Since the factory fittings are actually steel, you can weld on standard steel npt (3/8 npt is good size) pipe nipples to them to convert to standard threads. Also, an unloader valve is only needed on electric air compressors, whereas the engine is already running when the compressor is engaged.
get yourself some Rector Seal great for sealing and keeping metal threads from corroding also lubes as it never hardens. like your truck my pop has a 78 been stole twice and got it back.. that bed tank looks quite old. i like to replace any tank that holds pressure aftef 10 yrs regardless of how it looks (welds degrade w/expansion/contraction pressure). just my 2 cents. cool build!
What kind of oil should be put in these to keepp them maintained. I just got one and I am in the process of placing new gaskets and cleaning up the unit. Thanks
It's hard to say how long it took to build. There have been several iterations of my onboard setup on this truck. The bracket consumed the most time, but still only took a few hours. Provided you have all the parts, a setup similar to this could be finished in a weekend.
why are your gauges inside the cab? seems to me going in the cab to look at the pressures and work the switches is inconvenient encounter logical period seems you would want them near where your outlet connections are or somewhere more useful then climbing in and out of the cab.
I threaded some pipe sleeves onto the ac fittings that were the same thread pitch. Pipe threads are tapered and AC fittings are not so I used a lot of teflon tape. I wouldn't recommend going that route though; instead, take the ac fitting completely out and drill and tap 3/8" NPT inside the two threaded flanges and screw in 90 degree 3/8" street elbows.
I want to do a crazy one. im a broke engineer college kid. im think about doing something like this and have one or two regulators like 5psi to 8psi and use the air as a Supercharger. Any in put ??
Kurt Moore no where near enough cfm to use as a supercharger, ac compressor starts at like 12 cfm where a v8 engine probably eats around 750 cfm on a naturally aspirated engine you would need way way more air
