Blazer Poly Tanks? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

darrel_s · 07-03-2002, 12:22 PM

Have the original steel tank in my Blazer with couple of pin holes in it.

Better to spot weld it up and pour in some tank sealer, or buy a replacement poly tank?

Anyone bought one. Opinions?

Low69CST · 07-03-2002, 12:25 PM

I have a poly tank. I'm gonna use it, but I think it sucks. you can't get the vent fittings started straight in the plastic, theres always the heat and puncture issue too.

darrel_s · 07-03-2002, 12:35 PM

Thats what concerns me. I've seen one guy that had a tank with one side pressed in. Looked like it was imploding due to incorrect venting or something. I take it that they are not very thick. What are the issues with the vent holes you mentioned?

busterwivell · 07-03-2002, 12:47 PM

I would call Wes.......that's where I got my poly tank.......If you decide to try and weld your tank.......well, we'll talk to you in the next life. I'm betting the guy with the shrunken tank plugged all the vents. There is something to be said for doing it the RIGHT way!

darrel_s · 07-03-2002, 01:04 PM

Not Hindu, but thanks for the concern.

Although I'm sure someone somewhere in the past has actually tried it.

The tank has been out of the blazer for awhile now. So hopefully the only bright light I will be seeing is the spot weld.

My only concern with repairing the old tank is how long and how well the tank sealer actually works.

colohusker · 07-03-2002, 02:14 PM

Doesn't matter how long it's been out, you'll still get vapors in it from any residue in it. The best way is to fill the tank with co2, either from a bottle, or by putting some dry ice in it before you weld it.

Scott

Low69CST · 07-03-2002, 02:23 PM

Sometimes radiator shops will also work on gas tanks too. My dad has welded up gas tanks for small engines. You can do it if you just practice saftey, but I wouldn't want a career welding gastanks.

Mixup · 07-03-2002, 03:11 PM

I have a poly tank in my pickup and it IS vented and it IS collapsing on one side.It will be over 105 here in the desert for about 3 months and I don't think they can take the heat. Yes most of the new vehicles on the raod have poly tanks but I think they are made alot better then that poly blazer tank.

darrel_s · 07-03-2002, 03:58 PM

Thanks for the advise guys. Looks like I'l stick with the old.

NuBomb · 07-03-2002, 11:38 PM

Took mine to a radiator shop and had them do the work. It was less than $100 and has worked out great. Worked out great for me.

07-03-2002, 12:22 PM	#1
darrel_s Registered User Join Date: Feb 2002 Location: Denver, CO, USA Posts: 212	Blazer Poly Tanks? Have the original steel tank in my Blazer with couple of pin holes in it. Better to spot weld it up and pour in some tank sealer, or buy a replacement poly tank? Anyone bought one. Opinions?

07-03-2002, 12:25 PM	#2
Low69CST Registered User Join Date: May 2000 Location: Frankfort, Kentucky, USA Posts: 2,163	I have a poly tank. I'm gonna use it, but I think it sucks. you can't get the vent fittings started straight in the plastic, theres always the heat and puncture issue too. __________________ '69 CST Short fleetside Lowered, 400 small block, 700R4, 4 wheel disc brakes, front sway bar & rear camaro sway bar (in progress) '87 V10 4x4 Short Fleetside Quad Suspension and Dual Tanks

07-03-2002, 12:47 PM	#4
busterwivell Registered User Join Date: Jan 2002 Location: Sahuarita, AZ USA Posts: 2,033	I would call Wes.......that's where I got my poly tank.......If you decide to try and weld your tank.......well, we'll talk to you in the next life. I'm betting the guy with the shrunken tank plugged all the vents. There is something to be said for doing it the RIGHT way! __________________ Bill - Tucson, AZ 47 Chevrolet 2 dr sedan 56 Chevrolet 210 2 dr sedan 66 Chevrolet Malibu 2 dr 4 speed 71 Chevrolet C30 Longhorn 86 Chevrolet Monte Carlo SS (Sold) 01 Chevrolet Tahoe IM - BUSTERWIVE@aol.com

07-03-2002, 02:14 PM	#6
colohusker Registered User Join Date: Apr 2002 Location: Longmont, CO Posts: 436	Doesn't matter how long it's been out, you'll still get vapors in it from any residue in it. The best way is to fill the tank with co2, either from a bottle, or by putting some dry ice in it before you weld it. Scott __________________ ------------------------------------------------ I say it's only money, my wife says it's only a truck.... '71 C10 Deluxe, factory ac, ps, pb, should be done by 2102 Longmont, CO husker95@hotmail.com

07-03-2002, 02:23 PM	#7
Low69CST Registered User Join Date: May 2000 Location: Frankfort, Kentucky, USA Posts: 2,163	Sometimes radiator shops will also work on gas tanks too. My dad has welded up gas tanks for small engines. You can do it if you just practice saftey, but I wouldn't want a career welding gastanks. __________________ '69 CST Short fleetside Lowered, 400 small block, 700R4, 4 wheel disc brakes, front sway bar & rear camaro sway bar (in progress) '87 V10 4x4 Short Fleetside Quad Suspension and Dual Tanks

07-03-2002, 12:35 PM	#3
darrel_s Registered User Join Date: Feb 2002 Location: Denver, CO, USA Posts: 212	Thats what concerns me. I've seen one guy that had a tank with one side pressed in. Looked like it was imploding due to incorrect venting or something. I take it that they are not very thick. What are the issues with the vent holes you mentioned?

07-03-2002, 01:04 PM	#5
darrel_s Registered User Join Date: Feb 2002 Location: Denver, CO, USA Posts: 212	Not Hindu, but thanks for the concern. Although I'm sure someone somewhere in the past has actually tried it. The tank has been out of the blazer for awhile now. So hopefully the only bright light I will be seeing is the spot weld. My only concern with repairing the old tank is how long and how well the tank sealer actually works.

07-03-2002, 03:11 PM	#8
Mixup Registered User Join Date: Jan 2002 Location: Henderson, NV Posts: 358	I have a poly tank in my pickup and it IS vented and it IS collapsing on one side.It will be over 105 here in the desert for about 3 months and I don't think they can take the heat. Yes most of the new vehicles on the raod have poly tanks but I think they are made alot better then that poly blazer tank. __________________ 1980 Chevy Shortbed Pickup 1969 Z28 engine Turbo 350

07-03-2002, 03:58 PM	#9
darrel_s Registered User Join Date: Feb 2002 Location: Denver, CO, USA Posts: 212	Thanks for the advise guys. Looks like I'l stick with the old.

07-03-2002, 11:38 PM	#10
NuBomb Registered User Join Date: Jan 2002 Location: Canton, Georgia, USA Posts: 1,119	Took mine to a radiator shop and had them do the work. It was less than $100 and has worked out great. Worked out great for me. __________________ Jeremy (NUBOMB) 72K5 CST 350/350/205 1951 Chevy 1/2 ton North Georgia Group "... And the first rule to being a man is you gotta spend your life doing crap you don't wanna do." Red Forman.



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