Crossover line

[MUDSTROKIN']

if anyone has a link to a thread for homemade c crossover lines in the back of the heads our any information about it it would be greatly appreciated.

 

[Pizza pig]

A waste of time in my opinion, doent solve the dead head issue

 

[windrunner408]

:whs: a cross over line is merely a line that connects the back of the heads and that is it. It doesnt do anything as far as making sure both heads are at the same fuel pressure (since they already are) and it the fuel will still dead head back there as if there wasnt one in the first place. Do it if you want to but it is a waste of time and money IMO.

 

[KPSquared]

Pointless. Just do a RR.

 

[SouthFlstrokin']

Few say a RR is a waste also though...

 

[windrunner408]

Not really sure how a RR is a waste as it does allow an alternate path for air in the fuel to go as opposed to only through the injectors as well as allowing for more fuel flow than the stock distribution banjo bolts. RRs are kind of expensive but not a waste IMO.

 

[Triple H]

Then what's the alternative to a RR system?

 

[wetnsloppy4x]

Not really sure how a RR is a waste as it does allow an alternate path for air in the fuel to go as opposed to only through the injectors as well as allowing for more fuel flow than the stock distribution banjo bolts. RRs are kind of expensive but not a waste IMO.

:whs:

Then what's the alternative to a RR system?

Nothing I'm aware of, aside from building your own RR or leaving it stock.

 

[windrunner408]

Then what's the alternative to a RR system?

Nothing I'm aware of, aside from building your own RR or leaving it stock.

Exactly. Either build your own or leave it stock if you like but a cross over does nothing.

 

[Pizza pig]

I've seen people run around misleading people and before anyone says this, an airdog 2 is not a alternate option for a regulated return, its merely a fuel pump with a water/filter/air separator.

It regulates the fuel sent to the fuel bowl and makes sure there is always fuel in the bowl. Even a weak spring with an airdog wont hold good fuel pressure down the track on a race tune with bigger injectors.

Regulating and returning fuel before the injectors is a piss poor design (this is the what the stock fuel system does.

Even when replacing the stock pump with an AD2, Its still the same ****ty design however the AD2 pumps fuel faster and less reliably (for most people)

The proper fuel system in my opinion to be run on a 6.0 is deleting the fuel bowl and having a high pressure fuel pump (Fuelab or Aeromotive) directly feeding the heads and a good water separator/fuel filter contraption before the pump and a regulating the fuel pressure after the heads (regulated return) . This eliminates having two regulators from fighting each other such as putting a RR kit and AD2 as the pump together.

A crossover line literally just runs the fuel a circle in the rails in the heads it does nothing and a waste of time and aggravation

 

[doubledee715]

Having the two reg's fighting each other is exactly why I want to avoid going with an air dog or fass. thanks for that post greg

 

[Mdub707]

I could see doing a x-over line in the back and putting a "T" in to read fuel pressure. I think that would be a more accurate place to read fuel pressure from.

 

[Pizza pig]

that is also try mike, but while youre back there.... :flipa: :thumbup:

 

[Mdub707]

that is also try mike, but while youre back there.... :flipa: :thumbup:

I'm just one of very few guys who don't follow the whole RR hype I guess. Not to say they're a bad idea, I'm sure they are great. I just don't see an issue with running an AD2, and reading pressure behind the heads. Then just adjust the AD2 to whatever you need based on the readings past the heads. Everyone says you "NEED" to regulate behind the heads, but what difference does it make where it's regulated as long as you're reading pressure back there? I'm already reading pressure behind my heads as it is. To each their own I guess.

 

[MUDSTROKIN']

What kind of readings are you getting behind the head as opposed to in front?

 

[Cutting-Edge Diesel]

As long as there is pressure it works. No matter how you get it there.

 

[Mdub707]

What kind of readings are you getting behind the head as opposed to in front?

Not good. Not good at all. Can drain it to 25psi on a mild street tune. This is with a brand new Ford fuel pump, old style fuel filters (no o-ring on the lower unit), blue spring upgrade, and higher flowing banjo bolts. I want to try it up at the bowl just for a comparison. I am reading probably 3' behind the heads too though... static fuel pressure does not equal dynamic fuel pressure, that's for sure.

I would upgrade to the AD2, but I have a buddy with the exact same setup and the AD2, feeding right into the front heads bypassing the fuel bowl and he's seeing the same thing.

 

[MUDSTROKIN']

So pretty much the injectors at the rear of the head are seeing very litle pressure no matter t the set up? How do you fix this?

 

[Pizza pig]

regulated return and a good healthy fuel pump

 

[MorganY]

I have the AD2 and reg return. burned my AD2 pump up in 2000 miles because the RR was set at 70 and the AD2 at 55...wish I went with the aeromotive, a good set of filters and water separator to accompany my RR. JMO