2JZ-GTE VVT-i FULLY OPERATIONAL

[5000gt]

the wolf v500 should run vvti also....

I have decided to go autronic after spending an hour chatting to Rod... leaves me money for other things....like turbo's.... and tyres....

[dori dori]

So does the Haltech provide pulse to the VVT solenoid and depending engine conditions or just switches it on at a certain rpm?

yes it varies the signal to the oil control valve which either advances or retards the inlet cam.

[jet81j]

love your soarer
i want a 2j in my cressida now even know i have a 1j. All this talk about 2j's in your zoom mag makes me want one. do you think that VVT i is worth the expense or a non- VVT i would be just as good.

[Norbie]

A non-VVTi engine isn't as good because it doesn't have VVTi.

[dori dori]

If you can find a VVTi 2JZ grab it but i haven't seen many around.

[PlacentaJuan]

i think the cost would be a big factor.

for the extra money you pay for a vvti engine, you could put into a non-vvti and make twice the power.

[Mr Ed]

i think the cost would be a big factor.

for the extra money you pay for a vvti engine, you could put into a non-vvti and make twice the power.

VVTi engines are newer too, less chance of getting a lemon that needs an expensive rebuild.

Difference in price is only about $1000. Seeing as though youd be doing FMIC/exhaust on either engine that $1000 couldnt really go anywhere but a deposit on something nicer (ie turbo/ecu)

Twice the power is somewhat of an exageration. 2JZs are great but it still costs more than a couple grand to get 400rwkw!!!

[Draven]

yeah
based on my calculations, closer to $10k is what's required

[PlacentaJuan]

yea twice the power WAS an exageration, i just assumed people would realise.

when i was looking for a 2j front cut i enquired about the vvt-i version too, i called over 20 places that advertise frontcuts and of the 2 or 3 that said they could get a vvti engine, they were over double the cost of a non-vvti. (but then again i dont have the contacts a lot of you guys have)

put that extra cost into a non vvti 2j and what do you get?

[Draven]

plus you have WAY less issues trying to control the bastard when you start sticking big turbos on the non-vvti

[Mr Ed]

plus you have WAY less issues trying to control the bastard when you start sticking big turbos on the non-vvti

This is why I wouldnt bother with it exactly! Much broader choice of ECUs on a non-VVTi engine

[teamdrinkalot]

yes it varies the signal to the oil control valve which either advances or retards the inlet cam.

Yes, but how does it vary the camshaft position when there is only a 12v solenoid valve which is either on or off?

[Billzilla]

Yes, but how does it vary the camshaft position when there is only a 12v solenoid valve which is either on or off?

They don't - they use a three-position solenoid valve, and that's controlled by the ECU with reads the cam position from another sensor along each cam.

[teamdrinkalot]

They don't - they use a three-position solenoid valve, and that's controlled by the ECU with reads the cam position from another sensor along each cam.

Thanks, but how does a 3 positional solenoid work if it has only two wires? Are the two wires 2 coil windings and they use the solenoid body as the earth/negative?

[Billzilla]

Thanks, but how does a 3 positional solenoid work if it has only two wires? Are the two wires 2 coil windings and they use the solenoid body as the earth/negative?

I guess the power-off position of the solenoid is the nuetral position so oil doesn't flow so the cam doesn't move. Then the ECU would run either positive or negative to either wire as needed to move the solenoid either way to make the oil flow either way ..... ?
Just guessing.