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  #1  
Old 08-07-2008, 12:09 AM
SideSwipe226 SideSwipe226 is offline
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Default modding stock valve/valve stem

i wanted to buy a new valve for my spyder, but then i remembered i was broke. so i was wondering if there was any modding i can do to a stock valve/valve stem to let more air into my marker. is there?
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Old 08-07-2008, 06:47 AM
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Default Re: modding stock valve/valve stem

You can flatten the other side of it, just like the already flattened side. If you have a lathe, you can cut a little off the back part of the pin near the cup seal. However, both of this will severly weaken the pin.

You can also just polish it.
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Old 08-07-2008, 01:29 PM
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Default Re: modding stock valve/valve stem

You can drill out the top hole, but personally, I'd just wait until you have a couple bucks, 32 degrees Magnaport valves go for cheap on eBay, that might be an idea.
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Old 08-07-2008, 07:05 PM
SideSwipe226 SideSwipe226 is offline
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Default Re: modding stock valve/valve stem

i got a magnaport valve. i doesnt really work. it just leaks.
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Old 08-07-2008, 07:10 PM
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Default Re: modding stock valve/valve stem

doing both of those things, like flattening out one side of the stem and drilling out the top of the valve, will it give the valve a higher flow?
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Old 08-07-2008, 07:47 PM
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Arrow Re: modding stock valve/valve stem

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Originally Posted by SideSwipe226 View Post
i got a magnaport valve. i doesnt really work. it just leaks.
I suspect it's leaking because you're either using the brass cup seal that came with it or not using a Lapco type cup seal. Is this just the valve body or the whole assembly? -

If it leaks it can be fixed. You just have to know what to do -
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Old 08-07-2008, 08:24 PM
SideSwipe226 SideSwipe226 is offline
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Default Re: modding stock valve/valve stem

well, i purchased it here on the soc forums. the person eho gave it to me didnt give me a brass cup seal. he gave me a delrin cup seal. and the valve stem looked like a stock one.
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Old 08-07-2008, 08:44 PM
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Default Re: modding stock valve/valve stem

Quote:
Originally Posted by SideSwipe226 View Post
doing both of those things, like flattening out one side of the stem and drilling out the top of the valve, will it give the valve a higher flow?
Along with drilling out the hole on top, yeah, it should give it a little more flow. But, like I said, it'll weaken the pin quite a bit.

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Originally Posted by DRAGON View Post
I suspect it's leaking because you're either using the brass cup seal that came with it or not using a Lapco type cup seal. Is this just the valve body or the whole assembly? -

If it leaks it can be fixed. You just have to know what to do -
Sometimes the delrin seal needs to be "helped" along. What I used to do is push the cup seal into the valve and sort of make a groove where it seals. Also, the leak - is it leaking down the barrel, or the grip? Could it be a seal AROUND the valve, or within it? I'd suggest doing that thing with the cup seal I mentioned, and changing the orings on the valve itself.
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Old 08-07-2008, 09:03 PM
SideSwipe226 SideSwipe226 is offline
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Default Re: modding stock valve/valve stem

when you say weaken, what do you mean? does it become bendable or could it possibly snap in two? and it leaks out the barrel.
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Old 08-07-2008, 10:02 PM
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Default Re: modding stock valve/valve stem

I'm not saying it'll snap or bend, but it possibly could. Remember, you'll have a heavier piece of hardened steel slamming on it at high rates. However, the part it hits is relatively small and it is guided with the valve as a "sleeve: for it, so it's just a theory actually...

If it leaks out the barrel, I'd say it's the cup seal. Either do what I said above, or get a new one.
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