View Single Post
  #25 (permalink)  
Old 08-12-2014, 01:19 PM
Wbulk's Avatar
Wbulk Wbulk is offline
CC Member
Visit my Photo Gallery

 
Join Date: May 2009
Location: American Fork, Ut
Cobra Make, Engine: 66 Cobra
Posts: 930
Not Ranked     
Default

With your Quick fuel they usually send a small card with the stock jets and air bleeds listed. On a QF out of the box the restrictor jets in the main metering block may not be stamped with any numbers. You may have to call quick fuel or use a wire gauge to determine the size.
I have a quick fuel and love it. It is totally adjustable. I must say if you don't know carbs some of the information hear can be misleading. I am at 5,000 ft. above sea level and adjusted mine with my wide band O2 sensor, which are totally different than a narrow band that can mislead you. HOOK YOURS UP.

I am a old guy that was in high school and auto shop in the sixties and have worked on carbs for years. I used to jet carbs by reading plugs to but no more, I am converted. With fuels today it is very difficult to read plugs accurately. Also, with the wideband you can actually watch the gauge and determine the circuit you are in and tune that circuit one at a time. Of the 18 jets, air bleeds, and restrictors in that carb, I changed all of them. None were applicable at this altitude. I have to say with the wide band and a vacuum gauge, this is the best carb I have ever set up. It runs perfect in all circuits. It also took a few hundred bucks worth of gas to get to this point. I remember a thread Tom Kirkham did some time ago about tuning the power valve volume restrictors. With all the questions guys were asking he said several times you need a wide band to set it accurately.

Just a few examples, how do you know if you are in idle transfer or main metering around 2k rpms. You may think you are in main metering but may still be in the transfer circuit at that rpms. Or, you find at part throttle you have a slight bog that you think is a squirter issue, but it is actually going lean just before the power valve comes in and you actually need a higher number power valve. With a wide band and vacuum gauge hooked up you can actually see what's happening. I had my wide band hooked up, hung around my dash mirror with a mircofiber towel protecting the paint for weeks. I had a clear vacuum tube coming out the scoop and taped to the hood going to a vacuum gauge when I was working on power valve circuit. It is the best fit for new technology helping out the old. Take advantage of it.
__________________
Wayne

"Everything is alive. If you get angry at a vehicle or the trans, it won't fix until you apologize and say you are sorry." "The vehicle always knows what it is doing and what the cause of it's bad feeling is. If you ask it humbly what the problem is, it will tell you. Then you and it will both be happy."

Gil Younger
Reply With Quote