Here's a diagram comparison that I found. I'm NOT saying this is an authority of how to set up your fuel system, but it does address the spring in the filter bowl as well as a complete bypass of said filter bowl. Note that in the page bypassing the bowl, there is a sump on the tank, ie the picture that Mdub posted.

 

how do i take out the factory spring regulator

Is it hard to route the gas lines to the banjo bolts and addind a T

Thank you for the diagram

Jim

 

Most just run a line from the AD2 forward, to a "Y" then feed it directly to the front of the heads. The factory fuel return is in the bowl up on top of the motor where the fuel filter is. The AD2 is internally regulated though and there should be a return line from the pump to the tank. So you can bypass the upper filter housing and effectively eliminate the factory regulator setup. That's the cheapest/easiest and best way to do it.

 

okay what about the return from the bowl to the ad2
do i just block it off

thanks
jim

I have set the ad2 to 60 psi
should i bring down the psi to 50 untill i re route the fuel lines

 

Doesn't matter, the system is just going to be regulated by whatever is at the lowest point.

I guess I need to read up on how the AD2 is run... You have install diagram or something? The factory return line is still run to the pump? Then the pump has a return to the tank? What a mess.

You can just run straight to the heads and eliminate the fuel bowl up top, then it doesn't matter where the return from the bowl goes.

 

yes there is a return line going back to pump from engine
there is a feed line going to engine
there is another line going to return to tank ( there is a y tube ) shares
then a line going from tank to pump


I just want to remove the factory reg or spring for now
this winter i will probably go straight to banjo bolts

 

You can't just "remove it".... then there will be an empty hole and fuel will go right down the return line and you will never have pressure.

I've read you can use the 6.4 oil filter housing and eliminate the fuel filter up top, then just run right to the heads. I'd eliminate the banjo's too. Just run line right to the heads using 90* fittings.

 

i have to fix this problem

so i will remove the fuel bowl completely

Run a direct line from the aire dog to a T connection ,,,

Then run to each banjo bolts on each head


Then what do i do with the return line back to the air dog

Plug it???

Thanks

In the mean time when i install the new pump i was thinking of bringing the PSI to 50 instead of the 60 i was running

 

Hey Jim,

Did you get your setup worked out?

What did you ultimately use/do?

 

i have not done any thing

i know it will fail again

no real advise about the stupid return line

Where do i put it to

if i remove the fuel bowl???