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H22A2 exhaust to F20A4

 
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Old 08-26-2014, 09:31 AM
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H22A2 exhaust to F20A4

Hy,

I have BB9 Prelude, F20A4 engine (SOHC).

This engine serial have 4-1 exhaust manifold.

At home, I have some H22 4-2-1 complete exhaust manifolds, totaly 3 pieces (H22A2, H22A4, H22A7).

I know that i can't use this manifold on my F20, because of different bolt patterns.

But what will happens if I managed to put that H22 4-2-1 manifold to my F20?

Little work on bolt patterns plate and it can it be done.

Is 4-2-1- manifold from H23 engine similar to H22 4-2-1 manifold? I mean on fluids and gasses....
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Old 08-27-2014, 04:42 PM
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Re: H22A2 exhaust to F20A4

You talking doc H23, right?

My son is using the dc header from his H22 onto his H23 doc. Same bolt pattern.
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Old 08-28-2014, 09:02 AM
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Re: H22A2 exhaust to F20A4

No, I want to use H22 4-2-1 header on my F20A4 engine...It is not same bolt pattern, because there is a little difference in second and third cilinder (middle).

But it can be done to be usable, just need to do need new plate with bolt patterns and weld header to plate.

But the question is - will 4-2-1 header from H22 be a better than 4-1 header at f20a4 engine?

I know that 4-2-1 header from H23 is very better then stock 4-1, but I don't know difference btw h22 and h23 4-2-1 header in sizes and ...
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