SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: bbfsouthwind on June 08, 2014, 03:57:51 PM

Title: Fuel pressure reading
Post by: bbfsouthwind on June 08, 2014, 03:57:51 PM
I am running a tunnel ram with 2 holleys and an aeromotive a2000 4 port regulator. Problem is that I have no fuel pressure ports. Can I just drill and tap one of the plugs that goes into my carb bowl?


Sent from my iPhone using SoCalJetBoats mobile app
Title: Re: Fuel pressure reading
Post by: crewchief22 on June 08, 2014, 04:36:59 PM
The bowl isn't pressurized.  It needs to be inline before the inlet to the carb.
Title: Re: Fuel pressure reading
Post by: bbfsouthwind on June 08, 2014, 05:14:57 PM
It's not in the bowl, an inlet fitting can be screwed into either side of the bowl.  It appears that fuel pressure would be present at the plug?


Sent from my iPhone using SoCalJetBoats mobile app
Title: Re: Fuel pressure reading
Post by: 86caribbean on June 08, 2014, 09:13:58 PM
Not sure if youre running -6 or -8 line, but you need to try and plumb up something where you can tee off in between the regulator and the bowl inlet with a -3 line to a fuel pressure guage and set pressure between 6 & 7 psi.
Title: Re: Fuel pressure reading
Post by: ka0tyk on June 08, 2014, 09:53:56 PM
inline fitting with pressure gauge NPT hole....

(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fwww.jegs.com%2Fimages%2Fphotos%2F500%2F555%2F555-110527.jpg&hash=e258245d9b3f0357dfc1418e8ff1f0fcd5e16ff0)
Title: Re: Fuel pressure reading
Post by: Blown R/T on June 08, 2014, 09:57:54 PM

inline fitting with pressure gauge NPT hole....

(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fwww.jegs.com%2Fimages%2Fphotos%2F500%2F555%2F555-110527.jpg&hash=e258245d9b3f0357dfc1418e8ff1f0fcd5e16ff0)
X2


Sent from my iPhone using SoCalJetBoats
Title: Re: Fuel pressure reading
Post by: berkbryan on June 09, 2014, 12:40:56 PM
This is how I did mine using the fitting shown above

Sent from my SM-G900T using SoCal Jet Boats mobile app

Title: Re: Fuel pressure reading
Post by: bbfsouthwind on June 09, 2014, 01:25:16 PM
I can't find one in -12an


Sent from my iPhone using SoCalJetBoats mobile app
Title: Re: Fuel pressure reading
Post by: ka0tyk on June 09, 2014, 02:00:15 PM
-12 to your carbs? Damn. You want the pressure gauge after the regulator so you are properly setting it right? by your pix it looks like you're pushing like a -6 or -8...
Title: Re: Fuel pressure reading
Post by: jyeager on June 09, 2014, 02:30:30 PM
-12 is huge! i only run -10 to the regulator the -8 to the carbs.
-8 to the nitrous

That's how I did mine.


Sent from my iPhone using SoCalJetBoats mobile app
Title: Re: Fuel pressure reading
Post by: bbfsouthwind on June 09, 2014, 08:02:32 PM
-12 to the regulator, -6 to each bowl. I don't want some goofy ass fitting screwed onto my carb or regulator or I would have went the cookie cutter route with the union. I was wanting to do something different and it appears that it will work to me, If I can feed fuel from either side of the bowl then there is no reason that pressure should not be present at the blocked off inlet on the bowl if the other side is hooked to the regulator. Not sure why I even bothered asking!


Sent from my iPhone using SoCalJetBoats mobile app
Title: Re: Fuel pressure reading
Post by: 81sprint on June 09, 2014, 08:16:38 PM
I run -8 the whole way with the regulator mounted to the mechanical pump set at 6 psi

sent from the garage...drinkin cold ass coors light

Title: Re: Fuel pressure reading
Post by: el mojado on June 10, 2014, 11:08:59 AM
I believe line pressure is what you want to read. Not pressure IN the bowl. Which is what you would be reading by putting a gauge where you want to. Your reading should be before it gets to the bowl but after the regulator. INLET PRESSURE. but what do I know. My .02 cents.

Sent from my SCH-I535 using SoCalJetBoats mobile app

SMFPacks CMS 1.0.3 © 2026