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JDM H22 head

 
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Old 06-19-2012, 08:38 PM
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JDM H22 head

I just bought what I was told was a Port and Polished JDM H22 head. What size should the intake and exhaust ports be stock? Is there anyway to tell if it is a true jdm head?
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Old 06-20-2012, 01:59 AM
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Re: JDM H22 head

dont you have any paper from the p&p company?
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Old 06-21-2012, 02:42 AM
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Re: JDM H22 head

I bought it off of craigslist and it turns out its just a P13 USDM Head. The only good thing is when I took it to my Machine shop he said it has a good port and polish job done to it. How much will that help my stock h22a4 with a skunk 2 intake
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Old 06-21-2012, 03:16 AM
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Re: JDM H22 head

Quote:
Originally Posted by 98PreludeH22 View Post
I bought it off of craigslist and it turns out its just a P13 USDM Head.
there is no difference between us/jdm heads, jdm just have slight better cams

Quote:
Originally Posted by 98PreludeH22 View Post
How much will that help my stock h22a4 with a skunk 2 intake
some, not much

reshaping combustion chambers would be more effective than just IN side porting (dont know have they done that to your new head)

it will help you the most IF your whole engine would be fully built

Last edited by TypeT; 06-21-2012 at 03:30 AM.
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Old 06-21-2012, 07:28 AM
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Re: JDM H22 head

^^ The I think the cams are the same (well assuming USDM is the same as UKDM). The only H22's to have better cams were the red tops with 11:1 CR (H22a7, H22a8, Type-S / S-SPEC H22a).
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UKDM RHD 2000 2.2 VTi 4WS BB8 H22a8 - All Motor JDM RHD 1993 2.2 SI VTEC 2WS BB4 H22a
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Old 06-21-2012, 08:01 AM
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Re: JDM H22 head

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Originally Posted by merlin View Post
^^ The I think the cams are the same (well assuming USDM is the same as UKDM). The only H22's to have better cams were the red tops with 11:1 CR (H22a7, H22a8, Type-S / S-SPEC H22a).
BrianCrower.com | RunBC.com // Honda // H22 / H22A

not the same

Last edited by TypeT; 06-21-2012 at 08:04 AM.
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Old 06-21-2012, 08:34 AM
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Re: JDM H22 head

Sorry to drag this slightly off topic (I think the OP has what he needs anyway). Either the info Brian Crower lists is wrong or USDM cams are different to every other region. Regular H22a JDM cams are the same as UKDM & EUDM, the heads are the same. All P13 heads in Japan, UK, and Europe are the same excluding the H22a8. This is confirmed by a Honda (and in particular H22) specialist in the UK.

It could esily be that the H22a1 is different, I just didnt think it to be likely. What casts doubt is that the BC list is incomplete and has wrong engine codes in the paragraph and list.
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Last edited by merlin; 06-21-2012 at 08:45 AM.
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Old 06-21-2012, 04:12 PM
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Re: JDM H22 head

I am planning on doing a turbo build does anyone know the best place to get all the parts I will need at a decent price? Pistons, rings, connecting rods and full gasket kits?
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Old 06-22-2012, 08:04 AM
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Re: JDM H22 head

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Originally Posted by 98PreludeH22 View Post
I am planning on doing a turbo build does anyone know the best place to get all the parts I will need at a decent price? Pistons, rings, connecting rods and full gasket kits?
horsepower freaks?
rosko?
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