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

Need NOS jet size help

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Old Nov 15, 2006 | 06:29 PM
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_twisted_'s Avatar
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Default Need NOS jet size help

for TPI plate spray bar -

They have jets with the "kit" that are for a much lower fuel pressure then I run - theirs 34-38psi and I am 45-47psi

I want to have an assortment from 75 up to 150 shots.

Can you point me in the right direction?
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Old Nov 16, 2006 | 07:44 AM
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Google is your friend, lol.

http://www.ny-trex.com/calculator.php

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Old Nov 17, 2006 | 10:25 AM
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I installed jets up to 250 hp+ on stock engine.Now problems.Smokes Yamaha R6...
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Old Nov 27, 2006 | 10:31 PM
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Originally Posted by jd_v3tt3
for TPI plate spray bar -

They have jets with the "kit" that are for a much lower fuel pressure then I run - theirs 34-38psi and I am 45-47psi

I want to have an assortment from 75 up to 150 shots.

Can you point me in the right direction?
Jets for the TPI are as follows:
NOS-05151 - GM TPI Plate System
100 HP .055N/.042F 93+ pump gas recommended.
150 HP .070N/.053F 93+ pump gas recommended.

Hope this helps you.

NitrousSam
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Old Nov 29, 2006 | 11:03 PM
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Originally Posted by NitrousSam
Jets for the TPI are as follows:
NOS-05151 - GM TPI Plate System
100 HP .055N/.042F 93+ pump gas recommended.
150 HP .070N/.053F 93+ pump gas recommended.

Hope this helps you.

NitrousSam
Thanks Sam - they are the sizes included - but I did something I usually dont do - I read the instructions, they assume the FP drop to be at 34-38 psi WOT so the fuel is way rich for my 47 psi WOT - I used a 33 instead of the 42 for 100 shot and its still rich - I spoke to Holley Tech and they gave me some sizes according to my app - they still went safe and are rich - which is good.

To be safe I ran 93 pump and 2 gal of 103 and had no issues
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Old Nov 29, 2006 | 11:06 PM
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Originally Posted by neat
Google is your friend, lol.

http://www.ny-trex.com/calculator.php

Thanks for the link - I actually followed a different link and found a spreadsheet.

The only thing with the plate vs fogger is the jet sizing - NOS numbers dont jive with the foggers calculators - but I have found a way to convert - I am not confident in sharing the info until I get more data from actual results.
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