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#1 |
Registered User
Join Date: Oct 2009
Location: Great White North
Posts: 1,520
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Gas Tank Advice
I'm looking for some opinions on what to do with the Gas tank for my 72 Blazer. The body is currently off the frame and I have the original tank out. On the outside the tank looks very clean and solid, however, on the inside it is very rusty. It definitely got some moisture in it over it's first 42 years of life.
Should I: 1) Acid dip the tank ( this will clean off everything inside and out including the rust. It would be all bare metal again. Then I would need to paint it and I assume just leave the inside bare metal again unless I coated it with one of those sealer kits. Cost is about $200 to dip it plus painting. 2) Buy one of the replacement tanks and swap the fill neck over off of my original. The new ones are bare metal so it would need painting also. Cost is about $200 for the tank plus cost to swap the neck (I'm guessing $50). plus painting. Decisions, decisions, thanks for any input. Jeff.
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Jeff. '72 Blazer K5 "Camshaft opinions are like belly buttons; everyone has one and no two are alike" My Blazer Build: http://67-72chevytrucks.com/vboard/s...d.php?t=626752 My Engine Build: http://67-72chevytrucks.com/vboard/s...d.php?t=637336 |
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#2 |
Registered User
Join Date: Aug 2013
Location: Central Coast, CA
Posts: 774
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Re: Gas Tank Advice
I'm trying to make the same decision myself. I have an original tank and I can have it acid dip and relined for $175 but it has a couple of dents and he's not sure he can pull the dents out. I can get a new steel one and swap the necks and he said he would do it for $45..
For me, a new tank at $150 and $45 to swap the filler neck makes better sense for me. The original tank I have doesn't have the sending unit or lock ring so I would need to buy these either way. I'm leaning towards buying a new steel tank and swapping the filler neck.
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My Build Thread 72 K5 http://67-72chevytrucks.com/vboard/s...d.php?t=628612 Build version 2.0: 72 K5 6.0 LQ9, 4L80e, NP205 http://67-72chevytrucks.com/vboard/s...d.php?t=793192 ____________________________________________ 1972 CST K5 Blazer Dark Olive |
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#3 |
Registered User
Join Date: May 2008
Location: 204
Posts: 903
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Re: Gas Tank Advice
I would try and keep the original. por-15 or Eastwood make products to refurb the inside of the tank.
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1969 Chevy Custom Camper 3/4 ton Rust free survivor 1972 Chevy Blazer CST 4x4 Almost Rust free survivor 1972 GMC Jimmy 2wd Undergoing surgery |
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#4 |
Registered User
![]() Join Date: Dec 2002
Location: Northern Virginia
Posts: 1,269
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Re: Gas Tank Advice
I swapped mine out. Friend who restores 100 point cars told me to get the oil off the outside of the new tank and clear coat it. Thats the way it was when it was new and it will last. So that's what I did.
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#5 |
Registered User
Join Date: Aug 2013
Location: Central Coast, CA
Posts: 774
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Re: Gas Tank Advice
Agree ^
I actually changed my mind.. I'm going to restore the original. I heard the aftermarket steel tanks are all made in China and after having nightmares with the poly tank I'm not taking any more chances
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My Build Thread 72 K5 http://67-72chevytrucks.com/vboard/s...d.php?t=628612 Build version 2.0: 72 K5 6.0 LQ9, 4L80e, NP205 http://67-72chevytrucks.com/vboard/s...d.php?t=793192 ____________________________________________ 1972 CST K5 Blazer Dark Olive |
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#6 |
Registered User
Join Date: Jul 2010
Location: Knoxville,TN
Posts: 1,185
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Re: Gas Tank Advice
Apple cider vinegar works wonders on rusty tanks , if works great on small parts or even soak a towl in vinegar and put it on anything rusty.
I use it all the time on machiney all the time.
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1972 Custom Deluxe 20 4x4 burb 1971 GMC SWB CST 4x4 1972 GMC k20 4x4 (X- brush truck ) 1971 Chevy CST Blazer 4x4 1971 Chevy C/10 1970 Cab Chassis C30 157" 1971 Cab Chassis Custom 30 Deluxe 157" 292/4spd ( Napco Replica ) 1988 Chevy V30 4x4 wrecker challenger 4812 |
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#7 |
Registered User
Join Date: Jan 2014
Location: belleville ontario
Posts: 354
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Re: Gas Tank Advice
Fill full of molasses/ water mix.
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#8 |
Registered User
Join Date: Jul 2014
Location: Lakewood, Co.
Posts: 219
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Re: Gas Tank Advice
My tank was rusted and dented, and some of the dents were creased and possibly leaking a little bit, so I bought the tank kit from LMC for $200 and had the filler neck swapped at a local radiator shop for $85. After it was all said and done, the only thing I might have done different is I think I would have gone for a polyethylene tank rather than a metal one to reduce the risk of sparks rather than using the roofing tar paper. But it works, I'm not unhappy with it, at all.
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My toys: 1971 GMC Jimmy 2008 Hummer H3 Adventure 2003 HD Road King |
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