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B20 head on B18 block???

Old 03-28-2003, 03:47 PM
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Default B20 head on B18 block???

Ok, I was just wondering if the porting is the same for both the b20 and the b18 cause I have a b20 head I can put on my b18a to lower comp. to run more boost. Would this work? I was thinking I was gonna run 9lbs on the b18 but now I might run 11-12 with the b20 head if it lowers comp. Thanks.
Old 03-30-2003, 04:27 AM
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Default Re: B20 head on B18 block??? (AudioXtremes)

anyone???
Old 03-30-2003, 06:04 PM
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Default Re: B20 head on B18 block??? (AudioXtremes)

in theory it will work I was thinking the same thing just make sure you get the right head gasket
Old 03-30-2003, 06:18 PM
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Default Re: B20 head on B18 block??? (JDMPARTS4U)

The b20 head is EXACTLY the same as the b18. Even the dome and head gasket is 81mm just like the b18 head.
Old 03-30-2003, 07:02 PM
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Default Re: B20 head on B18 block??? (UberTeg)

The b20 head is EXACTLY the same as the b18. Even the dome and head gasket is 81mm just like the b18 head.
Yes. no difference. I believe the casting numbers on the head are even the same.
Old 03-31-2003, 04:30 AM
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Default Re: B20 head on B18 block??? (Speed PHreak)

I thought the b20 was 84mm? am I wrong?
Old 03-31-2003, 05:11 AM
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Default Re: B20 head on B18 block??? (AudioXtremes)

Same exact head.. Yes, wrong..
Old 03-31-2003, 07:19 AM
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Default Re: B20 head on B18 block??? (UberTeg)

The b20 head is EXACTLY the same as the b18. Even the dome and head gasket is 81mm just like the b18 head.
i thougth the same thing.
Old 03-31-2003, 02:47 PM
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Default Re: B20 head on B18 block??? (BoostedSi)

so you mean the head is not 84mm??? Because the block is 84mm. I know that for a fact!
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