TiViD

Probably a stupid question, but what is the typical fuel pressure while running a holley or weber?

Roundabout

iTrader: (8)

6psi is what I have been reading

TiViD

ok thanks, thats all i needed to know

mr_ouija

+1

My car has been giving me a lot of crap lately trying to start it. Low and behold, my fuel pressure is topping out at 3psi. Good thing I have this carter pump to install yet.

rxtory

i know that on piston engines you want 10 psi for 1000 rpm and 20 for 2000 and so on, is this the same thing for rotaries, i have not paid attention to my gauge when using but i would like to know this answer

blwfly

iTrader: (4)

im pretty sure its just 1 base pressure unless you are turbo thats when it needs to rise
i only have knowledge about my nikki which is 2.5 max i think

85rotarypower

Ok, 7 psi is what is required by most aftermarket carbs besides some like the dellorto and mikuni. The stock Nikki is VERY low at only 2.5 to 3, depending on year. Any holley, carter/edelbrock or weber carb will work nicely with 7 psi.

Oh ya, I should mention that most aftermarket carb fuel pumps run a max of 15psi, and pretty much anymore than that and your going to blow apart the seals in the carb.

81gsl12a

iTrader: (1)

fule psi son...not oil psi ez mistake.. i thought the same thing when i opend the thread


cheers PaTricK

rxtory

hahaha if you didnt point that out i would have never realized lol, sometimes i just dont take my time lookin at stuff

trochoid

iTrader: (6)

You gents need to read up on your carbs. I see 1 correct answer and 2 partial, and post count doesn't count.

mr_ouija

I just checked the Holley instructions, to get a more specific answer.
They state their carburetors work best between 5 and 7 psi. Holley recommends running 7 psi @ idle and minimum 4 psi at redline.

TiViD

ok thanks everyone