Search results for query: fuel return line

1/4 inch line? Probably vapor return from the fuel filter, I don't think '72s had charcoal cannisters yet (maybe California?). Best bet is check the FSM for your model. Since you are going to EFI (which EFI, BTW? What engine/body? What does the EFI manufacturer recommend?), are you moving up to...

I made my own return/in-tank pump "module" using a fresh sending unit with a 1/4" return already in it. I removed the 1/4" line, enlarged the hole and silver soldered a 3/8th's steel return line in it. I then drilled and fitted a fuel tight bulkhead style electrical connection to the sending...

This. If it’s an EFI pump you can’t even regulate it down for carb fuel pressure. Buy one good fuel pump, like a Mallory or a Magnafuel, set it up with a return line and forget about it. Trying to go cheap on an electric fuel pump will just cost you much more in the long run.

NOT pulling. I have an electric pump mounted at the tank. A question on the return line idea: Eventually all the fuel will become the same temperature. The fuel in the tank will not always be cooler due to the constant recirculation. What makes the idea useful is that the engine is not run...

Ok thanks... I'm still getting ready to put that Mallory 250 in place of the holly blue fuel pumps. Unless there is a restriction somewhere that I don't know about by blocking off the return line from the regulator and putting a gauge on the inlet side of the regulator from the pump that should...

I've always wanted one of those chrome alt cases. Which one/brand is that? Ive run the same kragen auto listed for '70 340 dart with both a stock head 340 with .528 cam and a 410 sr and stock 5/16 fuel line and never ran put of fuel. In general.. I wonder if anyone has tried using the stock...

Been doing some research while I am waiting for the output shaft to get here (hasn't even shipped yet. Grrrrrr.) I am thinking the reason the carb bowl is weeping in that the fuel pressure is too high. The manual says between 3 and 5 psi so I will see if O'Reilly's has a fuel pressure gauge I...

I will shoot you a PM on the gauge cluster. I'd like to see what that entails. My fuel tank is about 25 gallons already so I should be good there. I do have a return line for the carb, it will be hooked up after the initial fuel filter gets replaced in another 200 miles.

mderoy340, your lines look so similar to my lines. I am attaching some pics of mine and I cant find any right at the headers but mine are pretty much the same as yours. I have insulated them with the heat wrap and also built a 1/8" shield between them and the header collector. Also where my fuel...

Actually if you are using an electric pump, I would NOT plan on "not running" it at times. Either run an electric through a mechanical and always run it powered or get rid of the mechanical pump Part of the problems with modern fuel is that it boils more easily. Boiling point is...

You'd probably have to invest in tooling, fixturing, and/or sub-part manufacturing of the 3/8" to reduce your labor $$ cost. $90 for a good part over a $60 semi-functioning part is palatable. You start going over 3x the lesser fuel senders, customers start looking at other options or just put...

Hey All, So, for some reason, unbeknownst to me, I ordered 3/8 fuel line from the tank to the pump. My car is a 73 340 Dart Sport. I really do not want to send it back as I bought new clips, hose kits, etc. for the 3/8 line, and I just do not want to go through the hassle packaging everything...

That won't be a issue as I purchased (2) pre-made 14' lines because I didn't want to deal the hassle of assembling and getting it wrong. Right now I have the fuel pressure gauge mounted on the regulator, but it's only a 15 psi gauge and I don't know the specs on the regulator other than it is...

Now THAT is the ticket. Everything in one module, and the price is not really outrageous.

Holley OE-Style Fuel Tank Module, 1963-1976 Dodge/Plymouth A Body How about going this route? Everything in one shot and no return line.

If your injectors were large enough and the duty cycle went to 100%, you'd know you were out of fuel just by watching that. Had a friend send me a log from a sniper where it fell on its face at the drag strip and the injectors were at 100%. As I suspected the fuel system was not a good design...

what if you took that non bypass regulator and made it one: T off the input before the regulator, straight the carb and then regulate the pressure back to the return line? wide open (screw all the way in ) would reduce the pressure to the carb as it will be in full bypass back to the tank but on...

A factory return system with a .060" metered orifice will return ALL of the fuel to the tank. It might take a while. lol

I have a custom megasquirt setup using a tunnel ram. Very good idea on using the 5/16 for a return thanks!

You can verify that your fuel pump is pumping enough volume by having the output line send fuel into a container, but you might need to rig something up to keep fuel going into the carb to have it run long enough. Warm the car up a bit and then disconnect the high pressure line and attach a...

New regulator is on and return line hooked up. It seems to be much better but, maybe not all the way fixed. I noticed I do have a fuel leak coming from the carb so, I will pick up a kit and hopefully it will be all good.

How did you do that without cooking the wire entry? I did mine rather "redneck" but I "effed up" I put in a 1/4" istead of larger. At the time this was for vapor return Punch don't drill a hole in the drained tank. Use a taperd awl and swedge/ enlarge the hole. This creates...

mopowers, thanks. I should have mentioned Ive already wrapped the entire fuel lines both supply and return with the DEI wrap. To be honest I didnt notice any change once i installed it. Once I drive my Dart for 20 minutes then shut it off and it sits about 10 minutes its almost impossible to...

Backfire on decel is exactly what I would expect with your square transfers and nearly closed mixture screws. And IMO your 15 degrees of Idle-timing is the root cause of it. Reset the mixture screws to 2.5 turns out, and open your transfers a half a turn. Then, if your idle speed is too high...

The PCM only turns on the fuel pump via the ASD relay after is has a cam and a crank signal from the sensors. It will turn on for about 2 seconds when the key is first turned on then turn right back off. This is just to keep prime in the fuel system. Fuel pressure is regulated by the pressure...

It is a holley. but I thought it was after market with a harness and box on the fenderwall. 4 injectors 2 up front and two in back. Have to get the date code tomorrow. Too cold and no light atm. Can you normally see it from underneath. Up top the header covers everything. Pic of the injection

What up FABO FAM, I want to give an update on my recent escapades. Per my previous post started a project to install FItech EFI and install Classic auto air under hood kit ne compressor brackets receiver and hoses to the factory evaporator and controls. This is a bit long but should be...

Okay, let's take this step by step. If you have enough gas in the oil to be pushing fluid out of the dipstick, it ain't because of a piston ring. You'll know soon enough anyway, since you're tearing the engine down, and can see for yourself. It's an LA motor, since A.) There are heat crossover...

Neither. Both come with unanticipated costs. If your budget is tight, save the dollars until you can afford both - then do one. Heads are likely to require new pushrods, or rockers, or both. When I did my TF heads, I planned to re-use my rockers. Didn't work out. So another $750 for rocker...