Here's what I know: For a 31.6mm pin height you have two Nissan options, Z20 and VG30. Z20 are a straight fit into L conrods and come in 85/85.5/86mm bore. VG30 are not always a straight fit onto L conrods and sometimes require converting to fully floating pins, but come in 87/87.5/88mm bore.
There are some Calibra pistons which have a 30.4mm pin height and 21mm pin diameter (*should* be straight fit for L conrods) which come in 6.3cc 11.4cc and 14.4cc dish sizes but only 86 and 86.5mm. (Incidentally, for those crazy enough on the list, these would be good for an L20b with VG30 rods- 1.79:1 rod/stroke... 1998cc screamer!) Check out the ACL catalogue for more information (www.acl.com.au), and be careful to note the dish sizes before you order anything. Cheers, - Tom mark krawczuk wrote: >hi, yes it is, i only bored mine out 1mm. >to get it sonic tested at a GUESS about 15 dollars or so a bore ? > >mark k >----- Original Message ----- >From: "Chris Simpson" <[EMAIL PROTECTED]> >To: <[EMAIL PROTECTED]> >Sent: Tuesday, April 02, 2002 10:32 PM >Subject: Re: L/Z HYBRIDS > > >>Thanks mark >> >>The Z20 is only 85mm bore thou isnt it? I'd like to take it to 87 or 88mm >>bore. My block has already been bored to 86mm on a previous rebuild so >> >the > >>Z20 pistons are out unless i sleeve it, which i wouldnt do. >> >>Do you know how much it is to sonicly test the bores? >> >>thanks >> >>Chris >> >>mark krawczuk writes: >> >>>hi, dont you mean the crank? >>>i am using l20b conrods and z20 pistons, i am also running a z18 >>> >head/t3 > >>>turbo. there are two types of z20 pistons, flat and dished, i am using >>>dished , and with this set up (if i remember rightly) i am getting >>> >about > >>>7.6:1 comp. >>> >>>might pay to get the piston bore sonic tested for thickness. >>> >>> >>>mark k >>>----- Original Message ----- >>>From: "Chris Simpson" <[EMAIL PROTECTED]> >>>To: <[EMAIL PROTECTED]> >>>Sent: Tuesday, April 02, 2002 6:05 PM >>>Subject: L/Z HYBRIDS >>> >>> >>>>g'day all, >>>> >>>>Im currently having my L20 block machined to take the Z24 crank and im >>>>wondering what others have done for pistons. >>>> >>>>I want to run forgies and a compression ratio of around 8-8.5:1. The >>>> >plan > >>>>is that once its set up and get it running nicely on a single weber or >>>>similar and then set up the EFI and turbo/supercharge it. >>>> >>>>The other thing is that i want to run a 88mm bore if possible, 89 is >>>> >too > >>>>close for my liking to the water jacket, especially that im going to >>>> >turbo > >>>>it, although i'll be happy to listen to those running a 89mm bore >>>> >turbo L > >>>>series that think it works well. >>>> >>>>Chers Chris >>>> >>>> >> >> >> > > --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]/ ---------------------------------------------------------------------
