I was wondering if anyone one would know what kind of fuel pressure to run with a Nikki RX3 carb on stock 12A....Any idea that would be great Thanks

 

Start at 3 and adjust from there. The fuel pressure on the 7's is set to 2.5ish I think. I have mine right at 3 and seems to work really good.

 

Ok thanks....But im having a really big problem trying to get my fuel pressure down past 4lbs...i tryed a few diffrent regulators and know matter what i do it wont go down...unless all of my regulators a bad...but how could i have three bad ones...My car is getting way to much fuel..I go to give it full throttle and it just bogs out...but if i eas into it..it will not happen...I dunno any ideas

 

I know there are 2 different types of the holley regulator. They have the 5-9 and the 1-4. Might be 1-5 and 5-9. Either way this could be what is holding you up. A for the holley regs, th eonly difference is the spring and maybe something else. You can buy just the parts needed to change it over, or just buy a whole new one. Check to make sure though.

 

Figured it out...of course all of my old regulator where the 4.5 to 9lbs...maked sence ..ha ha..ordered a new one...the right one....thanks for the help tho

 

No problem man.