1/8 mile to 1/4 mile conversion?

[dieselduck]

Went to an 1/8 mile track today, 1st time ever. A lot harder that it looks hitting a reaction time. Anyway my best time was 8.1958 @ 86.03 mph. Is their a formula to convert this to 1/4 mile? Just curious, I think it would be mid 12's. What do you guys think?

 

[BlakeW]

TimeX1.55 is usually close to the 1/4 time.

 

[Rich Buckley]

Roughly 12.69

 

[dieselduck]

Thanks guys

 

[Subman631]

This is a pretty handy site

http://www.wallaceracing.com/etcalc.php

It calculates your 1/4 times quite a bit different using the 1/8 mile et then the 1/8 mile mph.

 

[UNBROKEN]

My truck was always spot on at 1/8 mile et x 1.53

 

[12vriviera]

I use this. http://www.thelothridgefamily.com/DragGuess.html
Lot more than just a number.. Will sere how accurate it is next weekend for my stuff.

 

[Big Blue24]

I use this. http://www.thelothridgefamily.com/DragGuess.html
Lot more than just a number.. Will sere how accurate it is next weekend for my stuff.

I too have great results with this calculator. It's really accurate, even on runs I have full numbers for. It's also handy to verify that your incremental times match each other. For example, if you input your 330' and 1/8th mile ET, the 1000' and 1/4 ET should calculate correctly. If the split time from 1000' to 1/4 is the least gain or doesn't match the other split times, usually it's a sign of being gear bound, defueling, high pressure-only boost leak, tranny slippage, etc.

 

[Duramax3000]

My best 8th was a 8.29et and the 1/4 mile et for that run was 13.05 et,