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Author Topic:   jet question
AC156
Dirt Freak

Total posts: 295
posted June 22, 2002 11:17 AM
how does outside temperature effect jetting? when the temp is higher would a car tend to run richer or leaner?

BK19
Dirt Freak

Total posts: 285
posted June 23, 2002 02:40 PM UIN: 40696038
hot air is thinner so you jet down
cold air is denser so you jet up
rule of thunb for holley jets is if temp drops 10 degrees go up 1 size if temp rises 10 degrees go down 1 size

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