engines se vs sv

[j460ash]

any one the difference?i shot bottom end in gte and been offered a cav sv engine for nothing.are the bottom ends the same?

[mikey14sr]

Heads are definately different due to inlet port shapes, From what I can gather the blocks do seem the same, however, I dont know if the pistons reach the same height in the bores, if the pistons in the sv sit lower at maximum height the compression ratio might be lower.

[craig green]

SE & SV denotes cr. SE will have higher CR & the head is marked SE, so the head may also be different, port shapes & maybe valve area.

Pistons could be different too, not unusual with Vauxhalls.

CG

[Adam]

Ye, SV has square ports, probably smaller valves than the SE too.

SE has bigger round ports.

Bore and stroke is the about same IIRC.

e16se CR-10.0:1
16sv-10:1

[Snowface]

the S denotes the CR, the las letter denotes what type of fueling.

E = MPI
V = Carb

both engines' CR lie between 9.5:1 and 10.0:1

[Stuart]

basically, yes you can use the 1.6sv bottom end, but ensure you transfer the crank sensor across to the other block