Re: Setting float level on a 2bbl holley
in 8.jpg your list number is on the airhorn of the carb. It is 80316-2. I do not know that the ebay carb with 75028 is, do not buy that one just yet!<br /><br />Holley catalog says the renew kit you should use is 703-41. When I get time, I will try and look up what size jets and power valve you should be using. I don't have access to that info at the present time.<br /><br />Try and verify your mechanic used a real Holley renew or rebuild kit, and the box had HOLLEY on it. The number you list from dougrussel I wasn't able to look up. If dougrussel supplied you with a non-Holley kit let me know.<br /><br />About the float, in pic7 and pic2, there's a brass screw going into a hex nut on the top outside of the fuel bowl. This is were you adjust the float assembly! In pic7 inside the bowl there are 2 screws holding the float assembly to the bowl. Remove those screws, behind the assembly I think you'll find the needle and seat. Verify they are clean and moving properly. Take just the float and fully submerge it in a can or something of gasoline for a minute. If any air bubbles come out of it, it is leaking! Shake the float and listen if any gas leaked into it, if you hear fluid in it then it's leaking. It must be replaced. With float assembly installed, you loosen the brass screw with a flatblade screwdriver. This will then allow you to turn the hex nut with a wrench. Turning the hex nut clockwise lowers the float assembly, counterclockwise raises it. Because you don't have a peephole, the renew kit should have the instructions how to set the float. It will have a paper measuring stick. You measure the distance between the float and the inside of the TOP of the fuel bowl while HOLDING THE BOWL UPSIDE DOWN. The renew kit instructions will have this measurement. IF you can't get it I will try looing it up for you when I can, give me a day or 2. With this measurement, you set the float somewhat close to that then reinstall the bowl to the carb. This will allow you to start the engine and idle it fairly well. Since your carb has an externally adjustable float, you can always adjust the float afterwards, with the engine running, to find the best idle quality. Turning the hex nut 1/6 of a turn, or one side of the hex, adjusts the float 1/32". You shouldn't need to turn it more than 1 full turn either way, once you've set the float by measuring it.<br /><br />In 3.jpg, the screw on the metering block, between the 2 blue stripes of gasket, is your idle adjustment screw. There is one on each side. Set these by screwing them all the way in, clockwise. Do not tighten them hard! Only lightly! Then back each one out 1.5 turns, that's 360 degrees plus another 180 degrees of rotation. This will allow the engine to start and idle well enough. With the engine warmed up, you can turn these to get the best idle quality, at 600-800 rpms. You should need to turn them no more than 1/2 turn either way, and you can also adjust your float level in combination to find the best idle.
