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Author Topic: petcock questions  (Read 862 times)

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petcock questions
« on: April 16, 2014, 05:50:10 pm »
So I got the new 2 qt fuel tank mounting mocked up the problem is im not gonna be able to use the stock petcock the tank is made to use a 1/8 inch petcock but i dont think its gonna flow enough. Im wondering what some thoughts are I thought about just using a barbed fitting and perhaps a inline shut-off any idea's???? On a bright note I lost over 3 lbs and lost thats massive stock fuel tank with a nice little clean one.
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Halls Precision Racing

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Re: petcock questions
« Reply #1 on: April 17, 2014, 01:43:25 pm »
49 views and not 1 suggestion wtf! I think im gonna tap the tank for a barbed fitting and using one of these in the middle of the line. Hopefully I have enuff flow. Thoughts???
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#820
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Re: petcock questions
« Reply #2 on: April 17, 2014, 02:15:54 pm »
i was at the hard ware store the other day they had the first 1 u listed and it turns easy and is really light weight
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Re: petcock questions
« Reply #3 on: April 17, 2014, 02:54:42 pm »
My thing is the flow rate. You think it will flow enough. I was thinking they are cheap maybe I could try to drill one out as big as I can get it.
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Re: petcock questions
« Reply #4 on: April 17, 2014, 02:58:39 pm »
The 1/4" ones flow about enough as a mower needs. The internal size of them is the problem. They are 1/4" OD but don't flow as much as 1/4" ID would. If that makes sense?

You'd be best off finding a Pingle or something to mount to your tank
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Re: petcock questions
« Reply #5 on: April 17, 2014, 04:23:49 pm »
Read about the mod you do to the petcock, grinding the flow route so that both reserve and on fuel paths work at the same time. But it's still the same id inside the petcock.
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Re: petcock questions
« Reply #6 on: April 17, 2014, 06:27:42 pm »
Yes please read origional post I know all about the petcock mod. Maybe ill put in a 1/4 I.d. barbed fitting and just forget about a shut-off. Ill just pinch fuel line or drain tank at the end of the night.
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Re: petcock questions
« Reply #7 on: April 17, 2014, 06:51:57 pm »
Im looking for the same thing
on my next build im thinking about moding the backbone to hold extra fuel 
87 lt500r hybrid custom intake with 48 lectron, v2 reeds, scr dune port,4'' over swinger
87 lt250 mild porting, shear pipe,v3 reeds,4''swinger
91 lt250r stocker , fmf
83 RM500 build in progress
85 465rm hybrid dune port, v3 reeds,hand con pipe ,vm 46mm carb 4'' swinger ,in progresss

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Re: petcock questions
« Reply #8 on: April 17, 2014, 07:42:44 pm »
Get an IV seal off thing. It has a channel that's like a ramp with a roller thing that as you push it up it pinches off the fluid flow. Idk if they make them that big though
1976 Yamaha TT500
1979 Yamaha TT500
1980 Yamaha TT500
1985 Yamaha YTZ250
1985 Yamaha YTZ250
1985 Honda ATC350X
1985.5 Yamaha YTZ250
1987 Suzuki LT265R
1988 Suzuki LT250R
2002 Honda CR85RB
2005 Honda TRX450R
2007 Honda TRX450ER

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Re: petcock questions
« Reply #9 on: April 19, 2014, 06:48:08 am »
search 1/8 npt valve
there alot of differnt 1s to chooce from
http://www.amazon.com/PneumaticPlus-MFTH-12-Brass-Valve-Female/dp/B008EP4CHA
87 lt500r hybrid custom intake with 48 lectron, v2 reeds, scr dune port,4'' over swinger
87 lt250 mild porting, shear pipe,v3 reeds,4''swinger
91 lt250r stocker , fmf
83 RM500 build in progress
85 465rm hybrid dune port, v3 reeds,hand con pipe ,vm 46mm carb 4'' swinger ,in progresss

 

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