gas tank help

chopped · March 04, 2012, 10:03:05 AM

I want to use the polly tank from an 88 ramcharger with my carb engine. The plastic elbows that the feed and return hoses were attached to are broken. Can I close off everything then drill a hole threw the plastic and use some sort of elbow to run new feed and vent hoses? Seems like I could drop some fuel hose to the tank bottom for a pick-up. Thanks, Skip

chopped · March 04, 2012, 10:06:35 AM

A http://ramchargercentral.com/vehicle-help/88-ramcharger-fuel-sending-unit/tank like mine is in this thread.

wayne petty · March 04, 2012, 11:01:12 AM

the fittings got snapped off the top of the fuel pump assembly??

http://repairguide.autozone.com/znetrgs/repair_guide_content/en_us/images/0900c152/80/05/2a/a7/medium/0900c15280052aa7.gif

those are squeeze to release...

http://repairguide.autozone.com/znetrgs/repair_guide_content/en_us/images/0900c152/80/05/2a/a8/medium/0900c15280052aa8.gif

this is what does what on the top of the tank..

http://repairguide.autozone.com/znetrgs/repair_guide_content/en_us/images/0900c152/80/05/2a/a9/medium/0900c15280052aa9.gif

the whole section...
http://www.autozone.com:80/autozone/repairinfo/repairguide/repairGuideContent.jsp?pageId=0900c15280052aa6

of course you can always to bulk head fittings through the tank.. to attach your low pressure connections..

the original fuel pump looks like this.. in the hanger..

http://contentinfo.autozone.com/znetcs/product-info/en/US/ar1/E7018/image/4/

whats neat.. i think that there is at least ONE fuel pump that should retrofit with a 4 to 6 PSI output pressure.. where this one had a 95 PSI max pressure..

there are a bunch of them in the 15 to 25 pound range that you could pick up and then use a pressure regulator to reduce the fuel pressure.. a LOT of people have been doing this but using a return type of fuel pressure regulator to avoid DEADHEADING the fuel pump...

most of the fuel injection type of pumps do not have a pressure relief valve or a bypass.. they will when the flow is restricted.. just build to max pressure and have a very short life span.. the idea of using a 15 pound pump is to eliminate the restrictions in the distance from the tank to supply the engine with as much fuel as the needle and seat can handle..

you can post images to photobucket and paste the links here.. its free.. and a picture is worth a million words..

chopped · March 04, 2012, 11:27:14 AM

Quote from: wayne pettythe fittings got snapped off the top of the fuel pump assembly??

Yup, this is my problem. Thought I could redrill the same hole and use a fitting to sort of replace what was there, drop a hose near the tank bottom and be good. (I see my copy and paste did no good)

idrivejunk · March 05, 2012, 12:22:45 AM

I broke one like that on a later year Ram when removing the bed. Never again, but I was able to fix it thanks to a guy who had already broken a couple. Luckily it was a vent hose and 3M panel bonding adhesive held it. Glued a small piece of plastic vacuum pipe into the nub and let that cure then the next day I glued the broken piece back onto that. So it had a sleeve and a reduced ID but I could plug it back in and save the fuel pump.

chopped · March 05, 2012, 06:27:40 PM

Quote from: "idrivejunk"I broke one like that on a later year Ram when removing the bed. Never again, but I was able to fix it thanks to a guy who had already broken a couple. Luckily it was a vent hose and 3M panel bonding adhesive held it. Glued a small piece of plastic vacuum pipe into the nub and let that cure then the next day I glued the broken piece back onto that. So it had a sleeve and a reduced ID but I could plug it back in and save the fuel pump.

I can use that trick on the vent but I still have the feed to fix.

wayne petty · March 05, 2012, 07:53:54 PM

to repair or replace a snapped off filler...

you need one of several things.. and are those plastic or metal..

i have taken a compression x pipe adaptor and drilled the stop in the middle.. used that like a bulk head fitting.. with a piece of steel fuel line sticking all the way through..

like this one...

http://www.oreillyauto.com/site/c/detail/DOR1/43244.oap?pt=N1163&ppt=C0248

with the stop drilled out .. you can stick a steel tube all the way through. with the end sticking out..

if the plate for the top of the tank is steel.. you can use LOW temp silver solder to fasten it into place.. or creatively thread two brass nuts to 1/4 pipe thread.. cut one in half so you have something like a JAM nut. run the tap way deep into that short nut.. so it will thread on all the way up to the HEX... then thread the other part way up the tap so it will become a locking nut.. this makes a CHEEP bulk head compression fitting..

i am taking that you are going to create a suction pick up for a mechanical fuel pump.. or are you going to continue to use a pump in the tank...

chopped · March 06, 2012, 07:04:43 AM

Something like that should work fine. The removable part is all plastic. I'll be using a frame mount fuel pump if the engine doesn't support a mechanel one, haven't looked into that yet. The engine has a cover plate where a pump would go, I assume I would see a cam in there if it's set up. It's a Dodge small block. Skip