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Wednesday, July 27, 2016

GMC body leak test

I've seen others do a leak test by pressurizing the interior body and then using soap spray to find leaks. We have a windshield leak that happens when driving in rain. Hopefully now that I think I found it and sealed it it won't leak at least there.
   Craigslist furnace blower and 12" flex duct from a mobile home AC unit

      Bubbles from pass side window
                                        Think this is the one I was really after

                                            Lots of air coming out!

Friday, July 22, 2016

Brass thread insets in FRP tank flanges

 1/4-20 inserts for the valve flange, 8-32 for the sender flange. Sandblasted the inserts to get them real clean.
 West Epoxy instructions say bowl wax can be used for non stick coating on threaded fasteners. Harvey no-seep wax ring was only $1.48.
Hope this works out.

Wednesday, July 20, 2016

hotwire cutter

 Hotwire cutter for foam. 24 gage wire seems to run best at 19 volts at 40 inches.
 250 watt power supply. Volts adjust with a wiper across transformer windings


304 stainless tank bungs