What type of fuel injection is this?!?

[sniper]

Now iv seen this on a F1 motor before but never on a street car






A bit from the artical on this car,

When Toyota decided to compete in the Champ Car Formula Atlantic series, they chose the proven 4A-GE engine as its power plant. The heavily modified Atlantic engines produce 240 natural aspirated ponies and have a redline of 9500 RPM. Hasselgren has been producing these Formula Atlantic motors for nearly a decade and is no stranger to the 4A-GE or the potential these engines have.

What would posses someone to drop a $45,000 engine usually found behind the driver seat of an open-wheeled racecar into a chassis worth less than the price of its crankshaft? Only the owner can answer that question. Speaking with Kevin is like opening up a Toyota encyclopedia. He has so much knowledge and experience regarding this highly sought after motor so it was only fitting that he installed one into his personal vehicle.

Starting off with a 1986 Corolla coupe, Kevin started tearing out all the items that weren’t a necessity (including the stock 4A-GE). Being an employee at Hasselgren definitely has its privileges and with his engine building experience, Kevin quickly started piecing together his very own Formula Atlantic spec engine. “Putting a Toyota Formula Atlantic 4A-GE engine into a Corolla is priceless,” said Kevin. We couldn’t agree more. His engine spec sheet reads like a TRD/Hasslegren bible with tons of unobtainable Atlantic parts. So what does $45,000 buy you? Try 250 ponies to the wheels with 148 ft.-lbs. of torque pushing this waiflike AE86. Not everyone has pockets deep enough to afford a Hasselgren motor, but then again, not everyone has an NA AE86 with 250 whp. One of the dangers of having such a high-output motor is the factory driveline cannot sustain the abuse. After trying numerous configurations, Kevin finally found a TRD racing transmission that was up for the job. A Tilton clutch and flywheel clamps the power and distributes it evenly through a TRD 2-way LSD.

 

[rms]

http://www.hasselgren.com/products.html

Check the price of a rebuilt second hand 4AGE race engine.
Puts the price of modifying a 1UZ into perspective.

 

[sniper]

$30K

wow, that must be one killer 4AG

so whats the deal with this intake system?

 

[cribbj]

That's an external, constant flow, mechanical injection system. Hilborn and Kinsler used to make loads of these for sprint and Indy cars. Those are just open nozzles that constantly squirt fuel into the air horns, which is really about the same thing an EFI system is doing at high rpm or 100% duty.

This type of constant flow, mechanical system isn't practical for anything but an all out, very high rpm racing application.

Jenvey in the UK don't recommend this type of injector mounting unless you're turning 11K+ RPM's: http://www.jenvey.co.uk/Tech_QA.htm#positions

 

[rms]

cribbj,
It is difficult to see in these pics but there is a throttle position sensor at the rear of the manifold and the injector loom attaches to the injectors below the fuel rail. 4AGE Atlantic engines use a Motec ECU not constant flow.
Constant flow injection is useless on a road race engine.

I agree this system is not suitable for road use but neither is the Atlantic engine. Absolutely no power below 8000rpm and rebuilds every 2000klm.

 

[cribbj]

Whoops!!! I completely missed the TPS in that pic. They didn't do a bad job of hiding the injector wiring either; thanks for that & I stand corrected ;-)

I was wondering what such a technically advanced engine was doing with constant flow mechanical injection, although I guess it may still has its place in some circles.... and ovals......

 

[sniper]

I my self did not see any wiring either, this 16V makes an astounding 260HP! The most i have ever seen for a NA 16V 4A engine. I also found that it has a redline of 9500rpm, so they say in the Jtuned article. Why would the motor need to be rebuilt so often? because you are always at high revs? What determines that you need a rebuild? Burnt/worn rings? Pistons? oh ya and they said this motor was $45K

 

[rms]

Why would the motor need to be rebuilt so often? because you are always at high revs? What determines that you need a rebuild? Burnt/worn rings? Pistons? oh ya and they said this motor was $45K

The 9500 rev limit would be to get a bit longer life. A 4AGE Atlantic engine down here is running 10800.

Fatigue life of components before they break determines rebuild time. ALL components have a set time for replacement, including the cylinder block and head.

In F1 the engines must do 2 meetings, they are then thrown in the scrap bin. Nothing is used again.

The TRD 3UZ used in Grand-Am prototypes costs $60k USD plus $18k USD for the fitting kit (ECU etc).

 

[rivmasta]

At first glance I though they were secondary injectors, only used at real high rpm... but with no primary injectors this thing must be pig to drive to work!