scmil95eg

Here's something you don't see everyday, thought I'd share.
Jim Stewart is building the engines, they are for midgets (4-cylinder sprint cars, not vertically challenged people), where esslinger fords (highly modified 2.3L pinto engines) and mopars (custom push-rod 4-cyl.) have dominated for decades.

This is a significant accomplishment on several levels: teams now have a very affordable, reliable, mass-produced OEM engine option; several sanctioning bodies have approved it; torque and hp are very competitive despite a 20 cubic inch penalty for having overhead cams - for approx. half the price of the $60,000+ specialized pure race engines they'll be running against. Several cars are committed to running them in 2010. I'm just anxious to see Honda's (potentially) dominate in another arena of racing.
-Scott

king06

iTrader: (1)

Alcohol injection?

Any more details?

boostedcivicsir

its mechanical injection, can be alky or gas.

rons has a great setup too, i havent seen the kinsler before, eventhough i knew of it. i always liked the flying toilet.

scmil95eg

lol Ron's
They don't even use fuel pumps in their systems, they use soda fountain pumps! Eh if you're on a tight budget i guess....

Yes, what you're looking at is mechanical or constant flow fuel injection on a K24.
Metering is done by manipulating fuel system pressure through a series of bypass valves (main, secondary, and high-speed). The nozzles are always 'open' and always spraying fuel, regardless of where the engine is in it's cycle. The orifices in the nozzles and the system pressure is what determines how much fuel is delivered. Since mechanical fuel pumps output fuel in direct relation to engine RPM, the faster the engine spins, the more volume the pump displaces, the higher the system pressure gets, and more fuel is delivered through the nozzles.

This is one of the very first forms of fuel injection, way before any electronics were involved. It's been done like this since the 40's. So simple, basic, and crude, it hurts. Still used on many forms of race cars, boats, motorcycles, you name it. It's the only way to deliver really high volumes of fuel or any amount or nitromethane. Need to deliver 8,000+ lb/hr? No problem.

king06

iTrader: (1)

Why is this used in midgets?

No fuel injection allowed or is it cheaper?

t57b18

very interesting to see this come about in the midget racing world . im very interested to see specs on the motors and i think they ran one of the motors at the chili bowl race and year ago..

1.5Slowmatic

thats awesome. what kind of power do these motors make

scmil95eg

A healthy number between 300 and 400. I'm honestly not sure what I can say, but if you really want to find out, I'd recommend calling Jim Stewart.

As for the oil sump setup - I really don't know much, other than the fuel pump is being driven off the back of the oil pump and a custom pan/pick-up is required because the engine is pitched so severely in the car.

Here are a couple H-series midgets, you can see how angled the engines sit in the car. Since K's spin opposite to H's, the K's intake is facing down which posed a little packaging challenge.

namewasdallas

thats so cool, i wish we had midgets at are local dirt track but nope. they look badass with them huge headers

thatblkguy

kinsler set ups are used to prevent fueling issues during turns (this is what i was told when i was working for TRD and its midget program, 2010 should be fun) the oil pump aswell as the belts and pulleys are made buy CV products from what I can see

bauergold

Badass!

redzcstandardhatch

SO COOL

beavis

Sounds like Honda is gonna dominate another motorsport. Heck yes