Unconventional 2JZ possibilities

[gttwinturbo]

Looking at replacing my 1ggte with a 2JZ-GE na-t setup in the near future. This got me thinking, other than the tried and tested methods of big turbo, standalone etc what other setups could feasibly be created with a 'reasonable budget'. Searching around I found a handful of ITB setups (non-turbo) which was interesting but I also discovered that bike carbs are being use in some circles (Peugeot 106's, Vauxhalls, Lotus 7 type kit cars etc).

Apparently bike carbs like those on Yamaha R1's can be had quite cheaply and I'm aware that people do turbo bikes so it should be possible to do a blow through turbo setup using 6 bike carbs on a custom intake manifold. But what of the ECU, will it be able to simply run the ignition only? What would the characteristics of the engine likely be, responsive, peaky, more lag, less lag (than an injected setup)?

Just to be clear im not looking for definitive answers per-say just the speculation of others based on their experience or just random thoughts and opinions of what the challenges and outcomes of such a setup might be. I'm well aware that a more conventional setup would likely make bigger dyno numbers, be more drive-able, more fuel efficient, easier to tune and all around 'better' but I just want to hear the thoughts of others.

[love ke70]

reasonable budget, 6 bike carbs on a custom intake manifold and tuning 6 individual carbs to all act the same, to me is sounding very very difficult and expensive, which blows your reasonable budget out of the water. the amount of time and effort that would go into just sorting the linkages and jetting on those carbs would probably cost what a tuned standalone would.

I love the idea, but I fear the cost...

Cheers, Andy

[lexsmaz]

I agree with love ke70, would end up costing a lot of money in the fabricating of everything & dyno tunning unless you do all the fabrication work your self & have a mate that can do the dyno work, plus you have the cost of a Turbo & some sort of engine management & in the end i could not see the power any better if not a lot worse than a 2jzgte, only slight advantage you have is higher comp on a NA to start with ... I would personally just be going a 1jzgte if the money is tight, or a 2jzgte straight up if you can afford it ..

[celicapain]

unconventional = expensive either in money or labour- usually both.
with that said..
If you wanted to machine up a custom manifold to suit a set a slide carbs, linkages and fuel system+management modifications etc i would support you for sound alone it would be awesome!
Other than that it would be inferior in every way to the original injected set up.

You can make big power relatively economically with a turbo LPG set up, cheaper than with an equivalent petrol system.
Its wont be as responsive or tuneable as a proper injected setup but it does the job provided you accept its inherent limitations.

If I was going to try for a budget high hp bomb engine id start with a 1/2jzgte for the internal strength, get a s15 turbo and a truck turbo, a shit load of steampipe and piece together a compound turbo setup-all pushing through 2 or 3 GRA throttle bodies with MSD or similar ignition system I reckon you could piece it together yourself for under 4K. May make 600kw. may explode - either way entertaining!
For added cool points funnel it all through a Allison auto and rear end out of a mini truck(must have duellies) . put it in a Toyota lite stout. win.

[gttwinturbo]

Thanks for the replies. The more I think about it the more I think I should probably save carbs or itbs for my mx5 and go with a simpler setup for the Supra.

[slipway]

gtr throttles, already come in 6, has been done to 2jzge before there is a thread on it somwhere.

[gttwinturbo]

Yeah I've seen a 2jz-ge Mk4 Supra running black top 4age throttles. I got to drive my friend's ls400 today, kinda makes me think of using a 1uz instead but turboing them seems significantly more involved.

[Hurricane]

what power are you looking at making?
will a stock 1JZgte not do the job?
can a 2JZ be ran off a 1JZ loom and ecu setup?


ive done the whole 'carby trubo cos its cheaper' on my 3tc, it wasnt that cheap and i bought a secondhand Haltech setup for the same price.

Just keep your eyes open for a standalone. a Brand New Haltech 1000 just sold for $626 US on ebay just yesterday (i just missed out on it)

dan.

[love ke70]

only carby turbo worth doing is LPG and I went away from that when chasing more HP.
EFI works too well to walk away from it.

dedicated LPG injection would be cool, have awesome drive-ability and power

[Ken_T]

Do a twin turbo 2JZ, like this:


Other stuff you don't see everyday is supercharged 2jz with a twin screw. Even better would be twincharging (compound, not one then the other typ'a setup) but costs are gonna come into question here.
Multi-point LPG injection is sweet too.

[slipway]

another vote for twin charging

[SillyCarS]

hahaha - slipway: i love how quickly BUDGET goes out the window in toymods. That ^^^ thing is freaking sweet!!!

[Shakotan_Aaron]

If your turboing probably wouldnt worry about gtr throttles. quite often they are ditched for a single throttle when tuning for higher numbers. my stock 2jz turbo is quite responsive compared to other turbo cars ive driven. with the sequential you have boost from 1800rpm.