modding stock valve/valve stem

[SideSwipe226]

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?

[vikingshadow]

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.

[battlechaser]

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.

[SideSwipe226]

i got a magnaport valve. i doesnt really work. it just leaks.

[SideSwipe226]

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?

[DRAGON]

Originally Posted by SideSwipe226

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 -

[SideSwipe226]

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.

[vikingshadow]

Originally Posted by SideSwipe226

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.

Originally Posted by DRAGON

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.

[SideSwipe226]

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.

[vikingshadow]

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.