carb tuning for dummies?

[lutzy]

Is there any place I can read up on carb tuning info? I have a quickfuel 850 and was wondering where I can find a nickle course on working on it..

[lutzy]

like pulling teeth to get a helpful answer on this forum..WTH??

[hifi875]

holley has several youtube post on the basic stuff. idle screw adjustment etc. try that

[Thephranc]

The Holley vids and book are helpful but tuning is a very complex operation that involves changing out parts and then going back a step or two to fine tune. A wide band O2 set up will help a lot with off idle tuning. Set up a cam to record the wide band as you do a few runs and see where its rich or lean then adjust. The first step should be a fuel pressure regulator so you get the same force on every run. If you try to tune with out a steady base pressure number you can end up chasing problems you only have when your pump is pushing out 5 pounds more than the last run. When tuning accel pump cams a line graph diagram of fuel flow from each colour and its screw hole settings is a must to get the most out of them. With out it you will be adjusting squirter nozzles when what you really need is the flow to be higher in one end of the cam curve.


Basically there is no "for dummies" book on carb tuning. Proper tuning takes time with trial and error if you come in with out some previous experience tuning. You can always get it close if that what you want but to get the most out of a carb you really need to fiddle. I have 3 tunes set up summer, winter and autum/spring. This is for two reasons. One is ambient temperature/humidity and the other is different seasonal blends of gas. And always try to fill up with the same gas for consistency.

[lutzy]

this is what i was basically looking for:
http://www.mustangandfords.com/techarticles/engine/mdmp_1109_carburetor_essential_tuning_and_setup_ti ps_four_barrel_fundamentals/viewall.html