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Old 04-24-2013, 08:14 AM
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Fuel line fitting

Can anyone tell me what size and type of fitting is on the side of the fuel bowl for the output? (-4an, npt?)


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Old 04-24-2013, 08:33 AM
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threaded part of the bowl, not the adaptor piece, is 1/8npt. What you try'n to accomplish?
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Old 04-25-2013, 08:20 AM
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I'm building a regulated return. I bought a fuelab reg now I just need to build the hoses. If its just 1/8 npt into the bowl that should be easy. I was more curious about what it is where the line hooks up. If its -4 that would be great. Then I won't have to buy 2 more fittings. I'm running all -4 line and fittings. -6 is just a waste because the ports into the head are only going to be 1/4.


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Old 04-25-2013, 09:11 AM
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use the oem fuel inlet adaptor at the bowl, to connect to the fuel inlet line. Then use a 1/4nptF to -4 (m). Feed that then to the regulator. From regulator, if using factory hardline, connect the 2 adaptors off the fuel bowl ,to the hardlines, and get 1/8nptF to -4 (m).

If i was building a r.r. system. i'd use the oem adaptor for the fuel inlet, then 1/4nptF x -4 (m) "T" to feed the p/s and d/s front ports, using 1/8nptM x -4(m) fittings at heads. Use then same fittings at p/s and d/s rear ports, to feed regulator. All using swivel/37* barb fittings. Then "return" line off regulator to factory "return" line with hose clamp, since theres no pressure there to pop line off.
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Old 04-25-2013, 04:31 PM
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Why would you go from the fuel inlet to the regulator? It's not a regulated return if you put the regulator before
The fuel goes to the head. I don't need to know how to build it. And why would you put an adapter on the adapter
Out of the fuel bowl? Why not just get a 1/8npt(m) to -4an(m) and have -4an(f) on the end of your hoses. And if you feed the heads from the front, your defeating the purpose of trying to get air out of the heads. The motor has a natural slope and if you feed the heads from the front if air does get in there it won't go back to the tank. It will stay in the front of the head. If you feed it from the back the air will run to the front of the head and out to the regulator. If you put the regulator after the head it holds pressure in the heads rather than limiting it by putting the regulator before the heads. I'm leaving my stock fuel bowl in place as I already have a prepump kit. I know how to build the system I want I just asked what size the fittings where


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Last edited by superjoey03; 04-25-2013 at 04:36 PM.
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Old 04-25-2013, 05:39 PM
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Quote:
Originally Posted by timmyboy76 View Post
If i was building a r.r. system. i'd use the oem adaptor for the fuel inlet, then 1/4nptF x -4 (m) "T" to feed the p/s and d/s front ports, using 1/8nptM x -4(m) fittings at heads. Use then same fittings at p/s and d/s rear ports, to feed regulator. All using swivel/37* barb fittings. Then "return" line off regulator to factory "return" line with hose clamp, since theres no pressure there to pop line off.
reread....never said to install regulator before fuel feeding heads. Most if not all, that builds regulated returns, delete the fuel bowl, too...my bad. Good luck.
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