Options when it comes to M52 strokers

[Jean]

I hate to do this since I have already started an M50 2.5 to 3.0L thread, but I ended up with an M52 and would like to confirm available options.

Here is what I found out so far (thanks google):

source http://www.bimmerwerkz.com/forum/3-s...rts-58020.html
"3.0l stroker on the m52 uses an s50 crank, rods, and pistons.

a good alternative is the 2.9l stroker which uses m52 crank, m50/s50(m52 are okay but m50 are "beefier") rods, and s50 +2 overbored diameter pistons. "

source http://forums.bimmerforums.com/forum.../t-477792.html

330i pistons/crank.

Basically I would like to confirm what works and what doesn't. What can I do if I keep the m52 crank and go with other bmw rods or pistons for example.

Thank you!

[2002maniac]

I'd say keep the bottom end stock and put some S52 cams up top. it will make very good power.

[matt]

You have no stroker options that don't involve a new crank.

Forget using "beefier" components. Use the newest, lightest stuff you can find.

[Jean]

Have you guys heard of Terry Tinney? I am considering taking the engine to him for work :)

http://www.terrytinney.com/

[1fastcosmo]

why not just buy a s52 or s50?im sure it would be cheaper after machine work gaskets assembly etc etc

[Money$hit]

why not just buy a s52 or s50?im sure it would be cheaper after machine work gaskets assembly etc etc

+1.

Ive toyed with the idea of M50 combos, and the common denomonator is the price about equals that of an s50/2.

[Jean]

Because I already have an m52, and I doubt that an s50/52 would be cheaper if the same amount of labor / parts are done on both.

[SpecM]

-I like the idea of using a m54b30 rotating set... 3.0 l w/o having to bore anything, new, light and very advanced coatings, and they will drop right into any m50/m52 block with a 84mm bore.

[318isbmw]

-I like the idea of using a m54b30 rotating set... 3.0 l w/o having to bore anything, new, light and very advanced coatings, and they will drop right into any m50/m52 block with a 84mm bore.

But if you have it all apart, why not bore it and atleast put the crossmesh in while you're doin the work on the motor.
But I agree would be awesome setup w/ custom pistons...

[SpecM]

But if you have it all apart, why not bore it and atleast put the crossmesh in while you're doin the work on the motor.
But I agree would be awesome setup w/ custom pistons...

nah, boreing doesn't add as much as power as you think.

and I bet most BMW less than 30 years old still have "crossmech" walls

[1fastcosmo]

Because I already have an m52, and I doubt that an s50/52 would be cheaper if the same amount of labor / parts are done on both.

you can find a s50 or s52 for less than 2.you'll spend more than that when its all said and done with machine work or whatever.Nickle and dime stuff really adds up

[Jean]

you can find a s50 or s52 for less than 2.you'll spend more than that when its all said and done with machine work or whatever.Nickle and dime stuff really adds up

I know that, but you missed my point. Start with a 2k s50/s52 and take it all apart and have it all cleaned up etc and in the end it will cost you more vs. the same job with m50/m52 as you have a little bit of headstart offset by the price difference of the m52 vs s50/s52...

I would rather have a 100% working and fresh m52 for the price of an 'unknown' condition s50/s52 is what i am trying to say i guess.

imho

[PiercedE30]

Yea, I think I spent about 5-6k on my engine build.

[Jean]

It's worth it when it's done right :) Reliability = key.

[AL GReeNeRy]

-I like the idea of using a m54b30 rotating set... 3.0 l w/o having to bore anything, new, light and very advanced coatings, and they will drop right into any m50/m52 block with a 84mm bore.

is that 3.0 starting from an m50 block or m52 block? or are they same? whats it take to get an m52 block to s52 spec?