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Location:
Bangkok, Thailand
Registered:
February 2003
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3t-eu ecu to 3t-gte ecu conversion
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Sun, 16 February 2003 15:14
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Hello.
Ok... I am running a volvo B20 with a 3t-eu fuel injection system now. (ok ok...I know it isn't toyota.) I am planning to change the ecu to a 3t-gte unit. (my friend is offering me one.) And I also have a turbo laying here... it'd be cool to use some of the 3t-gte pressure switch features...hehe.
Here comes the question, since the GTE is double plugged... does it receive the same signal as the other ecu... (the 3t-eu injects once per 2 ignition pulses)
Does the reluctor on the 3t-gte's dizzy have 4 peaks or 8 peaks... (I was thinking of 8 since it's double plugged... but then again, it maybe 4 since both plugs have to fire at once...)
Cheers...
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I supported Toymods
Location:
melbourne.victoria.austra...
Registered:
June 2002
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Re: 3t-eu ecu to 3t-gte ecu conversion
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Sun, 16 February 2003 21:29
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3TGTEU has a different dizzy dude - 8 plug outlets on it.
i'd search for the 3TGTEU efi computer and loom and go from there.
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Location:
Bangkok, Thailand
Registered:
February 2003
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Re: 3t-eu ecu to 3t-gte ecu conversion
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Mon, 17 February 2003 04:58
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Yes, I know it has 8 plugs, but both plugs fire almost at once...(Something like a few degree difference.) so I'd expect it to have a reluctor with 4 peaks and that the second spark is generated by the ignitor. (Which is the reason why the ignitor has 2 outlets, one to the coil; to get two sparks. And the other to the ignition signal of the ecu.) I'm just guessing all this.
Can anyone open the dizzy cap of a 3t-gte and look at the reluctor to see how many peaks it has....
I have a 3t-gteu wiring loom and all the stuff to it, except the distributor. (what a bummer.) I actually have quite a few looms, spare engines, and some complete manifolds.
Anthony.
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Registered:
June 2002
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Re: 3t-eu ecu to 3t-gte ecu conversion
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Mon, 17 February 2003 05:10
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Elfunc is right,
the 3tgteu reluctor has 4 points the standard setup simple runs a duel channel moduel to fire the two coils, simmilar to a CA20 setup except dwell control to some extent and the second module droups out after something like 4000rpm. Runing a single chanel module will work no worries, the 3tgteu computers ignition pick up is essentially just connecting to one coil so no worries there. I think your setup will work find, may need a little bit of buggering to get the A/F right but with the correct size injectors and a twiddle of the air flow meter you will be right. But make sure you hook up the pressure switch.
Roger
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Location:
Bangkok, Thailand
Registered:
February 2003
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Re: 3t-eu ecu to 3t-gte ecu conversion
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Mon, 17 February 2003 06:59
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Cheers Roger!!!!!!
That's just what I wanted to hear! This is gonna be great fun. I'm gonna go to my friend's now to pick that ecu up.
I've got access to heaps of injectors...and I've got a bunch of air-flow meters laying. Now I just gotta pick the right combination.
Thanks again!  
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Registered:
June 2002
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Re: 3t-eu ecu to 3t-gte ecu conversion
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Mon, 17 February 2003 22:14
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From what I have seen and my experience with the 3tgteu and other ljet systems you can use a toyota 2se ( the leaded version) air flow meter with no problems ( I have done this before ) from the measurements I made on bosch ljet ( they are almost all the same I know fiat stuff measures up good, and I assume that Volvo, BMW etc will work based on the fact that the pin out is the same from the ones I have looked at and they have the same VC and voltages. The resitors on the meter are the only things that change, but as I said I found no difference between a 2se, and the 3tgteu, and also a fiat one measuring at about ten point along the resistor curve.
After all the nippon denso/ljet is simply a bosch licenced l jetronic system. So all ljet sensors are interchangeable including the air flow meter from what I have found. This is why I suggest people use the 2se system if the want ljet on there 18rg or 2tg motors although a little primitive its readily avaliable and you get the same functionality as the original.
Roger
Roger
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Location:
Bangkok, Thailand
Registered:
February 2003
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Re: 3t-eu ecu to 3t-gte ecu conversion
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Tue, 18 February 2003 07:52
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Humm... 2s-e are actually quite hard to find here (But the 4S are quite easy to find...) , while 2t-geu and 3t series are very common, and everyone are dropping them out of their cars. (the price to overhaul an engine is pretty much the same as buying a new one from the wrecker...)
But for now, I am just gathering as many L-jet related parts as possible to match the perfect combo for my car...hehe. (got a few airflows from various toyotas, intakes, injectors...etc.)
Cheers.
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