O2 or ex. temp?
Posted: Sat Dec 01, 2007 5:36 pm
This winter I would like to add a data acquisition system to my drag car. Price is always a concern so if I am going to invest my money I want to get my moneys worth. Although engine tune up is second on my list of things to figure out, it is the first question I have. I have a Methanol injected engine. I went this route because I felt that I could not melt this thing even if I tried. And believe me I have tried LOL! This engine has a fabricated intake that I made myself. I have always wondered if it was balanced flow wise and I figure 8 EGT’s should give me some insight to this question. I could also have 8 O2 instead. So my question is:
If you had the choice of 8) O2 or 8) EGT, which would it be?
PS. I use and upper end lube in my fuel.
I have a Rons FI system with the typical barrel valve, pill, and electric high speed bypass. In theory knowing the fuel pressure should give me enough information to calculate volume in, out, and bypassed. I could put a flow meter on the output of the pump but that would still leave me not knowing the actual fuel flow to the engine unless I also measured the fuel going back to the tank from both the pill and the high speed bypass. (the bypass is usually not set to turn on unless I’m bored). The barrel valve is part of the distribution block so I can not measure the fuel going directly to the nozzles. I will probably just get the fuel pressure sender unless anyone has any different ideas.
When and if I ever get the car dialed in I would like to measure the pressure in the hood scoop as well as intake and possibly crank case. Most likely use the same sensor and place it in different places as my curiosity warrants. Any thoughts on the subject, let me know.
Thanks for any feedback.
If you had the choice of 8) O2 or 8) EGT, which would it be?
PS. I use and upper end lube in my fuel.
I have a Rons FI system with the typical barrel valve, pill, and electric high speed bypass. In theory knowing the fuel pressure should give me enough information to calculate volume in, out, and bypassed. I could put a flow meter on the output of the pump but that would still leave me not knowing the actual fuel flow to the engine unless I also measured the fuel going back to the tank from both the pill and the high speed bypass. (the bypass is usually not set to turn on unless I’m bored). The barrel valve is part of the distribution block so I can not measure the fuel going directly to the nozzles. I will probably just get the fuel pressure sender unless anyone has any different ideas.
When and if I ever get the car dialed in I would like to measure the pressure in the hood scoop as well as intake and possibly crank case. Most likely use the same sensor and place it in different places as my curiosity warrants. Any thoughts on the subject, let me know.
Thanks for any feedback.