They will push alot of pressure if they dead head and absolutly require the bypass. Dont know about blowing the filter apart, but I would get a return reg if you are running any pump made for an EFI application. FWIW, a 4309 Mallory FPR is less than $100 and will fit up to 1/2" lines. I run them on both my turbo gassers with zero issues. I also run walbro pumps(sold under summit and holley names) with no issues.

 

Getting the Fuel Lines on the fittings was the hardest part of the install, I used a hairdyer to warm up the lines, lubed the fittings and they slide on first shot. Easy afternoon project. Good Luck

 

The walbro can make over 120psi. HOw many square inches is the filter canister lid? 5? 6? If it's 6, that's 720lbs of force-- I don't know for a fact that that's enough to blow the lid off the canister, but but that's a lot of force on a plastic lid!

JMO

 

Additional question on RAPTOR: Will I need to change/add any pre- or post filtration filters? d

 

The other thing that can happen with too much fuel pressure is blowing out the front seal on the injection pump. And guess where the fuel goes? Yup - right into the oil pan! Had a customer with a Glacier kit that put only the pump on! Needless to say, I put the rest of the kit on for him! A Raptor is a good option.

 

I installed Raptor (RP150) today! I'm certainly not too mechanically inclined, so it took most of the afternoon and into the night. Wasn't that difficult, just time-consuming for me. I spent the first couple hrs figuring whether or not to drop the tank. I could "sit" under the bed and see the fitting on top of the tank, but couldn't quite get to the fitting. So I spent an hour lowering the tank and making sure it was supported safely. I didn't disconnect the fuel feed tubes, so I didn't lower it all the way. I was able to get to the top of the tank and removed the proper side (i hope) with the blue clip. Then spent some time threading the 1/2 hose along the rail and assembling the quick-connect connection. THANKS FOR THE HAIR DRYER SUGGESTION---THOSE CONNECTIONS ARE TOUGH!
Spent another couple hrs running the 1/2 hose to the fuel filter. I wasn't sure about where to connect the electrical connections, but figured it out eventually by reading the instructions V E R Y S L O W L Y...and connected it to the wire that was going to the old fuel pump. As for the power lines (+ and -), I wanted to connect to the alternator, but couldn't determine where the "chasis ground" connection was; so I connected it to the battery (will probably re-connect when I get some education).
Also, I just left the "old" lines where they are, including the old fuel pump...it wasn't broke yet, but I think it was probably dying slowly...could still serve as an "emergency back-up."
Since I didn't finish until about 10:30pm , I'll wait to start it until tomorrow morning.
QUESTION: How do I "bleed" the air/fuel out of the lines?
QUESTION: Book says the Raptor is factory set at 18PSI. Is that too high for the 2nd gen trucks? --dan

 

QUESTION: "Cutoff valves" Why and what are they? -D