Dx head on Hf block?
05-21-2004, 09:16 AM
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this piece was done @ www.hondaswap.com
why would the gas prices affect you dropping in a b16? i get the same if not better gas milage in my 91 hb si than my old 88 dx hatch with a stock motor. just something to think about.
why would the gas prices affect you dropping in a b16? i get the same if not better gas milage in my 91 hb si than my old 88 dx hatch with a stock motor. just something to think about.
05-22-2004, 09:26 AM
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They overlook one major thing is that article...the HF pistons only have Eight valves, meaning that the pistons only have two reliefs per piston. I had the chance to do this sort of swap and it won't work, you need to have four relifs per piston to throw a 16 valve head on the block. :af:
05-22-2004, 07:32 PM
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Originally Posted by SonicGSR98
They overlook one major thing is that article...the HF pistons only have Eight valves, meaning that the pistons only have two reliefs per piston. I had the chance to do this sort of swap and it won't work, you need to have four relifs per piston to throw a 16 valve head on the block. :af:
05-24-2004, 05:28 AM
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Originally Posted by SonicGSR98
They overlook one major thing is that article...the HF pistons only have Eight valves, meaning that the pistons only have two reliefs per piston.
05-25-2004, 06:48 AM
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Originally Posted by Kai
Are you sure, as in have you had one open? I had an 8v D15B8 open and to my suprise it had 16 valve reliefs. :dunno:
on a side note: I have heard (only speculation) the the piston on the HF motor does not interfere with the valves if using a 16 valve head. But I'm not one to play with such fire. I'd rather have the reliefs there just in case ya know?
05-26-2004, 12:22 AM
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Originally Posted by SonicGSR98
yes, on the 89 USDM HF that I had the head off of, there were only 8 total valve reliefs.
I still don't believe an HF/16v hybrid will come anywhere close to a 14 second 1/4 though.
