C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

N20 jet ?

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Old Sep 29, 2011 | 12:48 PM
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Default N20 jet ?

Does anyone know how may pounds of fuel a specific size fuel jet flows at a set fuel pressure?

I presume they are standardized mfg to mfg. anyone know what a #28 flows or a formula to use?

I have a jetting chart but I need flow numbers vs FP.

I found my TPI pump flows 24 gallons at 50 psi.
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Old Sep 30, 2011 | 04:04 PM
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ttt
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Old Sep 30, 2011 | 04:13 PM
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This will help. FIC does more than put injectors in a box...

http://www.corvetteinjectors.com/calculator.html

Stock fuel pressure is about 41 PSI (if I'm not mistaken. Please correct me if I am wrong.)

Stock Fuel injectors are 22 pounds.
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Old Sep 30, 2011 | 04:31 PM
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I am aware the TPI pressure used is 43 but the pump is rated to flow as stated above.

I called Holley but was on hold too long. I use a TPI pump but at 26 lbs FP for TBI for WOT. That is 106 lbs per hour of fuel. 106 divided by 6.67 lbs(weight of gas) = 15.89 gallons of fuel.

So the use of N20 requires more fuel. I am running high DC% now with N20 on and need to up FP. I dont want to go over 30 lbs FP.

Just wondering if I can use my existing TPI FP.
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Old Sep 30, 2011 | 04:49 PM
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Your best source would probably be FIC. Go to http://www.corvetteinjectors.com/. I called them earlier today and I hung up about 10 mins later with all my questions answered and ready to buy a full set.

Also, you might want to go ahead and post this in the nitrous/forced induction section. I'm sure the guys in there will tell you if they had to replace the pump.

I've seen 150 shots go through an L98 with 24 LB and stock pump no problem. That's it for my experience.
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