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Sportster Motorcycle Engine Conversions Advice, questions, and tips for 1200, 1250, 1340, 1450 etc... for Sportster and Buell motorcycle engine conversions

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1275, big bore kit, custom build, custom oil tank, lithium ion battery

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  #401  
Old 16th April 2021
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  #402  
Old 16th April 2021
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So shopping around on the internet is cool and all but when your local hoses and fitting Independent has exactly the right fitting as well as something cool for a future tank mod project..... well, that's just dandy.

The 1/8MNPT x1/8FNPT low profile fitting is exactly what I needed to give me all the clearances. If your local doesn't have them, Lowbrow does.
I'll be drilling out the male end to 1/4" to keep the flow diameter as wide as possible without affecting the fitting's ability to make a seal in this non-pressurized oiling system. The rest of the oil lines wil be 3/8" I.D. or 6AN.

These other bits are Scully Flanges for use in a winter project.
Itty bitty sight gauges fit in them and when I order a fresh tank, (because bringing a welder a tank that's had gas in it is dangerous and kind of a dick move unless properly purged) then I can have 3 of these along the tank to get a quick and easy sight ref on fuel state. I'll also be relocating the Motoscope mini to a vertical position along the back of the new tank. The scope has a setting to display readouts vertically.


Last edited by BestCoastXL; 16th April 2021 at 20:53..
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  #403  
Old 16th April 2021
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Quote:
Originally Posted by BestCoastXL View Post
So shopping around on the internet is cool and all but when your local hoses and fitting Independent has exactly the right fitting as well as something cool for a future tank mod project..... well, that's just dandy.

The 1/8MNPT x1/8FNPT low profile fitting is exactly what I needed to give me all the clearances. If your local doesn't have them, Lowbrow does.

These other bits are Scully Flanges. Little Bitty sight gauges fit in them and when I order a fresh tank, (because bringing a welder a tank that's had gas in it is dangerous unless properly purged) then I can have 3 of these along the tank to get a quick and easy sight ref on fuel state.

One of my neighbors a few shops down from mine used to weld a lot of gas tanks, and he filled them with gasoline. According to him, as long as there is no air in the tank, it will not explode. He welded a hole in the bottom of my tank on my shop truck with the tank fully loaded and I stood right there while he did it. It did not explode.
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  #404  
Old 16th April 2021
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Damn that sounds scary!

Like holding a high-power line if you are not grounded......no thanks
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  #405  
Old 16th April 2021
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Quote:
Originally Posted by wedge View Post
One of my neighbors a few shops down from mine used to weld a lot of gas tanks, and he filled them with gasoline. According to him, as long as there is no air in the tank, it will not explode. He welded a hole in the bottom of my tank on my shop truck with the tank fully loaded and I stood right there while he did it. It did not explode.
YEP - Gasoline is explosive as a gas (vapor) but not as a liquid...
http://wyomingworkforce.org/_docs/os...flamliquid.pdf

Still --- --- Not my idea of safety...

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  #406  
Old 16th April 2021
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Quote:
Originally Posted by wedge View Post
One of my neighbors a few shops down from mine used to weld a lot of gas tanks, and he filled them with gasoline. According to him, as long as there is no air in the tank, it will not explode. He welded a hole in the bottom of my tank on my shop truck with the tank fully loaded and I stood right there while he did it. It did not explode.
Yeah.....don't think I'll try that.
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  #407  
Old 16th April 2021
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Quote:
Originally Posted by Steve9 View Post
Damn that sounds scary!

Like holding a high-power line if you are not grounded......no thanks
?? but it's the path to ground that completes the circuit.birds can sit on a high voltage line without being fried because they're not touching ground.
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  #408  
Old 16th April 2021
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Quote:
Originally Posted by BestCoastXL View Post
Yeah.....don't think I'll try that.
Ya know, I don't think I would either, but this guy is a professional welder and he does a lot of exactly that. I stood there as he rolled under my truck and welded it up. Can't say I wasn't expecting a quick ride to the hospital, but it was just fine, and the tank hole was fixed. One thing I don't remember though, and it's probably important, is weather the cap was on the tank or not. I topped it off right to the filler with a can so there could be no air in the tank.
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  #409  
Old 17th April 2021
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He also said, NEVER weld on an empty tank, or even a tank filled with water. He said you can never get the tank clean enough to trust it. It seems he was going on a lot of experience and knowledge of the subject.
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  #410  
Old 17th April 2021
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Quote:
Originally Posted by wedge View Post
He also said, NEVER weld on an empty tank, or even a tank filled with water. He said you can never get the tank clean enough to trust it. It seems he was going on a lot of experience and knowledge of the subject.
I've heard of people killed welding on top of old 55 gallon drums.

John
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