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4 posts • Page 1 of 1
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why do some horseshoe tanks have threaded holes where nipples screw in others have nipples sweated or otherwise permanently fixed ? thanks!
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All OEM panhead horseshoe oil tanks are going to have the swagged-on nipple fittings. Aftermarket tanks have a bung welded into the tank that you screw a nipple fitting into. There might be an aftermarket tank out there with swagged-on fittings, but I haven't seen it. I suspect the bung method is cheaper and requires less special equipment.
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'36 and '37 tanks had banjo fittings for the oil lines. They have threaded fittings. There are several versions, all flat topped. '38-'39 had tapered fittings and a flat top. '40 and later all have tapered fittings and recessed tops. Swingarm models have battery strap tabs.