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H81 head what comp is std ? |
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Home away from home  
Joined:
2013/11/28 7:34
From melbourne
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Hi guys,
I have just started to strip the spare engine A12 the markings on the head say H81 /073 i've been told this is a sweden emission head,The whole motor is from a sunny ute ,small port,intake 35mm exhaust 29mm
"what comp" would this head produce on a stock A12 engine..?
thanks
Anthony
Posted on: 2014/1/18 9:26
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Re: H81 head what comp is std ? |
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Joined:
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From 48 North
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Should be the typical compression ratio - 8.5:1. Good for std octane fuel.
The SWE head was used in many places but apparently not in Japan.
Posted on: 2014/1/18 9:57
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Re: H81 head what comp is std ? |
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Home away from home Joined:
2013/11/28 7:34
From melbourne
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ok so my 120y should be std comp of 9.0-1 this head will drop it further down to 8.5-1 ?
cheers anthony
Posted on: 2014/1/18 10:01
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Re: H81 head what comp is std ? |
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Moderator Joined:
2001/5/3 7:04
From 48 North
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Usermaster
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If it does you won't notice the difference. 1/2 point CR is only 1 HP difference.
Posted on: 2014/1/18 10:05
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Re: H81 head what comp is std ? |
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Home away from home Joined:
2013/11/28 7:34
From melbourne
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your right but helps when calculating/playing with final boost pressures
thanks for your help
cheers anthony
Posted on: 2014/1/18 10:11
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E85 Turbo 120y wagon Built not bought........
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