Im 8 up 10 back to tank with reg after the carb. Mallory 140 with their regulator. Been running this setup on past 2 cars for 15 years. No other way I would do it
Makes no sense to me why the return line would need to be bigger than the feed line; there's already going to be a reduction in volume from filling the carb, so having it the same size should be sufficient... IMO.
EDIT: Not sure of the manufacturer, but here's another schematic that's similar to what I posted above.
This is exactly what is on the current car. Flawless. Car makes north of 900. Previous car had a Mallory 140 and a Mallory return style regulator at the carbs. 8 in 8 out. It was constantly over pressure at idle no matter what adjustment was made. Same carbs with both systems. Finally added a second bypass like pictured in the trunk at the tank. We even bored the return larger in the regulator, Lines are bulky, more weight, more $ in fittings. Wasn't worth it. Doug
Last edited by dvw; 01/31/2006:13 PM. Reason: need picture
