I am intersted in the idea of lowering fuel pressure and putting in bigger needle/seat assemblies. Question is, how big should I go? I have a 600 DP and am at 6 psi now with .110 needles. I want to drop it to 4 psi.
Thanks!
Please explain to me why you want to lower the pressure with those size needles and seats?
I use to turn the pressure up until it would force the needles and seats open with the motor running and then back it down around a 1/2 Lb. on all my old race cars on gasoline
That was around 9.5 to 11.0 lbs. depending on the carb, fuel pressure gauge and regulator
On my current E85 Dominator carb. with .130 stainless needles and seats I didn't see any performance loss or gain going from 7.0 lbs. down to 5.5 lbs.
Volume and pressure are two different measurements but I'm a firm believer in pushing the fuel into the carb. with enough volume and pressure to keep the jets submerge in enough fuel to not run the motor lean in the 1/4 mile
