engine change

[skyper]

could u tell me guys what latter model commodore engines will interchange with a vn s1 v6,other words what late mod blocks will bolt straight up to my 5 speed,changing external gear is not a problem

[social]

id also like to know the asnwer to this question

[Andrew426]

I think the latest you can go is a VP s1. You could go VPS2 to VR by swapping/altering your trans. An ecotec will bolt in to a VN with a new harness, computer, suitably equipped trans and some exhaust bits. Dont know wbout the supercharged ecotec or the alloytec, I dont think anyones tried those.

5L or 5.7L are probably your best bet if you wanna go as far as swapping engines (as far as gain/effort goes)

[Pub247]

Technically no other motor bar a manual series one motor will bolt straight up. As your flywheel doesnt suit any other.
If you get the crank adapter or a new 8 bolt flywheel any v6 up to VY will bolt up to it. Things will need changing like wiring loom or retuned and flywheel will need balancing to suit new motor

[skyper]

what does the crank adapter do exactly,that sounds better than balancering

[Pub247]

S1 flywheel and manual motors are 6 bolts after series one everything is 8 bolt (including series 1 auto motors) so the adapter adapts an 6 bolt flywheel onto 8 bolt crank. You still need balancing if you went to an ecotec or l67 motor.
V6 Crankshaft Info
See that thread for more info

Also a alloytec or gen3 wont bolt up to a T5 you may be able to get a v6 t5 botl up to a holden 5liter but would require changing extension housing and a custom clutch

[skyper]

mate u have been very helpful,is my 5 speed called a t5,and will the bellhousing bolt up to an ecotec,r their heads that r better then others,the s1 engine in it now virbrates always has since new,their not smooth so this is why i am weighing things up,ihave read the crank site

[Pub247]

Yes it is a T5 and it will bolt straight up to an ecotec. Ecotec heads dont bolt per se but its waaaaaay too much stuffing around to make a system that works its easier just to swap the whole motor over. Luckily you can get one as new as as vy that will fit

[skyper]

so an ecotec is the way to go, my box will bolt straight up and the crank section said to put my orignal flywheel on the ecotec,is that right ,and get it balanced,is that the crank and flywheel or just the flywheel,i dont understand why u would have to balance either because they r both already balanced

[mischa]

S1 flywheel and manual motors are 6 bolts after series one everything is 8 bolt (including series 1 auto motors) so the adapter adapts an 6 bolt flywheel onto 8 bolt crank.

This seem to be a common mistake, if you look at the link you posted it tells you that both auto and manual S1 engines are 6 bolts.

Also you mentioned putting V8 infront of a V6 T5, i didnt think you could do this cause of the internals of the gearbox or something?

[Pub247]

This seem to be a common mistake, if you look at the link you posted it tells you that both auto and manual S1 engines are 6 bolts.

Also you mentioned putting V8 infront of a V6 T5, i didnt think you could do this cause of the internals of the gearbox or something?

Yes sorry error on my part you'll need a 8 bolt flywheel if going to ecotec. Yes the input shaft is different which is why you'd need a custom clutch.

Skyper, Ecotec will bolt up but you'll still need an 8 bolt flywheel. Flywheel needs to be mirror balanced to the ecotec flexplate due the the motor being differently balanced what you end up doing is unbalancing the motor causing premature wear on its components

[Morton]

I heard someone say "ecotec"

Make sure you cange the ECU, both wiring looms, and the BCM.

[centy]

greenfoam told me a ecotec will run fine on a vp tune with vp sensors fitted.

[Morton]

Yeah, that'll work too. I think you've gotta get the inlet manifold drilled and tapped though, to suit the VP map sensor. But if you're going to the effort of having an ecotec installed, why not use an ecotec computer and take advantage of sequential injection?

[HoZy]

Yeah, that'll work too. I think you've gotta get the inlet manifold drilled and tapped though, to suit the VP map sensor. But if you're going to the effort of having an ecotec installed, why not use an ecotec computer and take advantage of sequential injection?

Because how slow is an ecotec with sequential injection..

You remember the VN is bank injection.. An the TORQUE that had...

[Morton]

Yeah, I know... but TECHNICALLY the ecotec should be better lol

[HoZy]

Yeah, I know... but TECHNICALLY the ecotec should be better lol

Technically yes, but Sequential vs Bank injections is a matter of EPA really...

hehehe

[Morton]

The EPA can belt it right up their ...

[HoZy]

The EPA can belt it right up their ...

Thats what my VN used to say with it's Extractors - Tip Flow technology...

[Morton]

That VN blew chunks, but DAMN it was fast. I miss that car ^_^

[HoZy]

That VN blew chunks, but DAMN it was fast. I miss that car ^_^

It'll be back on the road eventually... IT HAS PLANS!

[greenfoam]

The ecotec loom and full setup (and a big tune) would be ideal buuut that's one more hassle, 5x more hassle than just putting the motor in. So it just depends how much you want to do

[greenfoam]

This seem to be a common mistake, if you look at the link you posted it tells you that both auto and manual S1 engines are 6 bolts.

Also you mentioned putting V8 infront of a V6 T5, i didnt think you could do this cause of the internals of the gearbox or something?

You can put a 5 litre in front of the V6 T5, but you need to either modify the shaft (shorten the shaft) or extend the bellhousing 1.5 inches? with an adpater, you also need the V8 bellhousing

[DavoVP]

sequential and bank injection ? whats the difference, dont they injecters fire seperatly any way ?

[skyper]

does anyone actually have an ecotec fitted and going in their vn,this is my work car and my experience is in 350 chev's ,i can't beleive all these models don't interchange,i thought i just get a late mod bottom end ,get the pic of the heads and just bolt my old manifold on as i use gas and just put all the old sensors back in it and use my computer,what has holden done,even if i just go vp my flywheel won't fit