ntaylor90 10 Report post Posted October 2, 2013 Hi all! I have just come across an m50 block which I picked up yesterday. It's in a really good condition apart from a minuscule lip on the top of the bore, nothing major just from use over time. The m50 is going to be my base for a turbo project I am doing, but what I am wondering is this: I was originally planning an m50 2.8 stroker using the m50 block with everything moved across from the m52b28 and then arp/mls headgasket/front bottom mount, etc. I was going to get the m50 bore re-honed but do you think, with even a tiny lip, that it will need to be rebored to allow for the higher moving piston due to the increased stroke? If this is the case will it be more economical to wait for an entire m50b25 and just turbo that, or rebore the m50 block and continue as planned, and how much is it usually to get a block rebored? The only other thing I am worried about here is that due to the block being slightly worn, a rebore to original standards is impossible due to the wear? Like you can't rebore 84mm if the bore has been worn out to 84.02mm or something? Thank you in advance, Nick Quote Share this post Link to post Share on other sites
thorburn 121 Report post Posted October 3, 2013 Best to talk to the machinist that will be doing the hone. I went through the same thing and was told that if you can feel it with your fingernail your better to bore and go up a piston size. Also the piston doesn't actually go higher. The wrist pin height is lower on the 2.8 pistons Top mount it so you don't need a scavenger pump. Quote Share this post Link to post Share on other sites
