the L20B rods are 145.70mm the Z20E pistons are 32mm and an 8cc dish L20B rods and Z20E pistons together sit 1.75mm below deck in an L20B block using an 86mm bore and 2mm headgasket you get 8.4:1 then mark's made his a 13cc dish which gives 7.9:1
Dave ----- Original Message ----- From: "andrew smith" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, June 28, 2002 9:01 AM Subject: Re: Tuning Cars (off topic) > Mark, > With those figures it does work out at 6.7:1.But i dont know how you get 40cc > for a deck down measurement.If your using z24 crank,L20 rods and Z20e pistons > then they should sit no further down than 1.5mm from the deck in an untouched > L20 block.I thought those pistons were around 13cc's and 1.5mm below should give > a further 8.7cc Which would give around 8:1,maybe a little less if the dish is > larger that 13cc. > > mark krawczuk wrote: > > > my bore is 86 mm, the gasket hole is a little bigger , so i reckon that it > > would be a hole of about 87mm. > > my head cc is 45 > > bore 86 > > stroke 96 > > 2mm head gasket approx 11.76 cc > > > > the volume with dished pistons that havent been machined , and the > > piston at tdc is 40 cc. (fluid level with top of block) > > > > what do you mean 32mm z20e pistons, mine pistons are 86 mm ( 1 mm > > oversize) > > > > i have been plugging these figures in a comp ratio calc and seem to be > > getting about 6.7:1 comp can any body double check these figures? > > i know before i said it was about 7.8 :1 but this is what i was pretty > > sure it was... which was of the top of my head. > > the figures above are actually what i have written down. > > > > mark k > > > > ----- Original Message ----- > > From: "David Costello" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Thursday, June 27, 2002 6:56 PM > > Subject: Re: Tuning Cars (off topic) > > > > > shit, how'd you get the compression that low? > > > the dish on the pistons must be huge > > > using Z24 crank, L20B rods, 2mm copper gasket and the 32mm Z20E pistons it > > > gives a comp ratio of 11:1 > > > and you said you were running 87mm bore...that's around 11.4:1 > > > > > > Dave > > > > > > ----- Original Message ----- > > > From: "mark krawczuk" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Thursday, June 27, 2002 8:08 AM > > > Subject: Re: Tuning Cars (off topic) > > > > > > > > > > hi, i have dished z20 ( you can get flat or dished), which i got > > machined > > > > out a bit more, then when i had to redo he engine i just put the dish > > > type > > > > back in withoutt geting them machined out more. i can work it out more > > > > exact if ya want me to but i think i ended up with about 7.8:1 or > > 7.9:1 > > > > > > > > and yes, z20 pistons on l20b rods. > > > > > > > > mark k > > > > ----- Original Message ----- > > > > From: "David Costello" <[EMAIL PROTECTED]> > > > > To: <[EMAIL PROTECTED]> > > > > Sent: Thursday, June 27, 2002 12:41 AM > > > > Subject: Re: Tuning Cars (off topic) > > > > > > > > > > > > > hey mark, slightly off this threads topic here, but what compression > > > ratio > > > > > did your L/Z combo end up with? > > > > > you used Z20E pistons and L20B rods didn't you? > > > > > > > > > > Dave > > > > > ----- Original Message ----- > > > > > From: "mark krawczuk" <[EMAIL PROTECTED]> > > > > > To: <[EMAIL PROTECTED]> > > > > > Sent: Thursday, June 27, 2002 1:07 AM > > > > > Subject: Re: Tuning Cars (off topic) > > > > > > > > > > > > > > > > i have pics of the body, and engine but non of the internals of the > > > > > > engine. i did have some internal engine film on a handycam tape > > but > > > > it > > > > > > got chewed up, when i get the energy i might see if i can salvage > > > > > something > > > > > > of it. > > > > > > if you want i can burn u a cd with some pics of my datsun. email me > > > : > > > > > > [EMAIL PROTECTED] > > > > > > witth a postal addresif you want them .. for free !!!! > > > > > > > > > > > > mark k > > > > > > ----- Original Message ----- > > > > > > From: "Paul Stanley" <[EMAIL PROTECTED]> > > > > > > To: <[EMAIL PROTECTED]> > > > > > > Sent: Wednesday, June 26, 2002 11:01 PM > > > > > > Subject: Re: Tuning Cars (off topic) > > > > > > > > > > > > > > > > > > > Do you have pictures? > > > > > > > > > > > > > > From: Paul Stanley > > > > > > > [EMAIL PROTECTED] > > > > > > > > > > > > > > > > > > > > > > > > > > > > ----- Original Message ----- > > > > > > > From: mark krawczuk <[EMAIL PROTECTED]> > > > > > > > To: <[EMAIL PROTECTED]> > > > > > > > Sent: Wednesday, June 26, 2002 4:47 PM > > > > > > > Subject: Re: Tuning Cars (off topic) > > > > > > > > > > > > > > > > > > > > > > l20 b block (4cyl), with navara 2.4 crank,z18 efi head, T3 > > > > turbo@10 > > > > > > psi, > > > > > > > > ivan ttighe cam,boost retard dizzy,v8 commodore throttle body > > and > > > > > > toyota > > > > > > > > 7mgte injectors.......... > > > > > > > > > > > > > > > > mark k > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > --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]/ ---------------------------------------------------------------------
