20seh and c20ne differences

[nige-p]

ok guys im looking for a 20seh engine and want to know what is the main differences between this engine and a c20ne is cosmetically, i allready know its a completly different engine and i know the pistons have different pockets in them

but is their any easy ways to tell

thanks nige

[show n shine]

seh is 130 bhp and the other i think is 115bhp

[nige-p]

yes i know that im after how you can tell the difference just by looking at them

[CraigGreen]

Cam, pistons, ECU & cyl head to name a few.

[ALLNOVA]

check the number on the ecu.. im sure the seh is the only 8v with the slim box that plugs into the injectors (not 100%).. i had a 20se(before i got the seh) and the looms were different. (injectors plug in individually on se loom)

hope this helps!

[Kieran]

Only differences between the two are cam, pistons and ECU. Heads share the same part number. Most obvious ways to tell which engine it is without stripping it is to check the engine number on the flat face on the top front right corner of the block, look for a lambda (or lack of) sensor in the exhaust downpipe and also, look for the fuel tank vent valve on the top of the inlet. SEH doesn't have this, NE does. And as already mentioned, check the ECU part number.

[nige-p]

anyone know what cars these came in as standard i know the were in
cavaier sri 130 (mk2)
cavalier sri (mk3) early models
cavalier calibra

anything else?

[CorsaDanny]

there were also in the astra gte as ive got 1 in my corsa from the astra

[screamer69]

cam/ecu / pistons and thats it

[vauxhall16v]

fuel pressure not 2.5 on the seh ser engines and ne is 3.0 bar

[TELVM]

fuel pressure not 2.5 on the seh ser engines and ne is 3.0 bar

You sure? The EPC lists the very same FPR (GM 90 166 629) for Vectra-A/Cavalier C20NE, Cavalier 20SEH and Calibra C20NE.

[Frisco]

The FPR is the same on both engines.

[vauxhall16v]

they cant be ive got three engines outside with 3.0bar regs and two with 2.5bars and both the 2.5s are 130s

at least one of these i know the full history an past owners so i know they aint been changed

[Frisco]

They are mate. Same part numbers.
I have been through a few of these engines 99% of parts are the same

[vauxhall16v]

there has to be some reason for it

maybe some dealer sold hundreds of wrong regulators? lol