Dribblers?

What are "Dribblers"?

Is it another name for nozzle bodies with a check built into them?

Are people using them on roots blower setups, if so, for what reason?

 

this might help

http://www.insidetopalcohol.com/showthread.php?t=4908&highlight=dribblers

 

I don't know if dribblers will work on a roots blowered car. Lots of guys with the screw blowers use dribblers. They have 16 nozzles in the intake manifold. A set of 8 called dribblers and another set right next to them called mains. Usually the dribblers are a little smaller than the mains. The dribblers usually have a lower pressure check valve feediing them than the mains. That way they are open at idle and the mains come in at a little higher fuel pressure. They are both open at WOT but at staging you are seeing more fuel from the dribblers. By having two sets of nozzles in each cylinder you can fine tune the motor at staging to try to equalize the EGTs at staging and at the top end also. With a single nozzle in each cylinder it isn't possible to equalize staging temps but you can equalize them at the top end. There are advantages and disadvantages to using dribblers and mains in your fuel delivery system. But if you are confused or unclear on what you are doing I can't stress the importance of sending your fuel system to a professional to set it up for you. There are a bunch of guys out there to help you. In a blown alcohol operation it is very possible to blow thiings up if you don't have the fuel system set up right. It's way cheaper to send it to somebody else than to fix it after you wish you had. Dave Germain