4k Twin Injection

[OniBerserker]

saw this on ebay, I'm not going to link it just wanted to share the idea.

looks like a custom piece of gear, what do you guys think of it?

 

 

 

 

 

 

 

 

 

 

 

this was all the info they guy had up on it

 

The ultimate twin throttle body package for the Toyota K series engine, the manifold will suit 3K, 4K, 5K, or the throttle bodies can be removed and used on anything with a DCOE weber flange on it. This integrated system utilizes a manifold which, unlike the old carburetor manifolds, permit the intake charge a “straight shot” at the valve. Having two individual throttle bodies, these units are not adversely affected by unequal thermal expansion in separate cylinders. If you're looking for the coolest intake system with the best flow, then twin butterfly throttles are the ticket and the ultimate for performance and style.

 

The throttle bodies are made with weber DCOE mounting so they can be removed and used on anything that has weber dcoe bolt pattern.

 

 

* Throttle response and pre-cam power is further improved due to the increased airspeed

* Peak power is increased

* High power Naturally Aspirated fuel injection Engines

* Turbo or Supercharged Engines

* Race and rally applications

* All polished Alloy to Suit mild to wild Show or Street Car

 

Includes :-

 

* CNC Prepared 38mm Throttle Bodies

* 38mm Bell mouth Polished alloy trumpets with stainless one piece clamps

* High capacity -10 fuel rail with -6 fittings

* 330cc injectors

* TPS included

* Lightly ported Manifold to suit k series engine

Edited July 27, 2009 by OniBerserker

[Raven]

Its not a hard one to find on ebay. :)

 

I'll be watching it to see what it goes for :)

[Taz_Rx]

I had a little dabble under $200. Might come back for another bid later. :)

Who else is bidding on it? Guess you are Oni if you didn't want to link it?

[Felix]

Looks good, but I think it needs an extra 2 injectors.

 

Would't you have tuning issues getting even mixture distribution to all cylinders with a firing order of 1-3-4-2 ?

[Taz_Rx]

Looks good, but I think it needs an extra 2 injectors.

 

Would't you have tuning issues getting even mixture distribution to all cylinders with a firing order of 1-3-4-2 ?

 

Yeah little under fueled - Mine are 315cc..... and I have 4x of them. Would probably be a bit on the lean side on a fully worked 5k. Be good on a mildly worked 4k though.

 

You'd just run it as "banked injectors" not sequential.

 

What this setup REALLY needs is a twin!!!! 2x of these would be nuts on a fully worked 5k - Injectors would then be spot on and you could run sequential injection.

And because the manifold is just a sidedraft weber one you just need a twin mani instead of the single. :)

Edited July 28, 2009 by Taz_Rx

[towe001]

I had a little dabble under $200. Might come back for another bid later. :)

Who else is bidding on it? Guess you are Oni if you didn't want to link it?

Nar not bidding, might keep an eye on it but not bidding.

If i went EFI, i'd go quads or, there was someone on the forum that used one of those carby styled throttle body things that had the injectors mounted in it, so i was also thinking of something like that to start with.

With a Megasquirt confuser.

 

Phuck it looks good, but not as good as quads

[Evan G]

wouldnt you need a crank angle/ cam angle sensor to feed the ecu with a input of postion of the engine?

[towe001]

If your going a multi coil setup (eg - commodore v6) then yes, but if your just running the plugs off the dizzy (be it either points, electronic or optical) and the one coil for the dizzy (eg - 4age) then no.

 

 

Having a better look and i started thinking that they looked like Injection Perfection throttle bodies.

 

But after having a google around http://www.injectionperfection.com.au/content/view/21/71/

I'm now thinking modified bike carbies - say, maybe, Harley ?

 

And i kinda doubt the carbies being CNC machined. Looks like casting marks under the trumpets and why are the trumpets welded in ? Maybe CNC modified but not machined...

[Taz_Rx]

You will still need some sort of pickup to the ECU to tell it when a cylinder is firing, so it can pulse the injectors. Need at least either a coil negative trigger or single pulse trigger depending on the ECU.

 

To run sequential injection and/or multi coils then ECU needs to know WHICH cylinder is firing (number 1 and you enter the firing order) through a dual pulse trigger - being either a crank or camshaft sensor.

 

I had a bit of a google for this yesterday searching for "Busted Knuckle Garage" which is a place that makes auto related signs. Couldn't find anything on their site about EFI, so thinking maybe they just make some bolt on covers for this. :D

[philbey]

I did the same search when I first saw these on Ebay, no luck either.

 

To me they look like bike carbs modified for use as a throttle body. The cover plates on the bottom look like they are blanking off where the diaphragm is supposed to go for carbs.

 

whoever buys it needs to get a bunch of info from the seller. I'd love to see this setup with twins~!

[OniBerserker]

nah i wasnt bidding, i just didnt want to put a ebay link in the general mechanical section.

not like it was hard to find though :D

[beerhead]

You got it in one. Every person I've ever heard of using a 1-2 and 3-4 linked ports manifolds on a 4K with a single webber have sold it on. It just doesn't breath right.

 

 

Looks good, but I think it needs an extra 2 injectors.

 

Would't you have tuning issues getting even mixture distribution to all cylinders with a firing order of 1-3-4-2 ?

[OniBerserker]

thats good to know

[Felix]

You got it in one. Every person I've ever heard of using a 1-2 and 3-4 linked ports manifolds on a 4K with a single webber have sold it on. It just doesn't breath right.

 

I'd say it would be even worse unless you could sequential fire the two injectors (for a double back-to-back squirt) to match the firing order.

 

If you batch fired them, the first cylinder of the paired cylinders would gobble up most of the fuel charge, leaving the second paired cylinder to run lean. At least with carbs the second paired cylinder is still able to pull fuel from the carb.