C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Valve Stem Broken

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Old Jul 1, 2017 | 05:48 PM
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Default Valve Stem Broken

I just discovered some *** Hole broke the valve stem loose on my right rear.

I drove to the grocery store yesterday afternoon, came straight home and parked in my locked garage. I went out a bit ago to go for a drive...backed out of the garage and noticed the right rear tire was flat. Thinking I may have picked up a nail...I hooked my compressor to it and started filling the tire. As it got to about 25 psi I heard the air rushing out and saw the cut in the stem.

Had to be on purpose...GD *** hole vandals. So tomorrow I have to jack it up, take the right rear off and to a tire shop!!

Last edited by sprink94; Jul 1, 2017 at 07:52 PM.
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Old Jul 1, 2017 | 06:00 PM
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Karmas a b!tch.
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Old Jul 1, 2017 | 06:07 PM
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I guess you can consider yourself lucky. The hole could have just as easily slashed your tire.
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Old Jul 1, 2017 | 06:58 PM
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Are you sure it is not old and cracked from drying out when you put pressure on it to fill.
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Old Jul 1, 2017 | 07:52 PM
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Originally Posted by A Peter C4
Are you sure it is not old and cracked from drying out when you put pressure on it to fill.
It's not old...tires, rims and stems were all new 6 months ago.
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Old Jul 1, 2017 | 07:54 PM
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Originally Posted by 383vett
I guess you can consider yourself lucky. The hole could have just as easily slashed your tire.
Yeah...I thought about that.... If I had the time I would have new TPM's installed but on a holiday weekend Sunday...probably not.

Last edited by sprink94; Jul 1, 2017 at 07:55 PM.
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Old Jul 1, 2017 | 07:57 PM
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Originally Posted by armybyrd
Karmas a b!tch.
Now that you mention it...hmmmm..LOL
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Old Jul 1, 2017 | 08:01 PM
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feel your pain man
2 trucks 1 car totaled by the same a hole neighbor in 1 yr (vandalism)
I cant help but wonder if these people think "what if they catch me" guessing noone has before.

hang in there man be glad it wasnt worse.

Last edited by cv67; Jul 1, 2017 at 08:01 PM.
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Old Jul 1, 2017 | 08:39 PM
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Originally Posted by sprink94
I just discovered some *** Hole broke the valve stem loose on my right rear.

I drove to the grocery store yesterday afternoon, came straight home and parked in my locked garage. I went out a bit ago to go for a drive...backed out of the garage and noticed the right rear tire was flat. Thinking I may have picked up a nail...I hooked my compressor to it and started filling the tire. As it got to about 25 psi I heard the air rushing out and saw the cut in the stem.

Had to be on purpose...GD *** hole vandals. So tomorrow I have to jack it up, take the right rear off and to a tire shop!!
Anyone ever used one of these rigs ?

Seems like it might solve my issue quickly!
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Old Jul 2, 2017 | 11:37 AM
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Had it repaired...$32 with ballance.
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Old Jul 2, 2017 | 11:46 AM
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Default Valve stem issues

I had a strange thing happen one day, I was driving along a barrier wall and I kept hearing a Hiss-hiss-hiss-hiss. I stopped my car at the next pull-off and found that my right rear tire's valve stem had broken near the base and as the tire would rotate it would leak out pressure. My tire still had sufficient pressure but I went straight home and fixed it.
The reason for my valve stem failure was that the nincompoop who put my tires on probably did not have any more short stems and instead installed the longer ones. With Metal Valve Stem caps mounted on the stems the weight alone was enough to start the process. As I drove my stems were swinging around enough to break the valve stem near the base. Doing burnouts probably didn't help any either.
It is very important to have the right length of the stem itself. My stems were sticking out of the rim between 2-3". It was just a matter of time before they would fail.
Now I try to use short steel valve stems on my performance vehicles. The steel stems last a long time and can't be cut easily. They make them straight and 45 degree angle Valve stems. I use the 45's on my motorcycle as it is so much easier to add air that way with tubeless aluminum wheels.

Karma is a B!tch!! I painted a car years ago and two weeks afterwards the car was keyed down the entire side destroying all of my work. About a month later the culprit parked his little Lotus on the top of his very steep driveway and went down to open the garage door.
Suddenly something made the Lotus start rolling down the driveway with it's drivers door open. As we watched the little Lotus snapped the drivers door right off the body, The owner literally started crying at the scene of his favorite car and its door laying on the ground.
Karma, you have to love it!

I hope the person who would cut your stem gets his in the long run.

Good Luck and stick with short stems, they are harder to break.
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Old Jul 2, 2017 | 12:24 PM
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Originally Posted by sprink94
Had it repaired...$32 with ballance.
Why the balance?

They should be able to change it out by only breaking the bead on the front side and replacing the valve. With no rotation of the tire on the wheel balancing shouldn't be needed.
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Old Jul 5, 2017 | 09:09 AM
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Originally Posted by sprink94
Anyone ever used one of these rigs ? https://www.youtube.com/watch?v=TgDzZIop_uw

Seems like it might solve my issue quickly!
Thanks Spink94. Didn't know that was available
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Old Jul 5, 2017 | 10:50 PM
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Originally Posted by sprink94
It's not old...tires, rims and stems were all new 6 months ago.
Your car originally had metal valve stems
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