Z18xe

[mk1nova_rich]

is this the small block 1.8?

If so are the manifolds the same as C/X16XE??

[craig green]

Yes if its a Z18XE1 & Yes I believe the C16 exhaust flanges on the head are the same. Inlet side is different. Await a real answer from the likes of Peester or Jonlem etc.

[mk1nova_rich]

ok, thanks anyway

[simonhill]

yes they are i had z18xe inlet and exhaust manifolds on my x16xe astra sport made a difference too!

[smithy64]

the z18xe smallblockis out of a vectra ent it?

[draper]

Yes if its a Z18XE1 & Yes I believe the C16 exhaust flanges on the head are the same. Inlet side is different. Await a real answer from the likes of Peester or Jonlem etc.

the exhaust ports line-up and match but the bolt spacings are slightly different, nothing a spot of redrilling and making holes into slots doesnt fix tho


inlets are totally different tho

[draper]

the z18xe smallblockis out of a vectra ent it?

vectras and mk4 astras aer the most common vehicles they came in

[peester]

X18XE1 small block vectra B (facelift) onwards astra 4 non sporting models. cable throttle.
Z18XE small block vectra B (facelift) onwards astra 4 and corsa c sporting models with fly-by throttle
Z18XE1 small block vectra C astra 5 models with fly-by and VVT
manifold thing must becoming bit of a myth, theyre very similar but not the exactly the same as said port holes line up, thats it tho - holes not, sump also gets in way i think

[craig green]

the z18xe smallblockis out of a vectra ent it?

Yeah.. You can spot them as having 5 stud hubs. The big block 1.8XE was 4 stud.

[Adam]

The inlet stud patterns are completely different, theres no way a c/x16xe inlet will fit.