Compression Ratio's Yet Again

[David Costello]

Guys I'm having trouble getting my brain around something to do with calculating compression ratio's.   I know the formula I'm using is correct, I've tried using figures for motors I allready know the compression ratio of and it's been spot on every time.   the thing that's got me stumped is if you increase the piston height value, the final compression ratio decreases.  I'm having trouble understanding how that works, shouldn't it increase compression since it's bringing the piston closer to deck?   I've tried using 2 compression ratio calculators as well, and exactly the same thing happens. The compression ratio calculator doesn't have a "piston height" option, but it does have "piston below deck" field, and if you bring the piston closer to the deck then exactly the same thing happens....compression ratio DECREASES   this has got me stumped :( maybe I should stop trying using mathematical formulae at ungodly hours of the morning :) hehe   Dave --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ ---------------------------------------------------------------------