HOT LAPPING

Discussion in 'SRT Hellcat Racing Forum' started by PlumTexasCrazy, May 25, 2016.

  1. PlumTexasCrazy

    PlumTexasCrazy HELLCAT LIFE MEMBER Hellcat Car Club HCC Charter Member

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    Can anyone explain hot lapping in detail??? What causes it or how to avoid it??
     
  2. Linda's Hell Cat

    Linda's Hell Cat
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    Lol Well one cause is from the Shear Joy you get from having Fast Fun at the Track, and you just can't get enough of it.
    "Only you can Prevent Hot Lapping" :D

    Some True Street Races will require you to not only hot lap, but not to lift your hood or open your trunk.
    The couple I've attended first part of the race was a 30 mile drive, then come back line up without opening up anything, next 3 times going down the track, must come right back around line up take the other lane come back , winner is closet to ET given in the race. 12.00 11.00 10.00. It's the tracks set up for how they run the race.



    So basically hot lapping is not letting your car cool down, but more importantly not letting the Super Charger cool down.

    If you are at a T&T you can bring ice bags and towels. I also bring big plastic bags for the
    ice bag. In between a run I put the ice bag in another bag on top of my SC with a towel around it. BTW I have not had any problems with plastic melting.
    The SC doesn't have to be completely cool, but this will help you if you are trying to achieve a ET goal.

    Linda :)
     
    Last edited: May 25, 2016
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  3. PlumTexasCrazy

    PlumTexasCrazy HELLCAT LIFE MEMBER Hellcat Car Club HCC Charter Member

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    Linda, thanks for the info!!
     
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  4. dragrcr

    dragrcr Gold Member

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    Yes, basically "hot Lapping" is not allowing your car to cool between your passes down the quarter mile. At most tracks you MUST cooldown because you have to wait in line for so long. But at My Local track when they first open I routinely make my first 3 passes in 20 minutes. Example as follows from last Thursday with a 1.5 hour cooldown at 75 deg ambient.........7.016@100.01 then 8 minutes later 7.091@99.28 then 11 minutes later a 7.154@98.33. Later that night I ran a 6.921@101.21 with a 1.5 hour cooldown, so you can see how the cooldown and cooler ambient (65 deg) affect performance. With a 65 deg ambient temp my car likes about an hour to 1.5 hours cooldown with the hood open between passes. I never ice my Blower. Once you go beyond this hour, you are at a point of diminishing returns. By the time I get to 2 hours I am certain my car will be slower (but not as slow as hot lapping), probably because of cold oil temp.

    At the Red List Event in Bakersfield I did 27 passes in 7 hours (and that included one 35 minute lunch and two 20 minute track preps) and a few times when I got back to the lanes I was able to go right back out and make another run without any delay. There was probably at least one period of 2 hours where I never shut the car off or opened the hood. It was 85 deg outside and I found that the car was more consistent if I did not turn it off. Turning it off heat soaks it and the coolant loop for the intercooler may bring a slug of hot water around at exactly the wrong moment. Now THAT is hot lapping!
     
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  5. Linda's Hell Cat

    Linda's Hell Cat
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    WOW 27 passes, Lucky :)

    The first time I took my car for 1/4 mile racing was to Challenger Fest 6.
    I drove my car from Pa to Bowling Green, Kentucky. The drive allowed me to gaine all the rest of my miles needed to be able to track race.:D
    The next day during the race I pretty much went back to back 14 passes.
    They keep everything moving along at Beech Bend Dragway.
    There was no time for cooling down. I ran pretty much 11.00's

    These Hell Cats are awesomely Fast Fun!:cool:

    Racing with the mods and always looking for the Best ET, I do cool the SC down with ice for as long as possible.

    Linda:)
     
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  6. MABBRYFL30

    MABBRYFL30 NYS President Hellcat Car Club Gold Supporting Member

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    Thank you Linda for sharing. Good information for us. Appreciate it
     
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  7. dragrcr

    dragrcr Gold Member

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    .
    I was being lazy the last few weeks when the weather was extremely HOT outside. So I took my Truck to Irwindale to race Thursday nights. It apparently scared away a lot of folks because there were not many Guys and Gals racing at 5PM when they started........So, it was 98 deg outside and I did 13 passes in 59 minutes. Now, THAT is Hot Lapping...

    .
     
    Last edited: Aug 11, 2016
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  8. BODUKE

    BODUKE Gold Member

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    That's a lot of passes lol.
     
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  9. wwbill617

    wwbill617 SRT Hellcat Supporter Gold Supporting Member

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    has anyone looked at a way to cool down the intercooler fluid? maybe run a hose thru an ice bath in another container?? I know we do something like that with our twin turbo Mustang at the strip.
     
  10. BULL

    BULL ________173.7mph_______ ___2016 Colorado Mile___ Gold Supporting Member

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    One of the vendors here on the forums sells a I/C cooler cooler...

    It mounts in the trunk and you fill it with ice...
     
  11. BULL

    BULL ________173.7mph_______ ___2016 Colorado Mile___ Gold Supporting Member

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    Hot lapping at circle tracks is very different....
     
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  12. 559hellcat

    559hellcat Silver Member

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    dragecr, are you planning on attending the upcoming redlist event on Aug 20th?
     
  13. dragrcr

    dragrcr Gold Member

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    Yes I will be there.

    .
     
  14. dragrcr

    dragrcr Gold Member

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    I just did 9 passes in 51 minutes and it was 96 degrees outside when I started. That might be a record for a Hellcat. Times are posted in another thread about the Torco Accelerator octane booster. The car will typically fall off quite a bit with our 91 octane gas. The octane booster does help.

    .
     

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