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I got excited last night because I know someone who has a refreshed S52 block, but now I see you're looking for a S50 block... booo
He can just sleeve those 3 cylinders there is nothing wrong with doing that. I know many people that have done it and couple that are running sleeved s5x's in race cars with zero issues. plus sleeving a cyl is like 60 a pop. that will be far cheaper then a new rotating assembly
1989 325isl1984 euro 320il1970 2002 Racecar 1991 318i 4dr slick top
I would even be tempted to use a M52 crank if you could and make it a real overbore setup with a 86.4mm bore and 84mm stroke. Still would be considered a 3L (2955cc)
Simon
Current Cars:
-1999 996.1 911 4/98 3.8L 6-Speed, 21st Century Beetle Make R3V Great Again -2020
I would even be tempted to use a M52 crank if you could and make it a real overbore setup with a 86.4mm bore and 84mm stroke. Still would be considered a 3L (2955cc)
s52 pistons with an s50 crank will lead to very low compression, the wrist pin height is higher on s52 pistons due to longer crank throw.
I haven't looked at nonstandard builds yet.. not sure that there's a convenient piston that I can use with an 84mm stroke crank.
yup, e30 M3 rears. got my hands on a set of caliper carriers and didn't see a need to figure out something bigger.
engine updates, got it torn down. here's some photos from the process.
an example of the scoring i'm dealing with:
In good news, I traded the S50 crank to Eric for his S52 crank and pistons, and arranged with Rebello to get the block boiled and bored out to 86.4mm, which should be happening in the next few weeks.
In the meantime, I am looking at bottom end bearings. Glyco's ok, yeah?
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