Quad throttles

[Lloyd]

Alright, just wanting to clear something up. Every time I hear someone talking about putting quad throttles onto a 16V head I always seem to hear something along the lines of "Oh, and you'll need a different ECU". Why exactly do people think this?

[vvega]

different size injectors

v

[Lloyd]

Ah, thats a semi-logical reason. Hardly justifies a complete ECU replacement.

How goes the 20V 7AGTE btw? Hopefully get some pics of my 20V turbo motor tomorrow

[ChaosAD]

According to Club4ag they require more fuel at full throttle and less fuel at low throttle (compared to the standard manifold). Thus requiring a replacement ecu.

However if you search the club4ag website there are people running them with standard computers.

Whether they actually gained any power from the conversion is a different story.

[toyonut]

Are quad throttles it a worthwhile conversion?
I want to adapt 20v quads to my 3sge, is it possible?
the only other problem is that the 3sge is mounted in a MR2 and as such has not a lot of room, but a measuring tape should solve this problem.
I have read that the boosted performance ute has a 3sge with the levin quads and runs fine with no tuning.
I dont think it should be too hard to adapt the throttles to the manifold (i can play at work on the weekends), and the pipework to the manifold should be easy to sort out because i appear to have no AFM even though it is a 1990 model.

[Adamal]

Karl Skewes has put 20v silvertop quads on a 3SGE before.
Theres some documentation on his website, can't remember the address though.
He had it running in an FR setup, so there would have been a bit more room... If I recall, he had to customise a mounting bracket for it.

[Drifter4ag]

visit the website and look .. www.garagedori.com

20v throttles on the 3s were great .. very powerful
i run 20v throttles on a big port 4age
using standard injectors are fine .. long as your manifold will let you get away with standard rail like mine does. And run a 2nd or 3rd gen Apexi superafc or something as this has enough scope to tune out any inconsistencies
Results on mine were pretty average but i would expect better with a decent motor ie not a dead/dying engine (mine loses around2-3kw
@wheels permonth) so from changing to quads i gained about 4kw@wheels on this motor. On a good motor i would expect anything up to 10kw@wheels with right tune.
Response is the main thing oh .. and it sounds freaking wicked

[ChaosAD]

How did you hook up the map sensor?

[Lloyd]

There are a couple of hoses hooked up to all throttles so a MAP sensor feed isn't an issue.

[ChaosAD]

But what about the vacum spikes? do you just use a buffer? like a fuel filter or some other restriction?

[Silent Knight]

Hrmmm I'm very interested with this conversion myself as I am thinking about playing around with Quad Throttles on the 1J.

[Adamal]

Quad throttles on a 1J? Or do you mean individual throttles on a 1J?

[Silent Knight]

Quad throttles on a 1J? Or do you mean individual throttles on a 1J?

I mean alter the Quad Throttles from a 20V to fit on a 1JZ. I've only ever thought about it once or twice but I am really interested to start toying around with the idea.

[rxtoy]

i seem to remember one of the main benefits of quad's being that the throttle body is right next to the inlet so throttle response is heaps quicker. don't know how noticeable it would be.

i'm thinking about having a go at adapting a set to my RWD lancer turbo (need to upgrade the inlet manifold anyway cause its crap single point injection), have to see if i have the time though, already got enough damn projects.

cheers
Matt

[YeMs]

i pulled a set off a silvertop at a wrecker and paid F***all for them. now im considering making an adapter to set them up on my 3tgteu... i guess ill see wen its finished if they make a difference. and if it doesnt really ill sell the design to sum young clown with a 3tgte and tell him it makes a huge difference

[Drifter4ag]

no point if you are running a turbo
just big throttle body and large plenum.

Basically running quads is the same as running carbies minus the restriction of the jets and the fact you have fuel controll to fanatastic levels.. quads let the old bluey rev out to ... even a stock motor can hit 10k

[rxtoy]

why no point for a turbo? should still make a difference, would it be too minimal to bother with the effort (i could bolt up a VR4 inlet manifold, just the throttle body faces the wrong way so i'll have to modify anyway)???

cheers
Matt

[Drifter4ag]

How much power do you want ?
If you are running a 20v head then sure go for it ..
otherwise just run either custom plenum or even standard intake manifold .. you can get in excess of 300hp with standard manifold.