brianm Posted February 15, 2015 Share Posted February 15, 2015 Does anyone know the difference between 2.0 seh and c20ne Pistons if any , I know the seh compression is 10.0:1 and the c20ne is 9.2:1 Trying to work out witch Pistons are in the engine I have ,it's supposed to have the higher compression one's but not sure The engine is a c20ne running 1.8e ported head and higher lift cam Thanks brian Quote Link to comment Share on other sites More sharing options...
andyc Posted February 15, 2015 Share Posted February 15, 2015 The NE has a larger dish in the top of the piston and the SEH has a lot small dish, this is what gives you the difference in compression ratio If your got a pic of the pistons post it up and will be able to confirm for you Cheers Andy Quote Link to comment Share on other sites More sharing options...
brianm Posted February 15, 2015 Author Share Posted February 15, 2015 Thanks Andy ,will get a pic tomorrow, Quote Link to comment Share on other sites More sharing options...
brianm Posted February 16, 2015 Author Share Posted February 16, 2015 (edited) Think it's ne pistons http://s240.photobucket.com/user/bmorrison/media/DSC_0379.jpg.html?filters[user]=57104483&filters[recent]=1&sort=1&o=0 Edited February 16, 2015 by brianm Quote Link to comment Share on other sites More sharing options...
andyc Posted February 16, 2015 Share Posted February 16, 2015 They are SEH one mate, the NE has a must larger squish in the top Quote Link to comment Share on other sites More sharing options...
brianm Posted February 16, 2015 Author Share Posted February 16, 2015 That great info ,thanks for your help Andy ,someone knew what they were doing when they built the engine ,it came out off a sunbeam rally car ,I had been told it had some tuning done but was unsure what, So what I have is N20ne block 20 seh Pistons 18e head A hi lift cam off some sort I have to go with it 4-2-1 tubular manifold ,set of twin 45's and a 1.8 dizzy altered to suit the carbs this lot should make 150bhp once it's set up ,I hope Thanks brian Quote Link to comment Share on other sites More sharing options...
dynamytedan Posted February 17, 2015 Share Posted February 17, 2015 in my experience that set up pinked its nuts off, no matter what i did with the distributor and the carbs . the cr was too high . but my block face had been skimmed a bit . and the pistons were slightly proud of the block face at the top of the stroke !! they don't seem to knock the head off luckily I would recommend the 2.0 seh head for no pre ignition, with the 1800 cam shaft , or the one you have . forget the dizzy look at that , if you haven't already http://www.ebay.co.uk/itm/NODIZ-3D-Mappable-Electronic-Ignition-System-no-need-for-EDIS-or-Megajolt-ECU-/271778494302?pt=LH_DefaultDomain_3&hash=item3f4742b75e Quote Link to comment Share on other sites More sharing options...
brianm Posted February 18, 2015 Author Share Posted February 18, 2015 Cheers dan, going to use the 1.8 cam as the one in it is fubard,going to use the dizzy I bought of you a while back the one altered by H+H ignitions see how that goes, will have a read up on that link Thanks brian Quote Link to comment Share on other sites More sharing options...
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