spray gun and air compressor for primer??...

ASSISTANCE Exterior
1

I’m going to my 91 DA myself, since the bodyshop is pricey. I’ve done a bit of research and this what I’ve understood. I already determined the nozzle sizes I need for each coat (primer, sealer, paint etc). Also with spray guns they have air consumption and pressure requirements, through CFM and PSI, and I have to use an air compressor that meets those requirement, in order for the spray gun to operate correctly. Now as I am searching for spray guns, I find many of them in with required air consumption: 9-14 CFM, and air pressure: 40-90 PSI, at good prices.

But the air compressors I am finding that have the same CFM range and air pressure as the spray guns are costing thousands. And I’ve reading many people spending as low as $280 or so for air compressors, and it does the job well for them. Home Depot, lowes, Sears, Harbor Freight etc. They all have the air compressors but the specs are lower then what the spray gun requires. Am I going have to spend thousands or so just for the air compressor? Can I still get good results if the air compressor is not in the spec requirements for the gun? Advices, Tips, Help? All appreciated.

2

I’ve been researching this too.
You can pick up an LVLP (instead of an HVLP) which has a lower CFM requirement… they are also a bit cheaper.
Guns have CFM requirements for a reason… if you use a compressor that is not in spec with the gun you will have to wait a few minutes between sprays for the compressor to repressurize so it will take longer and Im sure the results wont be as great.
Check out an equipment rental place to see if they rent high cfm compressors… def cheaper than buying one

check out autobody101.com
The forums there have TONS of info for you.

3

thought so too, thanks, i doubt home depot or lowes or any of those rent out air compressors? Also, a friend of mine told me that when sanding to bare metal to do a new primer, and no body filling, I would need to spray on epoxy primer. I thought that epoxy primer was only used prior to applying body filler, to prevent moisture from occuring correct?. And that spraying new primer is perfectly fine on bare metal.