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Old 08-12-2011   #1
EvilTwin
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Tire valve stem swap

Hey guys, as the title says, how do I go about changing the valve stem on a tubeless rim?

Thx
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Old 08-12-2011   #2
witttom
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Re: Tire valve stem swap

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Originally Posted by EvilTwin View Post
Hey guys, as the title says, how do I go about changing the valve stem on a tubeless rim?
It kinda depends on the valve stem, but most of the metal stems have a nut that tightens them down from either the top or the bottom.
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Old 08-12-2011   #3
Dave Bannister
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Re: Tire valve stem swap

Remove tire off rim then push old stem inwards.. The install new stem from inside out.. use some lube its mucho easier..
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Old 08-12-2011   #4
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Re: Tire valve stem swap

Oh... not all stems are the same diameter either.
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Old 08-14-2011   #5
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Re: Tire valve stem swap

The metal ones "bolt" on. They have a tendency to leak with age as the rubber washers get hard and cracked.

The rubber ones pull through. Usually its easiest to cut the old one off from the inside. The tire guys have a tool that gives more leverage to pull the new one in. It can be done by hand with some "lube" which can be anything from spit to my fave spray cooking oil. (doesnt contain water to corrode things later!)

-SP
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Old 08-14-2011   #6
serpentracer
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Re: Tire valve stem swap

best tire lube ever is some dish detergent and water.
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Old 08-14-2011   #7
Ron Bernert
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Re: Tire valve stem swap

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Originally Posted by serpentracer View Post
best tire lube ever is some dish detergent and water.
Be very careful with this combo, you really don't want to introduce too much moisture into the tire. It causes a number of problems. Best bet is to buy a tub of tire mounting paste, and one tub should last you years and years..
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Old 08-14-2011   #8
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Re: Tire valve stem swap

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Originally Posted by Ron Bernert View Post
Be very careful with this combo, you really don't want to introduce too much moisture into the tire. It causes a number of problems. Best bet is to buy a tub of tire mounting paste, and one tub should last you years and years..
every tire shop you go to pretty much uses it. I've been using it to mount my tires for many years. it's never wet inside when I change them out (2 sets a summer usually).
besides the tire lube they sell at car quest is like water too.
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Old 08-14-2011   #9
lagerhead
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Re: Tire valve stem swap

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Originally Posted by Motorsports Photo View Post

The tire guys have a tool that gives more leverage to pull the new one in.

-SP
I've used that tool and it works awesome, but I can't justify buying one.

What I've done many times with the rubber ones is I'll put an oversize decorative valve stem cap on the stem and then with a properly sized piece of wood as a fulcrum, use an open end wrench to pry (lift) the stem into place.

Also +1 on the cooking spray / tire lube recommendation. I've messed up several wheels with the dish soap and water trick, both steel and aluminum.

I use this stuff, it's almost too slippery.



http://www.nomar-secure.com/product_p/sp-lube-paste.htm
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Old 08-15-2011   #10
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Re: Tire valve stem swap

how are you guys messing up a wheel with dish soap?
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Old 08-15-2011   #11
Ron Bernert
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Re: Tire valve stem swap

Tires are a petroleum product. Dish soap eats petroleum products. Dish soap slowly eats at the aluminum in the wheel. If you carefully clean the wheel every time you mount a tire, and you wear out the tires quickly, it prolongs the process. For a very little amount of money you can have an actual product that is designed for tire mounting. Don't even get me started on how bad dish soap attacks old BMW aluminum wheel and steel spokes!
Tire mounting compounds are chemically inert and don't harm even the softest aluminum.
Try the No-Mar stuff. You'll like it and never use dish soap again. I use Wurth tire paste, which is some really good snot.
Moisture introduced into the tire while using dish soap and water can also make your tire pressures harder to tame. You don't actually "see" the water. It's the humidity inside the tire that does it.
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Old 08-15-2011   #12
Dave Bannister
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Re: Tire valve stem swap

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Originally Posted by serpentracer View Post
how are you guys messing up a wheel with dish soap?

I've seen oxidation with spoke rims( some must of been steel seeing rust ) but not aluminum mags on most sport bikes.
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Old 08-15-2011   #13
Dave Bannister
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Re: Tire valve stem swap

Quote:
Originally Posted by lagerhead View Post
I've used that tool and it works awesome, but I can't justify buying one.

What I've done many times with the rubber ones is I'll put an oversize decorative valve stem cap on the stem and then with a properly sized piece of wood as a fulcrum, use an open end wrench to pry (lift) the stem into place.

Also +1 on the cooking spray / tire lube recommendation. I've messed up several wheels with the dish soap and water trick, both steel and aluminum.

I use this stuff, it's almost too slippery.



http://www.nomar-secure.com/product_p/sp-lube-paste.htm
Isn't this stuff like murphy's oil soap but in paste form?
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Old 08-15-2011   #14
Benny
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Re: Tire valve stem swap

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Originally Posted by serpentracer View Post
every tire shop you go to pretty much uses it.
I've been mounting motorcycle tires for 40 years at my own shops and for others and never have I seen a shop use dish soap and water.
I use a vegetable base tire lube. Some guys like WD40 because it's easy to apply. Water and dish soap will screw up a non painted wheel big time.
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Old 08-15-2011   #15
lagerhead
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Re: Tire valve stem swap

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Originally Posted by Dave Bannister View Post
Isn't this stuff like murphy's oil soap but in paste form?
Don't know, not familiar with Murphy's. It says it's vegetable based and kind of smells like the rendering tank behind a chicken joint. Mmmmm chicken...
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