Well, I've just about got my spraymist system working but I wanted to give a bit of background on what I've figured out and changed so far...or for advice in the case I'm doing something wrong.
When I bought the system, I knew it didn't work and the guy a bought it from just bought it as well and assumed it had a blocked filter. Well I was considering ditching the whole system all together, but the more I read about setting up a flood system...the less I wanted it (splashing, funky growths etc.) I've talked with a few machinists that suggested that misting is fine and should get in the air if it's done right (I don't know if this is true, or what is right, heavy mist, light mist?) I figure worse case it still works good as an airblower. After my rebuild, the thing really blows (so to speak).
Well, anyway, back to the system not working. I ended up having to take the whole system aparts...I mean the whole system! It had hardened white crusty crap through everything. Every tube was completely filled. It took parts cleaner, drill bits, gasoline and even carb cleaner to open everything back up. Even more strange - the pick-up pipe that goes down into the old coolant appeared to just end with no filter (unlike the part list shows)...hmmm, weird...and it was only about 4 inches long...the tank is about 8 inches...well then when I was dumping the old fluid all these little parts started coming out...plus after I cleaned tube I noticed that the end was not a clean cut but completely disolved. What is in that fluid that would completely disolve all the metal except the case and the screen that used to be part of the coolant pickup? I'm in the process on building a new pick-up now. I was thinking about putting a fuel filter on the end (motorcycle style) but I wasn't sure what I was going to use for coolant yet...more on that later.
The first little tank was also lined with white crusty crap. I'm not sure why because it appears that this tank is just a water trap...anyone know? I could only think that maybe the guy who used it before had a tool-oiler. Well, this filter was completely brown and in desperate need of replacement. Since it was just an air filter I took the old system off completely and replaced it with a small K&N style filter I had laying around...works better and looks cool. The rubber gaskets were completely shot...have you tried to find rubber gaskets lately? Not an easy thing to find. I took a spare mountain bike tube and cut out some new gaskets. That worked good...and should handle 80 PSI no problem.
I also stripped the paint which was part factory and part spray paint...anyway it looks pretty cool now. Just clean cast aluminum. If the rest of my garage wasn't such a train wreck right now I'd post pics.
Anyway...it was rewarding cleaning something that was such a wreck and getting a collant system working without spending any money and I wanted to tell someone (my wife sure didn't want to hear about it). Here's where I need HELP! Can anyone recommend an oil? Something that won't skin-over or seperate. Any other advice or concerns with my handywork?