Lateral-g Forums - Jackass w/ LS9: original build and new Jackass 2.0 updates!

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- - Jackass w/ LS9: original build and new Jackass 2.0 updates! (https://www.lateral-g.net/forums/showthread.php?t=17744)

Quote:

Originally Posted by clill (Post 591700)

Has anyone seen my car ? I loaned Jackass back to Stielow because he said he wanted to take a couple measurements. Now I get emailed a link to this thread and look what he has done...I bet they found french fries and Nerds under the seat. I can't believe you parted out my car.

:lmao: Great response, Charlie.

I really do like that this car is getting an update.

Quote:

Originally Posted by Sideshow (Post 591704)

he wheels were super cheap on the black Friday sale. especially for forged wheels. Kinda unheard of.

They are very nice wheels, especially for the cost, but they are not a true forged wheel. They're "rotary forged flow-formed.

The center of the wheel is essentially a cast wheel with hoop properties that are similar to a forged wheel. Stronger and lighter than traditional cast wheels.

William

Quote:

Originally Posted by 71RS/SS396 (Post 591709)

Per Kurt

Here's how you calculate proper injector size to get you at 80% duty cycle;

Expected max horsepower x 1.2 x .5 for n/a ( .65 for boost) divided by the number of cylinders.

Example for 800 n/a : 800 X 1.2 = 960 X .5 = 480/8 = 60 so you would need a 60 lb/hr injector for an 800 hp n/a engine.

For those of you (like me) that like units on their numbers (sorry, it was pounded into my head throughout my academic career) here is a good description with units of measure.

Information is from this site - - http://www.rceng.com/technical.aspx

Selecting the Proper Injector Size

In order to select the correct size injector for your application, you might wish to use one of the following formulas.

In most cases a naturally aspirated engine will have a B.S.F.C of .50. This means that the engine will use .50 lbs. of fuel per hour for each horsepower it produces. Turbocharged engines will want to be at .60 lbs. per hour or higher.

Using these numbers as a guideline, you can select the approximate injector size in the following formula for a four cylinder, naturally aspirated engine at 200 bhp.

Most injectors will max out at 80% duty cycle and this is the accepted industry standard.

B.S.F.C is brake specific fuel consumption - How much fuel you are using per horsepower per hour

http://www.rceng.com/images/rc/formula-1.gif

http://www.rceng.com/technical.aspx

Quote:

Originally Posted by will69camaro (Post 591765)

oops. sorry to mislead anyone.

Quote:

Originally Posted by Sideshow (Post 591797)

oops. sorry to mislead anyone.

Not a problem, just keeping it technical in here :)

Several friends have forgestars and they're a great wheel for the money. They're solid "middle ground" wheels IMO.

William

Quote:

Originally Posted by NvrDun71 (Post 590910)

Not to get this thread derailed too much or off-topic, but what is the highest flowing GM injector? Stock Ls9?

Common LS injectors sorted by size (flow rated @ 3 BAR or 43.5 psig)

So yes, LSA/LS9 injectors are largest stock GM port fuel injectors.

The plan is coming togther. Matt at Sled Alley is working on JA and Thomson Auto has the short block just about done.

Geez this cars moving along fast!

Watching this one

Quote:

Originally Posted by Stielow (Post 591991)

The plan is coming togther. Matt at Sled Alley is working on JA and Thomson Auto has the short block just about done.

Prepping it for a vinyl top? ;)