Guest Anonymous Posted June 1, 2003 Share Posted June 1, 2003 I'm going to be building up an L28 turbo soon from parts I have at the moment, does anybody know whether the L20 turbo head has the same combustion chamber size as an N42? I know the compression ratio of the engine is 7.something:1 but I have no idea about the head. I'm sure it has heart shaped combustion chambers, I'll know definitely on Tuesday when I pull the head off. The plan at the moment is for an N/A L28 block, L20 turbo head, L20 turbo and exhaust manifold, L28 injectors and inlet manifold, L20 turbo computer, and a modified L28 sump. Quote Link to comment Share on other sites More sharing options...
stagefumer11 Posted June 1, 2003 Share Posted June 1, 2003 ahh great i would also like to know. since i have that "lovely" L20et. Quote Link to comment Share on other sites More sharing options...
DAW Posted June 2, 2003 Share Posted June 2, 2003 You could figure it out mathmatically if you know the piston dish, c.r., displacement/6, and the ring land-head gasket thickness volume (this one could be tough, 6.75cc should be close for this). DAW Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 3, 2003 Share Posted June 3, 2003 Yeah only problem is I don't know most of them. I've got the head off now and it does have heart shaped combustion chambers, the inlet ports are quite a bit smaller. The engine has dished pistons aswell. I found out the reason why the head seemed to be leaking water aswell, there was a head bolt that had been snapped in half and the top half was lying inside the head with the washer next to it, somebody must have taken it apart before and not even tried to fix it. All the pistons look good though, funny 'cause I though I would have broken one on 15 - 20psi. Quote Link to comment Share on other sites More sharing options...
stagefumer11 Posted June 12, 2003 Share Posted June 12, 2003 is this on a l20et ? i know my mate ran his on 15psi and smoke a SS ute with it went well. but then blew a head gasket lol Quote Link to comment Share on other sites More sharing options...
David K Posted June 12, 2003 Share Posted June 12, 2003 What is stamped on the side of the head (ie. n47 n42 p90)? Quote Link to comment Share on other sites More sharing options...
240Z Turbo Posted June 13, 2003 Share Posted June 13, 2003 05L, I believe. I have one in my closet and can look later to verify. Ports are very small in comparison. Quote Link to comment Share on other sites More sharing options...
kitami-san Posted May 29, 2013 Share Posted May 29, 2013 this is a very unique engine swap, I like it.I would love to own one of the original SVO's, alot of guys have converted them to v8's though, booo. Quote Link to comment Share on other sites More sharing options...
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