swinters Posted May 21, 2012 Share Posted May 21, 2012 Good day all. I am starting to restore my highschool 280zx but before I do I wanted to have all the parts in place for a soft rebuild on the motor. I always thought it was a 1981, but I cannot accurately determine the year from the serial ( HS130-227XXX) The sticker says 132 HP, I need to know if I have the dish or flat top pistons as these have different rings and gasket sets. Anyone know which pistons I would have, or do I just need to pop the head and find out. Quote Link to comment Share on other sites More sharing options...
BluDestiny Posted May 21, 2012 Share Posted May 21, 2012 You need to tell us the engine code or head code for that. Then engine code is on the intake/exhasut side towards the bottom of the block, under cylinder 3/4. Head code is on the spark plug side near the front of the head. http://www.xenons30.com/Engine.html If you have a N42 block and an N42/N47 head you probably 99% have dished pistons. There is a slight change they did a rebuild at some point and used flattops. If you have an F54 head and a P79 head you have a flattop engine. Quote Link to comment Share on other sites More sharing options...
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