REGAL Carb opinion and input request

[1badgbody]

Q-jet is probably the best if you can get them dialed in, I can't. I throw edelbrocks on everything because they are an absolute piece of cake to dial in and I don't lose any performance like the Holley guys will tell you. As a matter of fact on one of my 383's the engine builder insisted on a quickfuel 670 cfm carb. So after blowing $600.00 on the carb and fuel feed wound up yanking it off and throwing an edelbrock 1411, picked up 15hp on the dyno and is every bit as responsive if not more. Needless to say the Quickfuel is sitting in the box on the shelf after 10 minutes of dyno time.

 

[MrSony]

Q-jet is probably the best if you can get them dialed in, I can't. I throw edelbrocks on everything because they are an absolute piece of cake to dial in and I don't lose any performance like the Holley guys will tell you. As a matter of fact on one of my 383's the engine builder insisted on a quickfuel 670 cfm carb. So after blowing $600.00 on the carb and fuel feed wound up yanking it off and throwing an edelbrock 1411, picked up 15hp on the dyno and is every bit as responsive if not more. Needless to say the Quickfuel is sitting in the box on the shelf after 10 minutes of dyno time.

For most stock or mild engines, really the things you need to adjust are the idle mixture. If you get a carb that's actually for the engine, you really don't have to do anything. If you want to dig into it, it has metering rods and jets just like an edelbrock. An AFR gauge will make tuning it breeze. I haven't done it myself, but some people pop the plug out of the air horn on the qjets to externally adjust the APT screw.

 

[pontiacgp]

For most stock or mild engines, really the things you need to adjust are the idle mixture. If you get a carb that's actually for the engine, you really don't have to do anything. If you want to dig into it, it has metering rods and jets just like an edelbrock. An AFR gauge will make tuning it breeze. I haven't done it myself, but some people pop the plug out of the air horn on the qjets to externally adjust the APT screw.

I make a tool to adjust the APT, just used a 3/16 brake line and formed one end for the D and bent the other end so I can easily track the adjustment. For the plug I have a hole tapped in it so I can turn in screw a few threads to pull it out. You have to punch out the plug first and then don't apply pressure when you put the plug back in. It will sit flush and will still pull out with the screw. I would not try adjusting the APT without a wideband A/F gauge.

 

[Bonnewagon]

Good advice from Steve. Another tool that works is the double "D" socket that adjusts the idle mixture screws on later Q-jets. Or you can make one by using a spare secondary rod hanger. I just grind off about a half inch of the sides from the bottom end. It fits the APT perfectly.