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Jet size increase

General engine tech -- Drag Racing to Circle Track

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408 Nova
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Jet size increase

Post by 408 Nova »

How much do I jet up on an 8082-3 Dominator when taking a power valve out?

Then, on top of that, going from Turbo Blue (non-oxygenated) to VP -113 (oxygenated)?
1980RS
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Re: Jet size increase

Post by 1980RS »

I usually go up 6-8 jet sizes. Better to go up too high than less and too lean.
mag2555
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Re: Jet size increase

Post by mag2555 »

Jet remember that if you do not use the high tolerance Holley jets that going up to what you would think would be a 1 step fatter jet may not actually be richer then what you where running!

Sometimes you need to go up 2 jet sizes to really go up only 1 jet size!
408 Nova
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Re: Jet size increase

Post by 408 Nova »

mag2555 wrote: Sat Sep 12, 2020 6:09 am Jet remember that if you do not use the high tolerance Holley jets that going up to what you would think would be a 1 step fatter jet may not actually be richer then what you where running!

Sometimes you need to go up 2 jet sizes to really go up only 1 jet size!
I've got a jet kit from Holley. Those jets should be okay, right?
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jmarkaudio
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Re: Jet size increase

Post by jmarkaudio »

Start with 93 square, non oxygenated fuels.
Mark Whitener
www.racingfuelsystems.com
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Good work isn't cheap and cheap work can't be good.
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