Factory Gas Cap with aftermarket tank?? - Honda Rebel Forum
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post #1 of 14 Old 01-31-2014, 03:01 AM Thread Starter
 
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Factory Gas Cap with aftermarket tank??

Will a factory gas cap work with a 3.4 gallon aftermarket tank?? 2007 honda rebel 250

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post #2 of 14 Old 01-31-2014, 03:07 AM
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Yes it will fit. You will need to know if the tank is vented or not. If it's not vented you'll have to modify the cap to work.




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post #3 of 14 Old 01-31-2014, 03:14 AM Thread Starter
 
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Yes it will fit. You will need to know if the tank is vented or not. If it's not vented you'll have to modify the cap to work.
Yes aftermarket tank is vented I just wanted to make sure my factory cap would work with an aftermarket tank.

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post #4 of 14 Old 04-17-2014, 04:55 PM
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Yes it will fit. You will need to know if the tank is vented or not. If it's not vented you'll have to modify the cap to work.
How do you modify the cap?
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post #5 of 14 Old 04-17-2014, 05:24 PM
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If you have a gas cap from a 96-up Rebel you're wanting to use on an non-vented gas tank you need to drill a small hole in the bottom of the cap to vent it.




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post #6 of 14 Old 04-17-2014, 05:47 PM
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I'm assuming the hole should be in the center of the cap? Underneath the key hole?
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post #7 of 14 Old 04-17-2014, 05:55 PM
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It should be somewhere on the bottom that fits inside the tank. A small hole in the center would be fine, close to where the P is in the photo. Don't drill too deep though, just enough to break through the surface.






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post #8 of 14 Old 08-19-2018, 07:46 PM
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I drilled the hole at the location (near the center aka "P"), but I see in the new hole, what looks like a part of a spring (that moves the 2 cap side lock latches), so maybe it is not venting outside? I stopped drilling when I felt it went thru, and the side lock latches still spring out when I press the gasket ring, and hold in when the key is turned.

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post #9 of 14 Old 08-19-2018, 08:49 PM
 
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Rather than destroy the stock cap, I would just get a vented cap. It would be Chinese, so how much could it cost. Apparently many of these Chinese tanks appear to have a place to put a vent hose, but it was sealed at the factory because the tank was made to use a vented cap.
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post #10 of 14 Old 08-19-2018, 10:35 PM
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Jerry, I hardly think drilling a small hole through the bottom of the cap, where it can't be seen, qualifies as destroying the cap.

Reb, wish you had waited for my reply to your question in the other thread. The lock tumbler is in the center of the cap, right under the "P". If you drill too far there, you can ruin the lock mechanism. Which is why you should always drill the hole off center.

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