Originally posted by ssmumich00:
so if the 2.5L only comes in +1.25mm, that would increase cr from 10.5:1 to like 11:1??? That sounds like a great NA2.5L idea, anyone try this??


Ummm...

Stock compression is 9.7:1
Most SVT's are 10:1
00 SVT is 10.25:1 but smaller bore to begin with. (81.67mm vs 82.4mm)

You may want to double check that +1.25mm is for the old bore size, not the new smaller bore size.
Also you have to check if the pistons are for the stock engine or if they are the domed SVT pistons.

Those are some very big "ifs".


BTW - The jump from standard to +1mm on the 3L piston bore gives about another 2 tenths of compression.
So on the stock 2.5L piston a +1.25mm jump would not even reach 10:1

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.