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60' time and ET question...

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Old Nov 9, 2009 | 10:54 PM
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Default 60' time and ET question...

Is there any rule of thumb on how much your 60' time changes your ET?

I have a bolt-on FRC and on 3 year-old takeoff Michelin PS1's I cut a 2.13 60' time(went 12.81 at 113 on that run). They wouldn't hook on anything past a 2500rpm launch and was losing serious traction on the first 2 shifts.

Horrible I know. I don't have any money for DR's but do have some fairly new Nitto NT05's on the car now. Will my ET change significantly if I get that 60' down to 1.9-2.0 or so?

Last edited by Kappa; Nov 9, 2009 at 11:02 PM.
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Old Nov 9, 2009 | 11:05 PM
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i swapped to nitto drags and pulled a 1.80 down from 2.1 dropped 3.5 to 4 tnths off each run depending on my shifts, so dropping the short time will definitely show
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Old Nov 10, 2009 | 06:24 AM
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Your ET will definitely improve. Just how much is hard to say. I HIGHLY recommend that the next "mod money" you decide to spend is on good drag tires. THEN your ET will change significantly, and you lessen the chance of wheelhop and broken rear parts.

For reference my bolt-on car(making only 333rwhp) went 12.151 @ 114.63 on a 1.825 then did 11.958 @ 115.06 on a 1.773 on the same day in the same DA.
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Old Nov 10, 2009 | 07:01 AM
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0.1 in RT ~= 0.2 in ET
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Old Nov 10, 2009 | 05:09 PM
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Originally Posted by clemsondave
0.1 in RT ~= 0.2 in ET
Dave,I think you meant to say that a .01 improvement in 60' will equal approximately a .2 improvement in ET. As we all know RT can determine the winner or loser of a race,but it does not affect the ET.
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Old Nov 10, 2009 | 05:11 PM
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Originally Posted by 98vettedave
Dave,I think you meant to say that a .01 improvement in 60' will equal approximately a .2 improvement in ET. As we all know RT can determine the winner or loser of a race,but it does not affect the ET.
lol, yep. Brain to finger disconnect.

But you did it too! It should be 0.1 in 60' = 0.2 in ET. Not 0.01 to 0.2.
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Old Nov 10, 2009 | 05:15 PM
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Originally Posted by clemsondave
lol, yep. Brain to finger disconnect.

But you did it too! It should be 0.1 in 60' = 0.2 in ET. Not 0.01 to 0.2.
Never was good at math.
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Old Nov 10, 2009 | 05:36 PM
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Originally Posted by clemsondave
lol, yep. Brain to finger disconnect.

But you did it too! It should be 0.1 in 60' = 0.2 in ET. Not 0.01 to 0.2.
That rule only works for good drivers. I get 1 for 1.2

Ain't funny !

Pitt
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Old Nov 10, 2009 | 06:06 PM
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Originally Posted by pit-man
That rule only works for good drivers. I get 1 for 1.2

Ain't funny !

Pitt
Yeah,that 2 for 1 ratio never worked for me either. Guess I can't drive too.
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Old Nov 10, 2009 | 06:12 PM
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Originally Posted by clemsondave
lol, yep. Brain to finger disconnect.

But you did it too! It should be 0.1 in 60' = 0.2 in ET. Not 0.01 to 0.2.
Never knew that, but it's dead on.

I went 12.000 with 1.85 60', then 11.804 with 1.75 60' at MIR.

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Old Nov 22, 2009 | 12:55 AM
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Originally Posted by j0n
Your ET will definitely improve. Just how much is hard to say. I HIGHLY recommend that the next "mod money" you decide to spend is on good drag tires. THEN your ET will change significantly, and you lessen the chance of wheelhop and broken rear parts.
Took your advice and bought some MT ET Streets(275/40/17) on some C5Z wheels. My wallet wasn't too happy but I was.
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Old Nov 22, 2009 | 10:36 AM
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I have generally found that 0.1 in 60' = .15 in ET.
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Old Nov 22, 2009 | 11:28 AM
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Originally Posted by Kappa
Took your advice and bought some MT ET Streets(275/40/17) on some C5Z wheels. My wallet wasn't too happy but I was.
That's great man. Now get out there and rip on it!!!
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Old Nov 22, 2009 | 08:04 PM
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Originally Posted by Kappa
Took your advice and bought some MT ET Streets(275/40/17) on some C5Z wheels. My wallet wasn't too happy but I was.
How your cooking!
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Old Nov 22, 2009 | 08:08 PM
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Originally Posted by 98vettedave
How your cooking!
Not how but NOW youre cooking he says!
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