with him is via the phone. His number is on his bookface page.

Oh and Holset all the way. HX35 for you.

Edited September 15, 2014 by driftit

[brad.dyer 0]

Thanks guys, really appreciate the help. Im simply thinking of forged internals just for piece of mind that it will be near on bullet proof, but if stock can take it then it might be a route I'll take.

I'll have to get in touch with Steve Murch by the sounds of it!

Thanks again

[polley 916]

Really depends on what you're wanting out of it

[brad.dyer 0]

It's going in a sole drifter. Starting to go competative and got fully caged/space famed E36 so basically it will be on the limiter all day long when it's out, so I'm after high WHP and torque figures.

[No name user 379]

got your email Brad ill get back to you shortly

steve

[brad.dyer 0]

Thanks very much

[No name user 379]

Thanks very much

sorry being slack had about 100 messages in back log to get through

[brad.dyer 0]

No problem, sorry about my slow replies, time differences on the other side of the world are never helpful!