Last Wednesday I went up to New England Dragway and met up with George (Blazing Saddles). I made 4 runs, all about 20-30 minutes apart and did 14.471@98.33, 14.675@98.67, 14.477@95.99, 14.479@98.39. Pretty consistent right?

Then I parked the car and let it sit for about an hour and a half with the hood open. When I came back the engine was dead cold. I got back in line and pulled the best run of my life at 14.109@101.13. I did nothing different than what I usually do. I did the same burnout and launched the same way as always.

I guess the key is keeping the engine as cold as possible. Now I know why George put in that electric water pump. Engine temperature is key. These cars just don't cool down fast enough.

Right after I did this great run my engine was super hot and I could barely touch my K&N intake. I got back in line to race George within 15 minutes of my last run. My engine choked on launch, suffering from the "hesistation after deceleration" BS everyone talks about. I did a 15.366@91.86. I am suspecting that the "hesistation after deceleration" is caused by hot engines choking on hot air inside the engine compartment.

What do you guys think?

 

Heat Soak is what your engine is experiencing. It can be seen during long dyno sessions and drag duty. The '05+ will always be known for this above all other issues me thinks.

The trick is to bring a cooler with packets of ice for your intake, it helps a ton between runs with hot outside temperatures.

-Dan

 

My best time so far is 14.0 with just flowmasters. Stock air box and all.

 

Heat soak is definitely a problem. But, from my experience, I can "hot lap" 3 or 4 runs, and see about drop off of maybe .01 - .03 per run. But, if it sets for 20-30 minutes or so, it cools off pretty well (at night, anyway). And yes, I gotta get me an electric pump, too!!

BTW, on your last run, did you have TCS turned off? Sounds like maybe it wasn't.

 

yeah it was off

 

I would be extremely surprised if heat soak caused you to drop off by almost a full second. I sometimes make as many as 6-7 passes in an hour, and have never seen ETs drop by more than a tenth or two.... from the first pass to the last one.

 

I'm almost positive it was off

 

I did about 5 runs in an hour, and stayed between 13.7 and 13.8 at 102 to 103 mph, and it's an automatic.

 

If you are on stock tires, don't do a burn out. Just drive around the water. If you get some semi-racing tires or slicks, then do burnouts.
My times when down when is stopped doing them.

 

I never thought about the heat myself, could explain why both times I've gone to the strip so far I've got my best time on my first run. Its about a 30-45 minute ride to the strip from my house so the car is nice and hot when I get there. I will have to let it cool down and see if I can shave a few tenths off my time.

 

Does anybody have 1/8 times?

 

I run almost exclusively at 1/8-mi tracks... best run so far for me is 8.811.

 

1/8 mile............8.14@84.71

 

8.14...wow! That's quick. Very quick. Have you ever run it without the MTs? Auto or stick?

 

Wouldn't you be going the wrong direction then?

 

:worship: :worship: :worship: