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? CC in 88 oliver head

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stacy

12-30-2002 17:36:47




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Can anyone tell me aprox how many CC that are in a stock super 88 gas cly head?




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Bill

12-30-2002 20:17:24




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 Re: ? CC in 88 oliver head in reply to stacy, 12-30-2002 17:36:47  
The super 88 head has a compression chamber of approximately 92 cc.



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stacy

12-31-2002 18:26:04




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 Re: Re: ? CC in 88 oliver head in reply to Bill, 12-30-2002 20:17:24  
We CC the head tonight and you were right on the mark 90cc +or- 2 thank you Stacy



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Geoffrey in KS

12-31-2002 19:00:13




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 Re: Re: Re: ? CC in 88 oliver head in reply to stacy, 12-31-2002 18:26:04  
Dumb question, but how exactly do you find the CC?



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stacy

01-01-2003 10:39:16




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 Re: Re: Re: Re: ? CC in 88 oliver head in reply to Geoffrey in KS, 12-31-2002 19:00:13  
We didnt get that fancy just took a vet sirenge marked off in CC's and filled the comb chamber till it was even with the top. not as accurate as using a cover but close enough so we could figure some approx comp ratios.



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RAB

01-01-2003 02:29:14




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 Re: Re: Re: Re: ? CC in 88 oliver head in reply to Geoffrey in KS, 12-31-2002 19:00:13  
Hi Stacy,
Not a dumd question. Biggest thing is to get accurate results if you go to this trouble to balance an engine.
Be sure valves seal properly, replace plug and set head upside down and level. Place a glass sheet (with a small hole drilled in it) on the lighty greased head face and proceed to completely fill the combustion chamber from an accurate dispensing measure (a burette). Repeat for accuracy, then repeat on other combustion chambers. Don't forget any extra/less for head gasket thickness, domed pistons, etc. when calculating actual compression ratio. Mainly used to balance combustion volumes where head has been gas-flowed and skimmed for as high a compression ratio as the fuel will allow. You could, of course come up with a ball-park figure calculated from the listed compression ratio for the engine.
May be other methods but that's what I did with my car engine, back in the seventies.


Of course, it would be measured in cubic inches in the States but I have never come accross a cubic inch burette over this side of the water.
Often wondered how students do titrations in the States - perhaps you could enlighten me, please, if you are in the States.
Regards and happy new year, RAB

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