+1000 hp S55 big bore project.

[M 4 FUN]

Hello all engine builders. Johnny from Sweden here. My friend is about to have a +1000 hp S55 built by one of Swedens most well known tuning and engine building companys and i help him a bit with what i know about the S55's and where to get the parts he need and so on. We have discussed to go up in cylinder volume and use different liners for this build. Longer stroke is not our goal but bigger bore together with different rods and pistons of course. The company that will take care of the build of the engine is well known in the Rallycross world and very capable of doing the work but we haven't heard of anyone going up in bore on these engines. Has anyone done this and if so, where do we get the right liners for such a build? I am not interested in 1000 comments from people who think they know, only facts from serious engine builders or suppliers of these parts if available. Thanks!

Johnny.

[MR RIZK]

https://www.bimmerpost.com/forums/sh...php?p=25105845