The Poor Man's M50 3.0l Stroker Dyno Numbers are in.

[AWDBOB]

Aren't you doing a M52?

I'm doing the poor man's 3L stroker- OBD2 M52 style. I've got M54b30 internals to drop into the M52- they have the same bore, M54b30 just has a longer stroke. It's actually easier on the M52 block vs M50 because you don't have to mess with the timing trigger wheel/gear on the M54 crank.

I've got S52 cams and an M50 mani.

After selling M52 guts it's a wash with purchasing the b30 rotating assembly, so I get .2L of displacement for only a little extra work.

It'll be fun to see what it makes.

https://www.youtube.com/watch?v=VT5v6CrGStg

[stonea]

I'm building one right meow. I'll post my results here when I'm all done.

Aren't you doing a M52?

[AWDBOB]

I'm building one right meow. I'll post my results here when I'm all done.

[Wishno87]

Any new developments on this?

[Jib05]

^ I like that. Is that an m54 head? Also are you welding that adapter to the ITBs? My old levin had ITBs, miss that noise.

[RobertK]

OBTW: You need to get together with this guy:

http://www.r3vlimited.com/board/showthread.php?t=305953

Already a step ahead of that:

Which trans and diff combo is in this car?

IIRC he has a G260 and 3.73 limited slip.

[Kingb]

Which trans and diff combo is in this car?

[The Dark Side of Will]

OBTW: You need to get together with this guy:

http://www.r3vlimited.com/board/showthread.php?t=305953

[The Dark Side of Will]

M50 deck height is higher than a M54 so the best route on a 3.0l stroker build would be to have a machine shop deck the block a few mm.

Do you have the relative deck height numbers handy?

[tim12vgti]

i recently bought a 92 touring with an almost identical build. M50 nv block with m54 pistons, rods and crank aswell as s52 cams. Vanos was added. It sounds great but its a heavy car and feels slow compaired to my vr6. Does anyone know a good place for tuning in south florida?

[Jib05]

Its still a pretty good deal if you are looking at refreshing your motor before doing a swap I guess, but only if you get a good deal for it all. But then again in the US s50/s52 still looks to be a better deal.

[303e30]

The m54 setup is under-square and the s50 is square, maybe that accounts for less power ? I bet the stroker has a flatter torque curve than a USs50 though.

[RobertK]

Ok.
I'm thinking of converting to Vanos as well. Did you notice any differences with toothed crank pulley? Can I use a non vanos pulley on vanos block?

Yes, there is a difference in the crank dampner, the gap in the teeth are about 45 degrees different so you will need a VANOS crank dampner and pulley to complete the conversion. The Vanos plunger and intake cam is the only thing that different.

[Paradox]

Ok.
I'm thinking of converting to Vanos as well. Did you notice any differences with toothed crank pulley? Can I use a non vanos pulley on vanos block?

[RobertK]

Why did you use a non vanos head with a vanos block and then convert it to run vanos?
Parts availability?

Pretty much.. and double valve springs are nice but we built it on his budget and parts he randomly pulled.