H22A, H22A1, H22A4 Cylnder heads
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From: USA
H22A, H22A1, H22A4 Cylnder heads
Is there a difference between ports or any other thing on these heads? Like on B and D series heads, they have differences in port shape and flow. I just had a H22A head and never seen a H22A1 or H22A4 to compare.
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From: Betonwüsten, USA
Re: (LudeHatchH22a)
I know that the distributers are different for the JDM/OBDI/OBDII. I doubt that there are really that many differences in the castings, i.e. one really should not flow that much better than the other.
the Pirate.
the Pirate.
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From: East Village, NYC
Re: H22A, H22A1, H22A4 Cylnder heads (ki11a8ee)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ki11a8ee »</TD></TR><TR><TD CLASS="quote">I know that the 97-up sh heads have a little more aggressive cams.</TD></TR></TABLE>
wrong. same part numbers as a base.
wrong. same part numbers as a base.
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From: East Village, NYC
Re: H22A, H22A1, H22A4 Cylnder heads (PrecisionH23a)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrecisionH23a »</TD></TR><TR><TD CLASS="quote">Does anyone have any flow bench charts/sheets of a stock H series head?</TD></TR></TABLE>
Keep in mind all benches are different
Keep in mind all benches are different
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Re: H22A, H22A1, H22A4 Cylnder heads (satan_srv)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv »</TD></TR><TR><TD CLASS="quote">
wrong. same part numbers as a base.</TD></TR></TABLE>
Dunno about the part numbers, but according to my helms, the primary and secondary lobes are the same, but the middle lobes are different.
VTEC Lobe
Base SH
IN: 36.856 37.229
EX: 36.323 36.704
The valve spring free lengths are different, too.
Base 1 Base 2 SH
IN
outer 45.16 45.76 40.01
inner 41.78 41.75 43.61
EX
outer 46.72 46.74 44.58
inner 39.32 39.28 41.07
Of course, the helms also fails to mention the differences in the cranks between 97 and 98-on cars, and just lists every H22 as having 50mm mains.
wrong. same part numbers as a base.</TD></TR></TABLE>
Dunno about the part numbers, but according to my helms, the primary and secondary lobes are the same, but the middle lobes are different.
VTEC Lobe
Base SHIN: 36.856 37.229
EX: 36.323 36.704
The valve spring free lengths are different, too.
Base 1 Base 2 SHIN
outer 45.16
45.76 40.01inner 41.78
41.75 43.61 EX
outer 46.72
46.74 44.58inner 39.32
39.28 41.07Of course, the helms also fails to mention the differences in the cranks between 97 and 98-on cars, and just lists every H22 as having 50mm mains.
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