how important is it to port match head/block

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Old May 2, 2003 | 04:43 AM
  #1  
Mr. Vapor's Avatar
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From: GO LEAFS GO, NY, USA
Default how important is it to port match head/block

Ive got my 83mm Darton sleeves which i am going to be putting in my b16, however im wondering....

what are the possible side effects if i do not increase my head chambers to 83mm?

-will this cause hot-spots
-detonation?

can i get away without doing it? i know its the proper way, however money is tight, this is a corner im wondering if i can get around.
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Old May 2, 2003 | 08:39 AM
  #2  
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Default Re: how important is it to port match head/block (Mr. Vapor)

bump
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Old May 2, 2003 | 08:43 AM
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Default Re: how important is it to port match head/block (Mr. Vapor)

Bump for a good question, I wondered this too...
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Old May 2, 2003 | 08:44 AM
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Default Re: how important is it to port match head/block (civicqm)

Confucious say, build right, or don't build at all!
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Old May 2, 2003 | 09:49 AM
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accordfreak's Avatar
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Default Re: how important is it to port match head/block (lazerus)

wondering also...

half the people say don't.. have the people say do..

i hope this thread gets into a good discussion.
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Old May 2, 2003 | 11:06 AM
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Default Re: how important is it to port match head/block (Mr. Vapor)

https://honda-tech.com/zerothread?id=312105

there's some good info in this one. there are others try a search
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Old May 2, 2003 | 12:57 PM
  #7  
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From: banned NC
Default Re: how important is it to port match head/block (Mr. Vapor)

dont do it, not worth it...
will lower compression and my local tech shop says not to also, lol...wor of mouth
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Old May 2, 2003 | 01:25 PM
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Default Re: how important is it to port match head/block (hybridvteceg)

I agree that if you don't intend on doing any headwork or have already had it done, then dont bother. But if you have intentions on doing headwork then go for it.
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Old May 2, 2003 | 02:42 PM
  #9  
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Default Re: how important is it to port match head/block (symba)

good info........im not so sure i plan on doing head work, maybe just a set of GSR cams, but no valvetrain upgrades really....mostly just bottom end work


anyone else comment on this? at this point, im not totally convinced that the 2mm overlap is not going to cause problems. can anyone provide good evidence as to how this wont harm my engine? its not that i dont trust you guys, id just like to increase my knowledge thats all
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