Went down to Bowling Green on Tue night. Car responded as follows:

300 jetting:

60' 1.328
330' 3.954
1/8 6.173 @ 111.12
1000' 8.103
1/4 9.748 @ 136.79

The car was running out of gear about 125 feet from the finish line, from that point to the traps it was on the 7500 rev limiter.

Were gonna try to go with 4.10's and get to the track again ASAP to see if it helps.

The car also went a 9.92 @ 135.96 on the 150 jetting.

 

Nice times. I guess a stock LT1 crank can handle some serious power.

 

Hey Kurtis you been keeping that list updated?

Damn there are a lot of people hitting the 9's now!

 

Curt,

Honestly I've kind of kicked it to the side. I was just takin too much flack for validity of times, what qualified to be on the list etc.... Not worth the effort to get jacked around for it.

Twisted,

According to my calculations I still come up with about a 9.6x ET realize that you aren't gaining much ET at the big end of the track..... JMO but physically weigh the bottles after each pass, and find out if the system is actually flowing the nitrous you think it is. Then it begs to wonder if the engine just pushing it out the Exhaust port. 3 tenths isn't much gain for that much larger of a pill. This is a TNT system correct?

Congrats guys!

Kurtis

 

but he said they were on the rev limiter the last 100-150ft, and i would assume the nitrous shut off a couple hundred RPM before that. so im sure it would drop some more ET on the bigger shot after a gear change

 

Daren,

In all reality there isn't much ET to be made when you're going 140 mph and you're only 100ft from the traps.....

Very simple formula: 6.17 x 1.56 = 9.62

Not an exact science, but its amazing how close it'll put you to the end ET.

I'm not trying to take anything away from Jason's car if it sounded that way, I'm actually trying to help.

Kurtis

 

i understand that, i was just thinking maybe the nitrous was shutting off quite a ways before the 1/4 since it should be shutting off before he hits the rev limiter. but i see what you are saying now about the 1/8 time not really being much quicker than it would have been on that 150hp shot run.

regardless, killer times hopefully he gets the gearing taken care of soon and we can see what its got in it.

btw, i had a similar problem last year. my car picked up very little on a 200hp shot compared to a 100hp shot. never really pursued it to see why

 

Kurtis,that does work good for nitrous and N/A cars,but it doesnt work out for (at least my friends) SC'd car.

87 Formula,406 ATI F1R SPearco etc etc etc,6.12@118,9.39@149 on the first pass with the new combo.....cant wait to lean it out and get it to hook.

 

Kurtis-

It is a TNT system.

When Jason dynoed the car last year after the NFRA event the pulls showed that the car was only gaining about 70 RWHP going from the 150 jetting to the 300. Car made a huge jump in WHP going from the motor to the 150 spray.

We both think the car has some lower ET's in it, considering he shifts it at 6700. Keep in mind I said he was on the 7500 rev limiter 125 feet or more before the traps, which means the car wasnt really making any power from about 3/4 to the end of the pass. Even on the 150 shot pass he was coming across the traps tight, around 7200. Another point to look at is the car only picked up .04 in the 1/8 on the 300 shot, his previous best was a 6.21 (150 shot) which calculates to mid 9.6 also.

In the end there is only one way to find out..Were gonna swap the gears and see what happens!

Thanks

 

Dirk,

That Formula sounds wicked! Let us know when he gets the drivetrain and/or chassis sorted out. Notice he went the same 1/8 mile time but a whole 7 mph faster then Jason W. Hes making some serious power to the eighth, just time to launch the car.

twisted,

Somewhere either in the Nitrous system or in the engine (Heads/Cam basically) there is a restriction.

Next time you guy go to the trackj, try to dig up a really accurate scale and let us know what you find...... This will tel you if the system is flowing the nitrous its supposed to be. There are a few places to look. Keep in mind of the Nitrous side isn't flowing correctly, you still have the fuel, and will now be running overly rich.

Good luck! Man that car is rockin! Is that still the stock crank, same as last year?

-K

 

I seen the Jason and the car at the NFRA last year.... that car rocks What gear and transmission does it have?

 

great runs man!....car runs simular to mine .....with 2 totaly diff combo's

 

What heads is he running, still the TEA's? How much extra work went into them after they left TEA?

 

Kurtis- He roughly uses 1/2 a bottle on a 300 shot pass.. EGT showed 1525 which is by no means rich. Like I said, give him a chance to show the potential when we swap the gears. The car still has a stock crank and computer...

Hot Rod- He runs a TH-400 and currently has 4.30's

Z-owner- He still has the LT-4 heads stage 2 ported by Brandon Aders @ TEA. Nothing has been done since they left TEA. The exhaust ports havent even been touched, just polished.

Thanks

 

Just curious, if he is on the stock computer, how is he getting it to 7500 rpms? I thought the stock ecu shutdown at 7000. Is there a way around it?