SOHC Posted October 2, 2012 Share Posted October 2, 2012 I had to cut the bottom out of my Fords petrol tank as it was full of pin holes, my plan is to get it acid dipped and weld a new bottom back in, I was hoping to get away without putting in a tank sealer kit. I used a POR 15 kit about 8 years ago in a bike but now its failing, and that Kreem brand is real shit, it lasts about a month. I am over tank sealers My question is will it rust like crazy if I leave it bear steel inside? Quote Link to comment Share on other sites More sharing options...
Testament Posted October 2, 2012 Share Posted October 2, 2012 treat the steel with some phosphoric acid based metal prep, then fully wash, dry then oil the inside. should last pretty well then. Quote Link to comment Share on other sites More sharing options...
SOHC Posted October 2, 2012 Author Share Posted October 2, 2012 treat the steel with some phosphoric acid based metal prep, then fully wash, dry then oil the inside. should last pretty well then. Cool, maby if I slosh some diesel round inside? Quote Link to comment Share on other sites More sharing options...
Sorensin Posted October 2, 2012 Share Posted October 2, 2012 I know you said you're over tank sealer but tank seal over the new steel, also oxy weld the patch dont mig it. Quote Link to comment Share on other sites More sharing options...
Jase Posted October 2, 2012 Share Posted October 2, 2012 could get it zinc dipped? Quote Link to comment Share on other sites More sharing options...
SOHC Posted October 2, 2012 Author Share Posted October 2, 2012 Yer I was going to gas weld it, I cut the side out last night and patched it but the sides are soldered and that turned to shit, don't trust it to seal with the mig, I don't think they can zink the inside of a tank successfully, only as far as the anode will go. Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted October 2, 2012 Share Posted October 2, 2012 hot galv dip? Quote Link to comment Share on other sites More sharing options...
SOHC Posted October 2, 2012 Author Share Posted October 2, 2012 hot galv dip? The soldered seams make that not posable Quote Link to comment Share on other sites More sharing options...
Sorensin Posted October 3, 2012 Share Posted October 3, 2012 hot galv dip? The soldered seams make that not posable By the sounds of it you wouldn't get much else other than the patched piece of steel back if you tried that. Pop rivet soldered seams and tank seal the crap out of it again Quote Link to comment Share on other sites More sharing options...
SOHC Posted October 3, 2012 Author Share Posted October 3, 2012 hot galv dip? The soldered seams make that not posable By the sounds of it you wouldn't get much else other than the patched piece of steel back if you tried that. Pop rivet soldered seams and tank seal the crap out of it again haha, sounds like the time they put my chromed parts in the wrong stripper barth. I refuse to use tank sealer Quote Link to comment Share on other sites More sharing options...
Bling Posted October 3, 2012 Share Posted October 3, 2012 Finding a replacement tank isn't an option? Quote Link to comment Share on other sites More sharing options...
SOHC Posted October 3, 2012 Author Share Posted October 3, 2012 Finding a replacement tank isn't an option? I can get a reproduction tank but there expensive, its 76 years old, I will put up some photos tomorrow of the what I have done to the tank. Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted October 3, 2012 Share Posted October 3, 2012 heat it and separate pieces. galv dip pieces. re- assemble Quote Link to comment Share on other sites More sharing options...
SOHC Posted October 3, 2012 Author Share Posted October 3, 2012 heat it and separate pieces. galv dip pieces. re- assemble They have rolled the seamed then soldered them to seal, it won't come apart Quote Link to comment Share on other sites More sharing options...
Testament Posted October 3, 2012 Share Posted October 3, 2012 Repair by brazing rather than welding maybe? Quote Link to comment Share on other sites More sharing options...
SOHC Posted October 4, 2012 Author Share Posted October 4, 2012 I give up, its going to the scrap, I have made a huge mess, everything I did made it worse, the baffles have come loose, I have wasted heeps of solder and brazing rods, its just a hunk of shit, filled it wp with phosphoric acid and it revealed more holes Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted October 4, 2012 Share Posted October 4, 2012 hahaha. aluminium drop tank? Quote Link to comment Share on other sites More sharing options...
SOHC Posted October 4, 2012 Author Share Posted October 4, 2012 hahaha. aluminium drop tank? I was thinking more about a bit of 10" OD ally-clad exhaust tube, some baffles and end caps, cut the filler out of the old tank, the tank is behind the front seats. Quote Link to comment Share on other sites More sharing options...
SOHC Posted October 18, 2012 Author Share Posted October 18, 2012 plane steel 10" exhaust tube is over $300 plus GST per meter, thats fucken ridiculous, Anyway I made a new tank from rolled sheet, unsoldered the fittings and welded them onto the new tank Quote Link to comment Share on other sites More sharing options...
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