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#1
06-08-2010, 10:59 PM
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Air Compressor Tank
 I went to drain my air compressor tank and noticed some rust..... did a screwdriver test and it punched right through the tank. Now I need a new tank... Grainger has several.... they are not cheap. My tank is like 10gallons so I noticed harbor freight has an 11gallon portable air tank. I am thinking of using it as my new compressor tank with some minor mods. Any ideas?
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08 R320 CDI current Past 95 E420 87 300D Turbo 5spd 90 300TE 83 300SD 85 300TD 92 400E 85 190D 
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#2
06-08-2010, 11:33 PM
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Those direct-drive, 3hp compressors with 20gal(?) tanks were selling like hotcakes a few years ago. They were loud, but ran all the impact wrenches you could ever want.
I'm thinking of something like this: (but mine is black and doesnt have any wheels) http://www.harborfreight.com/air-tools/oil-compressors/3-hp-21-gallon-115-psi-cast-iron-vertical-air-compressor-94667.html If you keep your eyes out, you might find someone throwing away one of those because the direct drive compressors on most of those were not built to last. Snag that from the garage path, pull the compressor and pipe your own compressor back in (I just put a hose with a QD so my normal compressor could fill it up if I needed... ...Or I could sell you mine...(I'm not going to Indy anytime soon though) -John
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2009 Kia Sedona 2009 Honda Odyssey EX-L 12006 Jetta Pumpe Duse (insert Mercedes here) Husband, Father, sometimes friend =)
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#3
06-08-2010, 11:37 PM
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I was looking at that compressor at HF... my guess it they are extremely loud. That would drive me crazy
 Found a used tank on CL but it's like 60gallons... my little 1HP setup would take days to fill that up. Been reading online about using a large propane tank but I dunno. Maybe I will call around to the welding/gas shops tomorrow and ask for a used tank. It would have to be something that has been pressure tested.
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08 R320 CDI current Past 95 E420 87 300D Turbo 5spd 90 300TE 83 300SD 85 300TD 92 400E 85 190D
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#4
06-08-2010, 11:47 PM
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Check your local pawn shop, I got mine for 20 bucks 20 gallon affair
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hum..... 1987 300TD 311,000M Stolen. Presumed destroyed
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#5
06-09-2010, 12:01 AM
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Be careful if you get a second hand one, it may have corrosion problems as well. You should have a second hand one hyrostatically tested prior to use. Propane bottles do not have the same pressure rating. I have a friend who is using an old oxy bottle. Its inverted so it will never hold water ~ less likely to corrode.
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Grumpy Old Diesel Owners Club group I no longer question authority, I annoy authority. More effect, less effort....  1967 230-6 auto parts car. rust bucket. 1980 300D now parts car 800k miles 1984 300D 500k miles  1987 250td 160k miles English import  2001 jeep turbo diesel 130k miles  1998 jeep tdi ~ followed me home. Needs a turbo. 1968 Ford F750 truck. 6-354 diesel conversion. Other toys ~J.D.,Cat & GM ~ mainly earth moving
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#6
06-09-2010, 12:36 AM
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this one was new, still had all the factory stuff with it, if it was used it was very little.
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hum..... 1987 300TD 311,000M Stolen. Presumed destroyed
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#7
06-09-2010, 12:54 AM
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I have yet to see one in a pawnshop for anything less than $80. I will keep my eyes open but the portable 11 gallon tank sounds pretty good.
I need shop air to clean out my a/c lines in the TD.. Guess I could put the new driveshaft in my '87 and try out the 5spd. Got 2 projects going on at once AND my SD threw an alt belt yesterday.. I better watch it or I might not have anything to drive... well there is the galant 
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08 R320 CDI current Past 95 E420 87 300D Turbo 5spd 90 300TE 83 300SD 85 300TD 92 400E 85 190D
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#8
06-09-2010, 02:31 AM
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You should consider getting a bigger compressor is your looking to buy used. There are plenty for sale on CL.
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With best regards Al
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#9
06-09-2010, 05:44 AM
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drain your tank often.
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'85 300SD (formerly california emissions) '08 Chevy Tahoe '93 Ducati 900 SS '79 Kawasaki KZ 650 '86 Kawasaki KX 250 '88 Kawasaki KDX200 '71 Hodaka Ace 100 '72 Triumph T100R
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#10
06-09-2010, 07:32 AM
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It may have been used very little but with the humidity you would soon have some condensation in the tank. If not drained, it will corrode, hence your problem, the new tank is your best bet.
If the tank was to fail with 120 psi in it. THE shrapnel wont say excuse me as it hits you!!!
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Grumpy Old Diesel Owners Club group I no longer question authority, I annoy authority. More effect, less effort.... 1967 230-6 auto parts car. rust bucket. 1980 300D now parts car 800k miles 1984 300D 500k miles 1987 250td 160k miles English import 2001 jeep turbo diesel 130k miles 1998 jeep tdi ~ followed me home. Needs a turbo. 1968 Ford F750 truck. 6-354 diesel conversion. Other toys ~J.D.,Cat & GM ~ mainly earth moving Last edited by layback40; 06-09-2010 at 10:36 AM.
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#11
06-09-2010, 09:31 AM
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Quote:
But there's a lot of humidity here. You would think people would coat the inside of tanks, but they don't
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Strelnik Invest in America: Buy a Congressman! 1950 170SD 1951 Citroen 11BN 1953 Citroen 11BNF limo 1953 220a project 1959 180D 1960 190D 1960 Borgward Isabella TS 2dr 1983 240D daily driver 1983 380SL 1990 350SDL daily driver alt 3 x Citroen DS21M, down from 5 3 x Citroen 2CV, down from 6
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