Quote:
Originally Posted by irax
The fb25 and fa20 blocks are exactly the same in outside dimensions. Its just a matter of swapping cranks and con rods. Fb25 94mm pistons with 86mm stroke equates to 2.4 litre.
FA20 heads on an FB25 block will raise the compression a little bit. Thats why i said 10.5:1
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FB25B doesn't have direct injection and has 10.5:1 compression. FB25D has direct injection and 12.0:1 compression. It sounds like you are talking about using the FA25B, so are you suggesting ditching the direct injection system? Have you seen the differences between the FA20F and FA20D blocks? They look different in many ways. I doubt even the FA24D will be identical, but it has the best chance.
https://dsportmag.com/the-tech/educa...s-of-the-fa20/