Index Change

[fredjohnston]

The AHFS will impact very few combinations with the new indexs. The HP committees job just got alot easier.

The new Mustangs and Mopars will most likely never see an adjustment.

The proper way to adjust horsepower ratings is to take the average under the index runs of each car/engine combination and average them against each other.

Example: car/engine average for combination X = .95 under index
car/engine average for combination Y = .75 under index

The HP needs to be adjusted for up (raised) for combination X or lowered (decreased) for combination Y.

They aren't reinventing the wheel or performing brain surgery here.

[Michael Beard]

Or they could've just moved the trigger up .15, which is primarily what they've done. It just won't LOOK like a -1.55 under run on paper next time. Now guys can race to 1,150'. Maybe they can put a cone out there for that. Congratulations, NHRA, you've accomplished.... um.... something, I guess.

[Casey Miles]

NHRA could have approached the indexes a different way. They could've just made a valve spring pressure rule that would slow everyone up. Make it so that the pressure can't exceed 150 lbs on the seat. But NHRA doesn't want to work for their membership money which means testing pressures of the valve springs.
Casey Miles
248H (Exceptionally/Slow)

[west coast]

Now Div and Nat open count and alt adjust tracks this will put alot more runs in AHFS. Should of lower the triggers by .3 or more.

[Greg Hill]

Div. and opens only count if you go fast enough for instant hp. 1.25 under the new indexes.

[Mickey Whaley]

so basically the cars that haven't been hit with HP have a huge advantage

[hadtobethere]

Originally Posted by Mickey Whaley

so basically the cars that haven't been hit with HP have a huge advantage

yup, the ones that bagged got their xmas gift

[Lyn Smith]

One good thing to come out of all this is its only going to take 7 tenths under to get into Indy next year!!!!LOL

[442OLDS]

Originally Posted by Lyn Smith

One good thing to come out of all this is its only going to take 7 tenths under to get into Indy next year!!!!LOL

A lot of cars were bagging.I would not be surprised if it still took one second under to get in. Some fast cars were purposely staying home for fear of getting horsepower.

[Chris "drooze" Wertman]

Uhhhh...yeah thats so much cheaper for racers to implement.

So much easier to enforce

So much better for the valve spring companies

So much more convinient for the racer, so much easier for everyone to implment in a timley fashion.

**** why dont we start using restrictor plates like circle jerks do.

Sorry accross the board spec rule irk me off, I saw this in motorcycle racing, I also saw it abandoned

Originally Posted by Casey Miles

NHRA could have approached the indexes a different way. They could've just made a valve spring pressure rule that would slow everyone up. Make it so that the pressure can't exceed 150 lbs on the seat. But NHRA doesn't want to work for their membership money which means testing pressures of the valve springs.
Casey Miles
248H (Exceptionally/Slow)