Ok I've been tossing this around in my head for a few weeks now and want some input.
Lets say I'm working on a turbo build.
F22Ax block, forged internals, all that good stuff to maintain and keep it reliable for moderate to high boost.
Block will be bored out to 86mm to bump displacement up to a proper 2.2L and because of the new pistons.
Now that the block is board out to 86mm, the bottom of the F22Ax head's combustion chamber is still at the 85mm, thus causing this sort of situation:
Not ideal since the bore of the block and the head differ in size, not a lot, but it's enough that I don't like it nor would proceed with the build.
So what options are there? Obviously one option is to machine the head so that it matches the bore of the block... but I was thinking of another solution.
Why not use the head of a F23A5? It's SOHC, Non-VTEC, AND already has a head that matches it's 86mm bore. Thus the F23A5 head is ready to go with no machining needed to match the 86mm bore of the F22Ax block.
Yes I know that particular head supposedly doesn't flow as well, but I don't think it's a big issue since it will be turboed.
I'm not one to Frankenstein my way through a build, far from it, but I am looking at every possible alternative to this issue.
Input? Thoughts?
Lets say I'm working on a turbo build.
F22Ax block, forged internals, all that good stuff to maintain and keep it reliable for moderate to high boost.
Block will be bored out to 86mm to bump displacement up to a proper 2.2L and because of the new pistons.
Now that the block is board out to 86mm, the bottom of the F22Ax head's combustion chamber is still at the 85mm, thus causing this sort of situation:
Not ideal since the bore of the block and the head differ in size, not a lot, but it's enough that I don't like it nor would proceed with the build.
So what options are there? Obviously one option is to machine the head so that it matches the bore of the block... but I was thinking of another solution.
Why not use the head of a F23A5? It's SOHC, Non-VTEC, AND already has a head that matches it's 86mm bore. Thus the F23A5 head is ready to go with no machining needed to match the 86mm bore of the F22Ax block.
Yes I know that particular head supposedly doesn't flow as well, but I don't think it's a big issue since it will be turboed.
I'm not one to Frankenstein my way through a build, far from it, but I am looking at every possible alternative to this issue.
Input? Thoughts?
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