Hellcat and R/T track fun

[vortecd]

The FAST series had a track day today with DA looking to be -800. Scales were not on but it should have been close to what it weighed 2 weeks ago 4590 lbs. Well my 1st pass my Kestrel was showing -300. Online it says it was more but I go by the Kestrel, that is why I bought it I was able to make back to back runs like I did in the spring and it picks up on the 2nd pass every time. First pass was 10.59@129 1.54 60. I didn't get a good burnout on my 2nd pass and it spun so I came back around for a 3rd run and went 10.52@131 1.53 60 ft. The runs were made in 8 minutes.
The next round an hour later DA was showing -100 and I went 10.58@132 1.55 60 ft followed by a 10.51@130.55 1.51 60 ft. Runs were made with in 4 minutes. Last outing another hour later DA now said +75 and I ran 10.55@131 1.53 60ft and the 2nd pass 10.51@131 1.51 60 ft. I went back to try to do a 3rd and they decided to drag the track so I called it
Jon hooked up his computer and data logged some runs. Probably should have done all but just did the first 3. So he can post what he saw

Magic number today was 51. I had a new best time 10.51 and new best 60 ft 1.51

Tomorrow taking the Challenger R/T out. I swapped the wheels over and we will see what it does. Had it out 3 years ago and went 12.91. The DA will not be as good but it will be lighter

 

[DavidKFla]

Where are you with DA like that?

 

[Hpindy]

Following along

Sent from my BBF100-2 using Tapatalk

 

[vortecd]

Where are you with DA like that?

Michigan. Our track is at 750 ft. Today temps were in the 40's to low 50's with the barometer at 30.35. Not uncommon to see -200 this time of year

 

[DavidKFla]

Michigan. Our track is at 750 ft. Today temps were in the 40's into low 50's with the barometer at 30.35. Not uncommon to see -200 this time of year

Our race season is just getting started here. Pouring rain and in the 60s today...

 

[vortecd]

Another thing I found today, my car likes leaving close to idle. I normally stall it a little and try to flash the converter. My first pass of the 2nd series I stalled it pretty hard, had to well past 1500 and had a 1.55 60ft. When I made the next pass I was just above idle and had the 1.51

I have found on other cars this has also worked the best for me. Also if you are racing and stall it up you have a chance of pushing through the lights. Coming out softer you never have to worry about that

 

[DavidKFla]

 

[moparjim]

Another thing I found today, my car likes leaving close to idle. I normally stall it a little and try to flash the converter. My first pass of the 2nd series I stalled it pretty hard, had to well past 1500 and had a 1.55 60ft. When I made the next pass I was just above idle and had the 1.51

I have found on other cars this has also worked the best for me. Also if you are racing and stall it up you have a chance of pushing through the lights. Coming out softer you never have to worry about that

Congrats. That is an awesome 60' time.
Now you know why I leave at low rpm.
Great job on the new PB's.

Fwiw I went to Mexico down the street and did a test run. I just checked da was around -1200. A few hours earlier it was -2000.
I will be heading to the track on Sunday as I don't think I can make it tomorrow.

Have fun

 

[BULL]

...I just checked da was around -1200. A few hours earlier it was -2000.

I hate you...


; )

 

[SilverBillet]

The FAST series had a track day today with DA looking to be -800. Scales were not on but it should have been close to what it weighed 2 weeks ago 4590 lbs. Well my 1st pass my Kestrel was showing -300. Online it says it was more but I go by the Kestrel, that is why I bought it I was able to make back to back runs like I did in the spring and it picks up on the 2nd pass every time. First pass was 10.59@129 1.54 60. I didn't get a good burnout on my 2nd pass and it spun so I came back around for a 3rd run and went 10.52@131 1.53 60 ft. The runs were made in 8 minutes.
The next round an hour later DA was showing -100 and I went 10.58@132 1.55 60 ft followed by a 10.51@130.55 1.51 60 ft. Runs were made with in 4 minutes. Last outing another hour later DA now said +75 and I ran 10.55@131 1.53 60ft and the 2nd pass 10.51@131 1.51 60 ft. I went back to try to do a 3rd and they decided to drag the track so I called it
Jon hooked up his computer and data logged some runs. Probably should have done all but just did the first 3. So he can post what he saw

Magic number today was 51. I had a new best time 10.51 and new best 60 ft 1.51

Tomorrow taking the Challenger R/T out. I swapped the wheels over and we will see what it does. Had it out 3 years ago and went 12.91. The DA will not be as good but it will be lighter

What was your best 1/8th ET and mph?

 

[vortecd]

1/8th mile was 6.75@104

 

[jonx96]

I’m tired from working on the car I’ll post the logs in the morning. He hit 98% injector duty cycle… lambda was like .77 if I remember right. Actual torque and expected torque were at the same point at the 1, 2 shift. I’m guessing the cats making it run a little rich. He also barley spent any time in second gear im guessing from the tqm he said he felt that shift acting funny.
I think if it wasn’t for this all happening he’d seen some 1.4x passes.
I can’t believe the injector duty cycle! I can’t remember the stock PE number lll look in the morning but I thought it was around .83 or .84.

 

[moparjim]

I’m tired from working on the car I’ll post the logs in the morning. He hit 98% injector duty cycle… lambda was like .77 if I remember right. Actual torque and expected torque were at the same point at the 1, 2 shift. I’m guessing the cats making it run a little rich. He also barley spent any time in second gear im guessing from the tqm he said he felt that shift acting funny.
I think if it wasn’t for this all happening he’d seen some 1.4x passes.
I can’t believe the injector duty cycle! I can’t remember the stock PE number lll look in the morning but I thought it was around .83 or .84.

That sounds like what my car does.
That's the reason it will be tuned.

 

[DavidKFla]

1/8th mile was 6.75@104

Your car is tuned?

 

[jonx96]

Your car is tuned?

He is stock

 

[DavidKFla]

I've never seen a stock hellcat run any faster than low 11s around here. Mine ran 11.2s stock.

 

[jonx96]

I've never seen a stock hellcat run any faster than low 11s around here. Mine ran 11.2s stock.

Look at @moparjim holy 60 ft thread

 

[DavidKFla]

Look at @moparjim holy 60 ft thread

I know. Hopefully I can run in some low DA this season.

 

[SilverBillet]

He has made some improvements to the strength of his drivetrain but motor, trans and tune are all factory stock. It’s all about traction and your 60’ time coupled with a good DA.

 

[DavidKFla]

He has made some improvements to the strength of his drivetrain but motor, trans and tune are all factory stock. It’s all about traction and your 60’ time coupled with a good DA.

I'm not having any issues with traction or, knock on wood, the drive train. I'm only lacking great DA and decent temperatures and humidity.