DrEntropy said:
2p:
The description is "a few drops after running"... could it be due to combination of slightly higher float setting and heat expansion of the bowl contents after things are up to operating temps?
Although a LOT of folks use those "dial-a-pressure" regulators, IMO they're unreliable and downright diabolical. A good regulator is made by Holley, albeit a bit pricey. The SU's should be okay with up to around 4PSI. Lower is better.
If you don't have Viton tipped needle and seat, get 'em.
Why is the float level set higher? Which metering needles are in 'em?
I do have the Viton tipped needle/seat.
When I said the float was adjusted higher, I was thinking of it upside down. I guess it may have been more accurate to say "lower". The float is adjusted about 1/16 over spec, measured from the lip of the float bowl to the bottom of the float.
Since the pictures were taken I installed an ARE heat shield. It did not make a difference.
I should also note that for this test, I have been driving the car much harder than usual shifting between 4500 and 5500 rpm (traffic permitting)...........since I'm running a mechanical pump I assume it's putting out more pressure at these RPM's.
Yesterday I fitting dial regulator, the car would not run when dialed at 2-3 pounds. At 5 pounds it ran well and I did not see anything coming form the vent/overflow.
I have to do a few more test drives to be sure.
I have to assume the dial regulator is not so accurate.................