Salvaging evap guide

[bartx]

Sdumper was asking couple days ago for a guide how to salvage evap. So here it is I decided to braze this evap once again, because I have leaks and as you probably now, bronze brazing rods hates any corrections. There is a small guide how to salvage evap.

Here is the evap:



At the beginning I make two cuts with my dremel cutting blade. First is along the pipe, second between the steps (that's stepper design):





Then, use flat screwdriver to bend pipe as much as possible:



After that, we can start heating. I used two torches (small propane-oxy and bigger one propane only). Now we have to unwrap pipe. It can be done with screwdriver or pliers, all methods are good At the end we must remove the pipe, capilary usually break just above the evap, so we have to drill hole with the same diameter. Photos with lamp and without.





Still hot evap after removing all useless things





And at the end. Now only cleaning left - I prefer citric acid. And finally some filing to remove all remains of bronze.



Pic after cleaning with citric acid:

[sdumper]

Thanks!!!!!

Awesome write up!!!

[sdumper]

Ron/Chris/Kayl, can you guys sticky this thread so we can find it when we need it?

[[XC] gomeler]

Guide inserted into -> http://www.xtremesystems.org/forums/....php?p=1535018 under the Evap Discussions.

Which reminds me somebody needs to rework all those guides. Maybe after I condense that autocascade thread..

[sdumper]

Guide inserted into -> http://www.xtremesystems.org/forums/....php?p=1535018 under the Evap Discussions.

Which reminds me somebody needs to rework all those guides. Maybe after I condense that autocascade thread..

Hey at what temp does that auto-C thread condense?

[n00b 0f l337]

Hey at what temp does that auto-C thread condense?

A little warmer then when hell freezes over

Thanks Gom.

[ultralo1]

If all you are doing is trying to seal up the leaks after using 15% rods, use 45%-56% silver braze. Apply flux over the areas that are leaking, heat up the area and rebraze with high silver content brazing alloy.

[sdumper]

If all you are doing is trying to seal up the leaks after using 15% rods, use 45%-56% silver braze. Apply flux over the areas that are leaking, heat up the area and rebraze with high silver content brazing alloy.

Sometimes it becomes necessarily to actually access the interior of an evap. For instance if you want to drill a second feed for a hot gas bypass or if you want to replace a broken flexline in a system where the captube was run through the suction line.

[bartx]

In most cases it's better to disassemble it and braze it once again, especially when using bronze brazing rods. 70% silver 30% copper works the best (with flux), but it's kinda expensive and needs really high temperature.