zane9000 Posted February 4, 2008 Share Posted February 4, 2008 I have some spare parts hanging around so I was thinking about building up an engine with the following: L28 Crank, L24 Rods, E88 Head, 2mm Head gasket, N47 Block. This is going to be on a forced induction setup. I am trying to decide on pistons. I would like to use to use l28 flat pistons, but as I understand there will be a deck height clearance. If I use stock KA24 pistons will I need to overbore the cylinders? Also, are the KA24 and KA24E the same thing, if so are these (http://cgi.ebay.com/ebaymotors/90-97-2-4-NISSAN-Pick-Up-KA24E-sohc-Piston-Set-Rings_W0QQcmdZViewItemQQcategoryZ33665QQihZ020QQitemZ300194243674QQrdZ1QQsspagenameZWDVW) a good buy? They seem pretty cheap. Thanks! Quote Link to comment Share on other sites More sharing options...
zeiss150 Posted February 4, 2008 Share Posted February 4, 2008 If your gonna boost watch your compression ratio. I think that combo might put you close to the 10:1 area...and thats not good for boost, especially with the E88 head. I think 8-8.5:1 is where you wanna be for mild boost with a p79 or a p90 head. I hope this helped. Matt- Quote Link to comment Share on other sites More sharing options...
SR_man_49 Posted February 4, 2008 Share Posted February 4, 2008 If your going to boost you don't want to use the OEM KA24 pistons, The ring lands are small and weak and wont handle the boost very well. There are two types of KA's the KA24E and KA24DE, Both use the same pistons and are not good with boost. Exp. when you will have high compression. Quote Link to comment Share on other sites More sharing options...
zane9000 Posted February 4, 2008 Author Share Posted February 4, 2008 I am aware about the compression issue, thats why I was planning on using the 2mm head gasket to help as much as possible. I am also going to be using megasquirt to regulate fuel and spark and I will be very conservative with boost. Would the stock L28 pistons work ok or do I need to look for another option? Quote Link to comment Share on other sites More sharing options...
SR_man_49 Posted February 4, 2008 Share Posted February 4, 2008 I am aware about the compression issue, thats why I was planning on using the 2mm head gasket to help as much as possible. I am also going to be using megasquirt to regulate fuel and spark and I will be very conservative with boost.Would the stock L28 pistons work ok or do I need to look for another option? Since your going to be using the E88 head i would go with the l28 dished pistons. Quote Link to comment Share on other sites More sharing options...
zane9000 Posted February 4, 2008 Author Share Posted February 4, 2008 Since your going to be using the E88 head i would go with the l28 dished pistons. If the dished pistons would work that would be great. The only reason I had a concern is that I put those items into this (http://www.atlanticz.ca/zclub/techtips/calcs/engine%20builder/index.html) calculator and it said I would have an issue with deck height. Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted February 4, 2008 Share Posted February 4, 2008 http://ozdat.com/ozdatonline/enginedesign/ I find this engine design program to be a little more useful than the Atlantic Z calculator since it has more part options. Quote Link to comment Share on other sites More sharing options...
zane9000 Posted February 4, 2008 Author Share Posted February 4, 2008 I just finished playing with the ozdat calculator and decided that I will use a set of LZ22S pistons. Any suggested sources, or should I just grab some from my local auto parts store? Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted February 5, 2008 Share Posted February 5, 2008 The junkyard... Just disassemble 1.5 motors. That motor is in the pickups(IIRC) Quote Link to comment Share on other sites More sharing options...
zane9000 Posted February 5, 2008 Author Share Posted February 5, 2008 Ug, I am not exited about disassembling motors at the junkyard... I think Ill just pay more at the parts store Quote Link to comment Share on other sites More sharing options...
MJLamberson Posted February 5, 2008 Share Posted February 5, 2008 Ug, I am not exited about disassembling motors at the junkyard... I think Ill just pay more at the parts store to each his own... Quote Link to comment Share on other sites More sharing options...
(goldfish) Posted February 5, 2008 Share Posted February 5, 2008 I think I'ld go custom forged, and be very careful tuning. Quote Link to comment Share on other sites More sharing options...
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