slyck(at)frontiernet.net Guest
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Posted: Fri Jul 31, 2009 2:37 pm Post subject: it's always something... |
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OK guys, I've been farting around with my fuel system for much too
long. Bought more fuel pumps at a higher press rating,
removed the regulator, had fuel dripping from the carb after landing
(after a really nice ride)
Decided to replace the regulator and put a temporary gauge in to see
what is really going on.
Mistake #1: do not buy a cheapo tee and gauge from auto zone/advance/
pep boyz, etc
The plastic tee was ok but the chinee
bourdon tube in the gauge was a gusher
took it back for a refund
all I wanted was a temporary reading
bought a real brass 1/8" tee, turned two mini barb fittings from a
nipple on my lathe
Ran a remote line of space age 1/4" super tube past a mini valve to
an ultra strong 30 lb gauge with built in snubber
(facet pumps give a really jerky reading until pressure limit)
Tried to hook up the mess.
black (NAPA/Gates/??? hose started splitting at attempts to slide on
the fittings.
This stuff is about 6 years old.
Gave up in disgust and made myself a taco salad
Then I did some research:
the old SAE 30R6 black hose was dandy for gasoline but is not rated
for ethanol and/or "sour oxidized gas"
SAE 30R9 is overkill, rated for a working pressure of 100 lbs/burst
900, ethanol compatible
(really nice stuff though)
SAE 30R7 appears to be the correct application for non-FI, carbureted
systems.
working press 50/ burst 250
now to see if I can find some.
BB
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