> > > > > > > > How well does JB Weld hold up submersed in oil?
     > > > > > > > > That could be used for both the attachment and heat transfer
     > > > > > >
     > > > > > > The overflow nipple (plastic) on my jeep broke a few years back
     > > > and
     > > > > > > instead of buying a whole new radiator I decided to fix it with JB
     > > > Weld
     > > > > > > and some alum tube. It worked great for about a year until I
     > > > decided to
     > > > > > > go on vacation. Driving through the desert in 108 deg heat the
     > > > stuff
     > > > > > > practically melted off (cracked and lost its seal and most of its
     > > > > > > strength). Soon I was out of water and overheating. Spent 36 hrs
     > > > of my
     > > > > > > vacation stuck in a place called 'weed' or something like that. I
     > > > now
     > > > > > > have a new radiator.
     > > > > > >
     > > >
     > > > > Probably good advice. I've never actually used it yet for anything.
     > > > > Has there been any known failures from the intake port flow mods that
     > > > Bruce
     > > > > and Tracy advocate on the six port secondarys? Or plugging small
     > > > vacume
     > > > > holes on intake manifolds?
     > > > > I would guess that port sees pretty close to 200 deg. while running.
     > > > >
     > > > > Ron Freier

     > > > JB weld is supposedly good to about 400 F; although I have my doubts
     > > > about that. I mended a crack in the radiator tank seam on my van about
     > > > 3 years ago, and it has held up just fine. I also used it to plug the
     > > > holes in the tops of the rotor oil feed banjo fittings where I cut off
     > > > the vacuum line connectors. Only a few hours on the engine for the dyno
     > > > runs, but its fine and looks the same as before the runs.
     > > >
     > > > Were you careful about the mixing proportions Dave?
     > > >
     > > > Al

     > As with everything else in life, use it where and how it makes sense. I
     > have somehow gotten the reputation of using JB Weld for everything. Not so.
     > Al is right about the mixing. I would also add that surface preparation is
     > super important when using any epoxy.
     >
     > Tracy

JB weld or any plastic adhevise start to break down at 200F

I have found out the hard way after 40 years as a machine rebuilder I have seen it tryed on many
things and none of them has worked over 200F.

                                                 bill shaffer

                                                shafferaviation@yahoo.com

 
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