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Chryco Psycho
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« Reply #20 on: August 12, 2006, 11:43:46 AM » |
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I never run a filter on the suction side of the pump , a slightly dirty fiter can restrict flow , pressure side is far better
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8WHEELER
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« Reply #21 on: August 12, 2006, 02:19:36 PM » |
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I never run a filter on the suction side of the pump , a slightly dirty fiter can restrict flow , pressure side is far better
I agree, but if you are running the vapor separator, there is no more room for a regular filter, they a huge. Dan |
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68 R/T Charger PP1 Red clone bought in 1978 68 R/T Charger JJ1 Gold bought in 1982 68 R/T Charger QQ1 Blue bought in 2001  |
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myk
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« Reply #22 on: August 14, 2006, 03:44:44 AM » |
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The only reason I'm able to run a secondary filter between the pump and 'carb is because of my rubber fuel line. If I had the stock steel line I wouldn't have room either...
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My cars, my glory:   |
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myk
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« Reply #23 on: August 23, 2006, 08:12:27 AM » |
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Got a question for you guys: After replacing my fuel pump and hooking everything back up, I noticed that the rubber fuel line that I use between the pump and the separator is forced to shape itself into a sharply bent "L" in order to make the distance of the pump and the separator; this has got to be a problem, at least in high RPM's right? I ordered the steel fuel line that's supposed to go between the pump and the separator but when I received it one end of it had a screw-on type fitting. Well, my "stock" replacement fuel pump, not to mention all of the other "stock" replacement pumps I've seen, don't have a screw-on type fitting so how's that supposed to work? Looking at the shop manual also shows the pump that I have to be correctly shaped with press-on inlets and outlets, but in later diagrams with the pump mounted it suddenly has a screw-on fitting? I really don't want to go back to the sharply bent rubber-hose setup, as I strongly suspect that's causing fuel delivery problems...
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My cars, my glory: |
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hemigeno
Global Moderator
Old Timer
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Posts: 3,310
'69 HemiCharger R/T 4-speed
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« Reply #24 on: August 23, 2006, 08:23:22 AM » |
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I have two of the M4434 fuel pumps, which is the stock 440HP pumps. Both have one fitting for a rubber hose & clamp, and one screw-on type fitting for the steel fuel line stub. I can see where using a short length of rubber hose going to the separator might put quite a kink in it - guess that's why the factory went with that short section of steel line.
Maybe try using a longer length of rubber fuel line to take the kink out of it?? For the spot-on factory look, you would need to change out the pump though...
Geno
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myk
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« Reply #25 on: August 23, 2006, 01:54:14 PM » |
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Your pump has a screw-on fitting? Gah! Why do they keep selling/showing me something different? Anyway, looking at my ultra-cramped Camaro's engine compartment gave me an idea that is ugly but will keep the kinks out: I am going to try routing the vapor separator and line along under the motor, then inner-fender and then up and over to the 'carb.
I'm gonna' feel really stupid if I find that my high speed surging was caused by that kinked fuel line and not the pump, 'carb, ignition and everything else I've been messing with over the past week...
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My cars, my glory: |
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471_Magnum
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« Reply #26 on: January 05, 2008, 10:01:02 PM » |
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Here's a big ol' bump for you. Just stumbled across this thread.
The vapor outlet has an oriface in it.
Anyway, yes there is a much cheaper alternative. There is a WIX/Napa filter available that will work. Unfortunately, I'll have to do some digging to find the p/n.
It does not look like the factory one though. It does not have a mounting bracket. It is bare metal. Also, the vapor port is on the outlet (top) end, opposite the originals/repops.
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"I can fix it... my old man is a television repairman... he's got the ultimate set of tools... I can fix it."  |
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Nacho-RT74
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« Reply #27 on: January 05, 2008, 10:32:13 PM » |
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VERY interesting thread... din't know about this. THANKS! Now I see this, I think a buddy of mine got a problem with vapors and gas didn't arrived to carb so engine just died continuouslly!
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Bobs69
Junior Member
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Posts: 84
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« Reply #29 on: July 27, 2008, 08:27:08 AM » |
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Son of a Bitch! I don't think I even have that on my car, I'll have to check! Funny how many "mechanics" don't check these small things!
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grdprx
Junior Member
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Posts: 104
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« Reply #30 on: July 27, 2008, 05:29:15 PM » |
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You know, it's a funny thing. I was readying over the shop manual last night and read about the vapor separator. In the first paragraph, is says it's used on the 440 hp and 426 motors. Does this mean it's not required in a build, as my car isn't a HP? Just a 440...
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craigandlynda
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« Reply #31 on: July 28, 2008, 06:31:32 AM » |
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this fuel separator was the key to a problem i had when racing a sixpak superbee years ago.....everything went well during the quarter mile, til about 3/4's way down the 1320 the motor would starve for gas....turned out that i was using a regular two legged str8 thru filter....once i changed and put in the proper piece, the three legged separator, it solved the problem. consistant 12.0's.  |
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