ian.stewart
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| posted on 8/12/22 at 07:09 PM |
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Changing fuel supply type.
Im trying to save myself a lot of work, Im converting my 20XE from 45s to Jenny injection, not wanting to have to cut up a new tank that I have just
installed, and run extra fuel/return line. on a previous build BEC there was no return plumbing for fuel, can I convert My Jenveys to run as a non
return system? or will this open a can of worms with things like bleeding air, and fuel vaporisation?
Something different, Very different..............
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Simon
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| posted on 8/12/22 at 08:21 PM |
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Surely you could put the return feed in with minimal "damage" - a drilled hole (in the top or side) with tube inside tank to return fuel to
bottom of tank and return feed from front or car- all sealed by compression/gaskets
Something like this
https://www.carbuilder.com/uk/m10x1-red-anodised-aluminium-straight-8mm-hosetail
[Edited on 8/12/22 by Simon]
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scudderfish
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| posted on 9/12/22 at 07:09 AM |
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I added a small pipe to the fuel sender fitting on the basis that if I screwed it up, it was replaceable. Worked fine.
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40inches
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| posted on 9/12/22 at 11:33 AM |
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I used one of these Aircraft tank fitting
If it's cleared for aircraft use that's good enough for me
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theconrodkid
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| posted on 9/12/22 at 01:10 PM |
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quote:
Originally posted by 40inches
I used one of these Aircraft tank fitting
If it's cleared for aircraft use that's good enough for me
same here, just be sure to de-burr the inside surface or you can cut the rubber washer....ask me how i know 
who cares who wins
pass the pork pies
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ian.stewart
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| posted on 9/12/22 at 04:55 PM |
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Now im really confused, just checking over the Jenveys, and not quite what I was expecting, the fuel rail only feeds from one end, the other end is a
blank,
Something different, Very different..............
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snapper
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| posted on 9/12/22 at 07:15 PM |
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It will have a pressure relieve valve with a return to the tank, it’s what’s known as a dead head system.
You can have a pump that will not pump past a certain pressure but these usually have some form of ECU control
The simple non-return dead had fuel rail usually uses an in tank fuel pub with built in bypass any other system will need a return
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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SteveWalker
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| posted on 9/12/22 at 09:37 PM |
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quote:
Originally posted by scudderfish
I added a small pipe to the fuel sender fitting on the basis that if I screwed it up, it was replaceable. Worked fine.
Exactly what I did. The sender unit already had a feed and return, but I added a second, shorter feed (teed into the first, via a valve), so the pump
picks up until the end of the short pick-up keeps being uncovered and letting air in, giving a warning of running out and allowing me to close the
valve, forcing pick-up only from the longer one, so acting as an inbuilt reserve.
When E10 became the norm, I replaced the sender and pick-ups (which corroded badly in it) with a stainless-steel disk, with stainless feeds and
returns silver-soldered into it and a plastic/stainless magnetic float and reed-chain type sender unit bolted through the disk (my tank is stainless
anyway).
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