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      07-20-2019, 05:37 AM   #45
drrust
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Drives: E90 M3 DCT Sedan
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Originally Posted by Lucrecio84 View Post
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Originally Posted by jcolley View Post
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Originally Posted by Lucrecio84 View Post
Yea I'm about 30k deep on the engine build. Didn't stroke it because removing material from the cylinder walls isn't a good idea when adding boost to s65 block. We dropped compression to 10.5:1
Why would you need to bore the cylinders to stroke it? I'm assuming the alusil was prepped for new rings anyway with new pistons, no?
I'm not sure. How else can you stroke a motor without boring the cylinders? I didn't build it myself so not too familiar with the specifics.
One can stroke a motor with a different crank shaft. It would allow the pistons to travel farther. If I recall correctly one would get a 4.2 L motor with the S65 block.
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