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View Full Version : Difference between C20SE/SEH?


Stanley
06-12-07, 07:51 PM
As above?

What makes the SEH 15bhp ish more??
cornish
06-12-07, 09:32 PM
Higher CR, different cam and ECU map.
Stanley
06-12-07, 09:38 PM
Whats teh reason for a higher CR?

Different pistons?
Saloony
06-12-07, 09:51 PM
The 20SEH doesnt have emmission limits to comply to, iirc it has a different ported head, ie round not square, could be wrong tho.
Jack
06-12-07, 11:35 PM
Compression is the same afaik, hence both engines having S (9.5-10) designation....
Adam
07-12-07, 12:23 AM
They dont/\
The Se bit is wrong.

Its actually C20NE ;)

Differences are as Cornish said.
Jack
07-12-07, 08:22 AM
Ahh, I was going by the engine code lol
Stanley
07-12-07, 03:50 PM
My bad:roll:
cornish
07-12-07, 04:02 PM
SEH head has round ports but tbh not sure what the other heads are like.
Sloth
07-12-07, 04:47 PM
actually there is a 20se, i have one, they were in early carltons and 8v astra mk2 gte's. the seh has flat top pistons a remapped ecu and a different (some say irmischer) cam. the ne has a 8.9 to 1 cr so ripe for a turbo. the se is 9 to 1 the seh is 10 to 1 iirc. if your building a quick 8v use the seh bottom end with an astra mk1 gte 18se head and inlet. (bigger and shorter ports and bigger manifold and throttle body).
just vaux trev
07-12-07, 04:53 PM
http://http://i229.photobucket.com/albums/ee77/justvauxtrev/DSC00359.jpg
any idea wich one this is then