from series 1 to series 2 motor

[sik-holden]

just about to undertake a engien swap in the vn from the series 1 to the series 2 vn motor.

what do i have to change to get it to all work?

and whats the cheepest computer to run the motor as it will be a worked v6 motor.


tim

[pow3rslave]

i think the flywheel is different. radiator, overflow tank and the piping to them. nothing else i can suggest, but i know there is more.

[Morton]

There are a lot of S2 changes, but most of them are contained fully within the motor. There were a few mounting changes between the trans/motor - I know the inspection plate over the driveplate was modified in S2 to bolt onto the motor with six nuts for extra stability.

The main difference is the crank-driveplate bolt pattern. If you can pick up a S2 motor with box, it will make things a lot easier

Radiator/bottles/piping is fairly cheap. Stick with the factory computer, it shouldn't have any problems.

[mischa]

V6 Crankshaft Info

If its auto you will need a S2 driveplate to go with the S2 engine and S1 gearbox (have done this.

If its manual i would assume you would need a S2 (8 bolt) flywheel.

[Chirpstr]

Series one doesn't have a support brace, however series 2 does. Bell housing is slightly different with the more bigger holes on the bottom for the brace etc...

[sik-holden]

ok using the s1 manual box just got to get the s2 flywheel to match, what wireing is different i got everything else sorted out.

[sik-holden]

anyone know??????

[mischa]

If you havent converted (auto-manual), no changes in wiring from S1 - S2 (that im aware that afect what your doing)

[Morton]

There should be no changes to the wiring. If you find anything that doesn't quite reach, then all you have to do is cut the wire, and splice an extension in there

[sik-holden]

what about the os senser, the s2 has a 4 wire dosnt it?

tim

[Zuicider]

did a series 2 top end series one bottom end. changed the heads, intake manifold, heater tap timing cover and just reconfiged where the wiring went around the injectors

[Morton]

what about the os senser, the s2 has a 4 wire dosnt it?

tim

Mine didn't. If you DO have an issue, what's wrong with running the old S1 o2 sensor in the extractor since you're running the S1 computer?

[sik-holden]

true will well then should be anything stoping me from doing it except that i got to rebuild the motor first.
thanks gyes

[defa]

i did the other way around. went from series 2 - series 1. and did a manual conversion at the same time. the only wires i think i changes was one at the front of the manifold and one at the back. shorten 1 wire and lengthen the other. i cant remember what they were. it was about 5 years ago now.
s2 has 3 wires and s1 has 2 wires on the o2 sensor..
don't try changing looms either as the plug are different..

[Morton]

true will well then should be anything stoping me from doing it except that i got to rebuild the motor first.
thanks gyes

Shouldn't be anything stopping you at all. If there is, it will be a minor problem, and you can just jump on here and ask us

Everything else should be straightforward. If you find that any plugs don't fit, then take the old plug out of the S1 motor and place it on the S2 motor (like the oxy sensor). But most things I can think of, from the CAS to the knock sensor should all be identical