NJFBOA - Home of New Jersey's Camaros and Firebirds - View Single Post - Getting my new 406 SBC installed, running, and driving

IROCZman15 · 05-28-2023, 07:13 AM

I should be going today. Wasn’t able to get to sort out a few things are other teh firmware/software but did take care of some other stuff.

I’ve always been curious about my nitrous jetting. I made my own jet chart as I couldn’t find a jet chart for the fuel pressure I have at the system which is 65 psi. I also used that Robbie the robot calculator to guide me but that’s just internet math, real life use seems to be different. I really
Need to get the nitrous jet/tune setup on a dyno and I know that, so that will be a goal for 2023. According to your jet numbers and my “tame” jet chart, I think my
Numbers for a 150 shot put it closer to a 120
Shot and my numbers for a 175 shot are more like a 150
Shot . I have the .062 nitrous jet and .032 fuel jet in there now. Nitrous bottle pressure will be at 950 today and fuel
Pressure is 65 psi at the gauge where the fuel
System T’s off . Without useable datalogs, all
I have is visually seeing the afr numbers on the gauges as I go down the track. Might setup the GoPro to record the gauges? Gotta check spark plugs of course too. Will use a splash of the race gas concentrate in the can.

http://robietherobot.com/nitrousjetcalculator.htm

https://flic.kr/p/2oDprs4

05-28-2023, 07:13 AM	#560
IROCZman15 10 Second Club / Meet Coordinator Join Date: Dec 2004 Location: Roxbury, NJ Posts: 2,101 iTrader: (8)	I should be going today. Wasn’t able to get to sort out a few things are other teh firmware/software but did take care of some other stuff. I’ve always been curious about my nitrous jetting. I made my own jet chart as I couldn’t find a jet chart for the fuel pressure I have at the system which is 65 psi. I also used that Robbie the robot calculator to guide me but that’s just internet math, real life use seems to be different. I really Need to get the nitrous jet/tune setup on a dyno and I know that, so that will be a goal for 2023. According to your jet numbers and my “tame” jet chart, I think my Numbers for a 150 shot put it closer to a 120 Shot and my numbers for a 175 shot are more like a 150 Shot . I have the .062 nitrous jet and .032 fuel jet in there now. Nitrous bottle pressure will be at 950 today and fuel Pressure is 65 psi at the gauge where the fuel System T’s off . Without useable datalogs, all I have is visually seeing the afr numbers on the gauges as I go down the track. Might setup the GoPro to record the gauges? Gotta check spark plugs of course too. Will use a splash of the race gas concentrate in the can. http://robietherobot.com/nitrousjetcalculator.htm https://flic.kr/p/2oDprs4 __________________ 1987 IROC-Z - modified Last edited by IROCZman15; 05-28-2023 at 07:15 AM.