ahhhh thanks Tom I had 0.125 in the specs I had given to me it must have been supposed to be 1.25 thought it seemed a bit thin
what can I say....it's late...that's my excuse and I'm sticking to it hehe Dave ----- Original Message ----- From: "Tom Richardson" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, June 27, 2002 12:37 AM Subject: Re: Compression Ratio's again > Head chamber volume is 45.2cc for a U67 head > Crushed stock head gasket thickness is 1.2mm which makes the volume of > it about 7cc > Deck height at TDC is Block height (227.45) - Conrod length (145.9) - > Piston pin height (38.1) - Crank throw above crank centreline (86/2) = > 227.45 - 145.9 - 38.1 - 43 = 0.45mm below deck > Dish is 9.6cc according to ACL piston catalogue > > approx ~8.5:1 > > Cheers, > > - Tom > > David Costello wrote: > > > Anyone here every used Desktop Dyno 2000? > > > > I'm having troubles getting accurate compression ratio figures from it > > > > > > > > just to test how accurate it was I put in all the figures from a motor > > I allready knew the compression ratio for....a stock L20B > > > > > > > > Bore : 85mm > > > > Stroke : 86mm > > > > Head Chamber Volume : 45cc > > > > head gasket thickness : 0.13mm > > > > piston down from TDC : 0mm > > > > piston dish cc : 8cc > > > > > > > > those are the specs I've inputed and it's telling me the comp. ratio > > is 10.08 : 1 > > > > > > > > have I done something wrong or is the software inaccurate? > > > > > > > > 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/[email protected]/ > > --------------------------------------------------------------------- > > > > --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/[email protected]/ ---------------------------------------------------------------------
