Login    Forum    Search    FAQ

Board index » Racing Forum » Fuel Systems

Post new topic Reply to topic  [ 2 posts ] 
Author Message
 Post Posted: Mon May 21, 2012 8:57 pm 

Joined: Tue Apr 01, 2008 10:56 pm
Posts: 110
Location: Kilgore Tx [North East Tx]

With my APD belt drive fuel pump and bypass regulator the idle fuel pressure "bounces" between 1 - 3 pounds at about 1200 RPM. Increasing RPM to about 1800 - 2000 results in steady, as set pressure. Will a smaller idle jet in the regulator steady the low RPM pressure?

Larry Woodfin, builder of Kinetic Art.

 Post Posted: Mon May 21, 2012 10:01 pm 
Site Admin
User avatar

Joined: Tue Apr 18, 2006 6:38 am
Posts: 11806
Location: Coming At Ya!
I don't run a bypass regulator but I do run a belt drive setup and my fuel pressure will fluctuate at idle also in the 2psig range +/-. You have to understand that fuel delivery/pressure in a belt drive system is RPM dependent and RPM at idle is NOT constant. As long as the down track fuel pressure is OK I wouldn't concern myself with what it's doing at idle as long as there's enough delivery to keep the fuel bowls full.

Big Boyz Toyz!


Necessity is the plea for every infringement of human freedom. It is the argument of tyrants; it is the creed of slaves.

William Pitt, British Prime-Minister (1759-1806)

Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

Board index » Racing Forum » Fuel Systems

Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to: