While I do appreciate the technical aspects of why you cannot use Alusil cylinders with pistons expecting Nikasil...the reality is it happened and I inherited the problem. That is not by any means intended to be a smart-a$$ remark...I asked for and appreciate the feedback. I called Cosworth today and talked to a technical guy who wants to see pics of the damage. I will send them to him along with the part #s to see what the actual CR was intended to be. Which leads to the next question. My heads have been cut...by how much, I am not sure. I stated 3.5 mms, but that is this distance
Can someone measure a stock 3.0 head to get the distance from the bottom of the straight-edge to the top of the dome?
I sat with Grady on Saturday and compared it to a 935 head...and the difference was 3.5 mm. But a 935 head is different than a stock 3.0 head. My chain housings have been cut, but the cams were not centered in the seal...off by maybe 1mm. When the engine goes back together I will trial assemble the pistons and cylinders and heads with the cam towers and measure the deck height and valve clearance...the see how much more I will need to machine off the chain housings to center the cams in the seals. What is the best source for oversize idler arm sprockets cause I am probably going to need a couple?
Thanks guys
Speedo