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Thread: ET and MPH
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05-03-2008, 10:10 AM   #17 (permalink)
JN-Motorsports
 
Join Date: Feb 2008
Posts: 62
Re: ET and MPH

Quote:
Originally Posted by n2omike View Post
The mph tells you how much horsepower you are putting down, and the ET tells you how well that horsepower is getting used.

Fast mph, slow et... inefficient car.

Slow mph, quick et... efficient car.

You'd get more helpful data by posting the mph numbers... if you have any.

Amen...... quick times over mph. First to the line gets paided..MPH is for bragging in the pits.
Get the car to 60 foot.. that one 60' was a tenth faster (1.669)than them all and your 330' (4.80) was the fastest. Looks like you lifted. that was a mid 11 pass happening.
http://crayonmedia.com/wayne/Windsor_Forum/TIMES.pdf

You can chase jets all day, Use to do it and it was a pain. Buy a clamp on pyrometer and make a pass with the meter on max temp lock. The temp number is easy to remember for pefect jetting...How long is the 1/4 mile ...1320 feet. Well that is the same temp number for a gas engine with perfect jetting. Once your jetted to get that number then it's one jet richer on a cold day and one jet lower on a hot day. Or, make the first pass of the day with the pyrometer attached, jet accordingly and the second pass you dialed in... not the 10th pass.. and it's easy piezy..

Jeff
______________________________________
J Jackson
JN Motorsports
www.OldGuysGoingFast.com
TAD, S/C, S/G and S/S

Last edited by JN-Motorsports : 05-03-2008 at 10:26 AM.
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