I spent 3 weeks trying to get one of these fittings off without damaging the
tank fittings. I used a good quality flare wrench to prevent damage to the
nut and tried everything except heat from a torch to free that nut (no
courage). That included just applying penetrating oil, wrapping the fitting
with a rag soaked in penetrating oil and letting it soak for days, heat from
a hair dryer (not enough heat), tapping on the fitting to vibrate the
connection, and probably some other things I have forgotten. In the end I
still had a good nut thanks to the flare wrench, but it was still solidly
attached to the tank.
I ended up cutting the metal line a few inches above the tank fitting and
again 8-10" away from the tank fitting and using a piece of flexible fuel
hose to fill that gap.
The second fitting came off easily. When I reattached it to the tank I made
sure anti-seize compound was on the threads to keep that one free when it
needs to come off again.
When I tried to experiment with removal methods on the tank on my parts car
I snapped the tank fitting on the first attempt and broke a cheap flare
wrench on the second fitting. Make sure when you use a flare (sometimes
called tubing) wrench that is of good quality and has a lot of metal
surrounding the interior surfaces of the wrench so that the wrench itself
cannot distort under pressure.
Tom
69 2000 "Mr. Hyde"
Portland, OR
-----Original Message-----
From: owner-datsun-roadsters@autox.team.net
[mailto:owner-datsun-roadsters@autox.team.net]On Behalf Of Fred
Schroeder
Sent: Friday, May 23, 2003 7:37 AM
To: Dixon, Clifton, TSG, 134ARW, CP; datsun-roadsters@autox.team.net
Subject: Re: fuel line to gas tank fitting?
>Also, what is the name of that type of line connection (at the tank?)
The supply and return are both standard flare nuts. They are different
sizes (sorry I don't remember the sizes) and are readily available.
However, they are steel not brass. Standard plumbing fittings are brass and
I don't know how well they would work. I have to assume that there was a
reason that Datsun used steel. Also, the fittings on the tank are steel as
well. After 30 years of rust they can be all but impossible to get apart.
One of mine snapped when the tank was removed. 8^(((
Best regards,
Fred Schroeder
'70 2000
SRL311-13359
TDROC
Home page http://home.texoma.net/~sitsinwest/
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