fadingfastsd Posted September 4, 2008 Report Posted September 4, 2008 Hey guys, I'm going to be running 2 Carter/Weber carbs on my Offy intake on my 51 Plymouth. Will be running on the original 218 flathead six. What I need to know ASAP, is where the hell do you guys get your fuel line, fittings, and a junction block to split off the line from the fuel pump to 2 carbs. I went to my local NAPA, and the guys told me that people haven't run multiple carbs since the 70's and it couldn't be done. I laughed and walked out. (If it isn't in the computer, they can't help you) If you guys could help me out...what is the thread size of the fittings as well? I need this setup: fitting at (stock) fuel pump -> hard line -> fitting at junction block ->junction block -> 2 fittings -> 2 hard lines to carbs -> 2 fittings at carbs Anybody know the thread size of the fuel pump, and of the Carter/Webers? I also saw a pic on here awhile ago of somebody running dual carbs that had a fuel junction block with a small pressure gauge on it that was really cool. Any idea where to get that? Thanks for the help! Quote
Normspeed Posted September 4, 2008 Report Posted September 4, 2008 I pm'd you some info. You can get fuel blocks and fuel pressure gauges at most aftermarket places like Mooneyes, Summit, etc. If you get a "three holer" you can put a fuel gauge in one hole. Or you can go all shade tree plumber and get a flare tee fitting at Ace hardware like I did. That stuff is not recommended for gasoline fuel systems, it's found in plumbing. If you call Summit or Mooneyes, whatever you do, don't spill the beans about no one using multiple carbs anymore. They don't know yet. Quote
fadingfastsd Posted September 4, 2008 Author Report Posted September 4, 2008 Thanks very much Norm, that answered my question exactly! Quote
fadingfastsd Posted September 4, 2008 Author Report Posted September 4, 2008 Ok found it and ordered from Jegs: I'll run rubber fuel line for now to get the car up and running, and switch to hard line at some point. Thanks for all the help Norm! Quote
martybose Posted September 4, 2008 Report Posted September 4, 2008 Watch out about what rubber line you run for a gas line, it may not like today's gas! I initially plumbed mine with the old-fashioned clear red fuel lines, because I liked the look. I then spent a week or two trying to stop them from leaking continuously as they swelled up, then I threw them away and switched to AN fuel lines and fittings. No problems since then. Marty Quote
greg g Posted September 4, 2008 Report Posted September 4, 2008 I have been running the flex fuel line tubing I got at ACE hardware for 4 yeas with no problems. It has been on and off several times. I recently trimed the ends that the clamps had frogged up, just trimmed back to fresh tubing. Quote
blueskies Posted September 4, 2008 Report Posted September 4, 2008 I bought all the hard line parts for my setup at my local NAPA... The hard lines are pre-flared 3/8" steel lines, used for brakes or whatever... I just cut one end off to the length that I needed, and put a new flare on with a borrowed flare tool. Don't forget to put the fitting on before you make the flare! This way I only had to make half as many flares. You can buy the line in a roll, and make all the flares if you want to, but the flares can be a bugger to get right. I made several of them several times... The "t" coupler and pipe-thread-to-flare fittings were there at NAPA too... I bet if you went back to your store, and asked for a pipe thread to flare fitting to fit the fuel block you bought, they would know what you wanted. Getting them to understand is the hurdle. I also bought an inexpensive tubing bender from NAPA too, these lines are thick enough that they are hard to bend by hand. Pete Quote
Grandadeo Posted September 4, 2008 Report Posted September 4, 2008 Boy you guys must have been reading my mind. Putting my offy manifold on and doing all the plumbing is at the top of list when I re-retire in a few weeks (right after a few HONEY DOs of course) Just happen to have a MQQN 3 holer fuel block on the shelf. And I went to the Normspeed school of B&B carb rebuilding, which is better than staying at a Holiday Inn Express. Can't wait. Lee Quote
Normspeed Posted September 5, 2008 Report Posted September 5, 2008 Pete, your lines look great. I was thinking the brake lines were 5/16 but I'm going by memory and with me that's like flying blindfolded. Quote
blueskies Posted September 5, 2008 Report Posted September 5, 2008 Pete, your lines look great. I was thinking the brake lines were 5/16 but I'm going by memory and with me that's like flying blindfolded. Geeze... maybe they are 5/16... I'll have to measure them now... Since those pictures were taken, I've replaced the hard line from the fuel pump with a rubber line. I had to change the fuel pump a couple of times, and the new pumps were different than the first one so the hard line wouldn't fit. Wasn't worth making a new one once all the rest of the engine compartment was in place. Pete Quote
fadingfastsd Posted September 5, 2008 Author Report Posted September 5, 2008 Pete I really like the look of the hardline you ran. I think I will do that eventually, but for now I think rubber line will much easier and quicker. Right now I need to get the car back up and running and out of my garage...I just don't have the room to keep it out of service for too long. Quote
Don Coatney Posted September 5, 2008 Report Posted September 5, 2008 Pictured is how I ran my fuel lines. Quote
dezeldoc Posted September 5, 2008 Report Posted September 5, 2008 That looks to be 5/16 line on there. Nice job Don! Who has the best price on fuel pumps? I am pulling the intake and exhaust on the 50 today and going to split them both, got the Smithy's yesterday, and I hope the have it on the road by the end of the month, I want to take it to the cruse in Laughlin at the end of the month. Quote
greg g Posted September 6, 2008 Report Posted September 6, 2008 Napa has them as does carquest and even Auto Zone. One thing to look at, several members have replaced fuel pumps lately only to find that after a short period of time the pivot pins for the camshaft lever has backed out of the body, in several cases leaving the car and driver dead at the side of the road. Check the straking of these pins before installing the new pump. Quote
blueskies Posted September 6, 2008 Report Posted September 6, 2008 Check the staking of these pins before installing the new pump. Glad you brought that up Greg, I'm one of the lucky ones that got stranded... The pump can't be reached from the topside on my car, so no way to change it out from the bottom on the side of the road... had to cancel my drive to the Salt Flats that year, and wait 3 hours for the roll back. Pete Quote
dezeldoc Posted September 6, 2008 Report Posted September 6, 2008 Thanks for the heads up on the pin! I checked with autozone and not available, I will check napa and see. Thanks Mike Quote
Don Coatney Posted September 6, 2008 Report Posted September 6, 2008 I got my fuel pump at Carquest. Quote
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