Whats the formula to find the compression ratio
Re: Whats the formula to find the compression ratio http://www.bgsoflex.com/auto.html
This will get you in the ballpark
LAter <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
This will get you in the ballpark
LAter <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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Joined: Jun 2002
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From: Upstate NY
Re: Whats the formula to find the compression ratio </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Bob2of3:
<strong>http://www.bgsoflex.com/auto.html
This will get you in the ballpark
LAter <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">It appears that "piston top volume" is "piston dish" if positive and "dome" if negative.
"Deck height" appears to be negative when piston is out of the hole.
Both of these conventions are opposite of what I'm used to.
Watch your signs!
<strong>http://www.bgsoflex.com/auto.html
This will get you in the ballpark
LAter <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">It appears that "piston top volume" is "piston dish" if positive and "dome" if negative.
"Deck height" appears to be negative when piston is out of the hole.
Both of these conventions are opposite of what I'm used to.
Watch your signs!
Thread Starter
TECH Senior Member
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Joined: Jun 2002
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From: NW Houston, TX
Re: Whats the formula to find the compression ratio yea cause when I tried a 67cc head with 10cc pistons it came to 9.1 but then when I used -10cc it brought it back up to 11.6 so for thoes of you that didnt know ask questions before you buy a set of pistons <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
