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View Full Version : whats the difference between a 20ne and a 20seh


napalm_27
08-01-09, 10:35 AM
iv picked up a astra with a 2.0 8v but cant tell if its a ne or seh how can you tell other than finding the engine code.
and what is the difference in the engine i.e power etc.
regards nathan
spanishfly
08-01-09, 10:36 AM
Power the SEH is 130, NE 115.
napalm_27
08-01-09, 10:37 AM
orite so how would i tell if its a seh or a ne?
white2lSR
08-01-09, 10:39 AM
It will be stamped into the block on the edge where the gearbox bolts to it, to to the right/behind the dip stick
spanishfly
08-01-09, 10:40 AM
What year Astra is it?
napalm_27
08-01-09, 10:42 AM
k reg 1992/93
7 years service stamps aswell :thumb:
spanishfly
08-01-09, 10:44 AM
More than likely an NE unless it's been changed.
napalm_27
08-01-09, 10:46 AM
either way its still going in the nova :thumb:
i was just trying to find out so i could get the right parts
but there just about the same with all the 8v's arent they?
Dod
08-01-09, 11:10 AM
The NE, SE and SEH are all Big Block engines and all the Parts are interchangable. Try and locate an SE or SEH Cam, Head, ECU and Loom and stick it all on it instead, this'll give you about 15bhp straight away and cant cost much. I have the top end twice in my Garage and €100 is all I ever ask for it.

As for identifucation, as you look at the engine from the front, above the exhaust manifold, where the block meets the head theres a ledge on the block, extended out more than on the rest of the block. Clean it off with some steel wool, a wire brush or some very fine sand paper and it'll say what it is there. As said, its probably an NE but if thats the case, do as I described above.
napalm_27
08-01-09, 11:13 AM
ok mate cheers for that il get back to you when i find out
mowgli
08-01-09, 11:21 AM
the ne is lower compression.. the pistons are different
napalm_27
08-01-09, 11:23 AM
can some one be kind and find me the engine code thread that was on here as iv used search and cant find it
Steve
08-01-09, 12:31 PM
Ahh deja vu! just had this conversation on cc! lol lol
Andy
08-01-09, 12:34 PM
can some one be kind and find me the engine code thread that was on here as iv used search and cant find it
You havent used it,or you havent used it properly.I found it in about 3 seconds
Southie
08-01-09, 12:38 PM
can some one be kind and find me the engine code thread that was on here as iv used search and cant find it

It's in the articles section iirc made by Lee.
napalm_27
08-01-09, 12:39 PM
didnt
napalm_27
08-01-09, 12:39 PM
didnt use it properly then
brainsnova
08-01-09, 01:10 PM
edit : i fail lol
Andy_L
08-01-09, 01:10 PM
the ne is lower compression.. the pistons are different

:D

Head is the same IIRC.
Nova_Tek
08-01-09, 01:43 PM
If you plan to make it a turbo then the NE is slightly more advantageous as its lower compression.

SEH deffo has more oomph even if its only 15bhp difference.