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Old 07-11-2011, 08:00 AM
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How to I tell tip size on old Delvilbus gun

My JGA gun has a 30 cap. It does have some markings on the needle but how do I tell if it is a 1.4, 1.6 or whatever

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Old 07-11-2011, 11:04 AM
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30 air cap

The 30 air cap sounds correct for a JGA gun. What is the needle and fluid tip say? If it is a siphon cup gun, they will more than likely be EX, if pressure feed, it should be an FF. These numbers should be on the edge of the fluid cap and on the needle when you pull it out of the back of the gun.
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Old 07-15-2011, 08:27 AM
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I guess the gun is a MBC - it say Type MBC on the side. Sure looks like a JGA. The needle says:

MBC-486
D-EX

Does this correlate to the tip sizes seen on "new" guns? Like a 1.4, 1.6 etc?
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Old 07-15-2011, 11:12 AM
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Gun tips

the air cap number indicates that it is a siphon feed gun. MBC is a better gun for painting a car than the JGA. Is a large needle and air cap, but do not know size related to new numbers you ar referring to. Suggest a call to a local out paint supply store that sells equipment as well and see what they can tell you. I used to sell this stuff 30 years ago so relate the the old numbers, but not the new. Sorry.
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Old 07-15-2011, 11:57 AM
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Great guns, my first three guns were 2 MBC's and JGA all three bought from a retired painter for $30 back in 70.
They came back then with only a 30 cap, used for lacquer, enamel and lacquer primer.

Later in or around 1980, they came out with an 80 cap to better shout the imrons and 2k primers.

I never knew what the real size of a 30 or 80 was but will say a 30 cap will spray todays bases and clears great--HOWEVER they were 23-26 efficiency rated guns, that mean about a quart gets on the car out of a gallon (so to speak) todays guns are 65-80%.
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Old 07-16-2011, 08:00 AM
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Thanks guys ,

I have pulled it out of retirement to do my 1985 S10 which I now have 2K primed.



I also fixed a couple of dents on my 1991 Nissan and after the 2K, put on S/S Urethane which I still have to buff out.



I have to finish stripping my 1967 Corvette front surround and then lay on some Epoxy primer - I had some lacquer paint failure due to wicking. Have cured the wicking with acetone wiping and will hope the epoxy primer will seal it up.



Just having fun with the old guns


I know I would be better of with HVLP but at this stage of the game, I don't want to invest in a new compressor and new guns - wouldn't make sense.
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