New exhaust and valve stems

[NJredfire03]

So I finally got the chance to purchase an axle back. I went with Corsa. I was between Corsa and Bassani. I chose Corsa because their tips are the best ones out there. The sound is great. Highway driving isn't ruined at all. No drone. It's fairly tame just cruising, stomp on it and it sings just right.

Now, valve stems. I bought the car last June. Ever since I've had it my tires were losing air. Dealer I bought it from said they couldn't find a leak, but I should keep the air at 35 and keep the TPMS light off. UMMMMMM WHAT?! No sheit, so can you figure out why I keep losing air so the light doesn't come on? Ugh, they never found a leak. I figured they did their job right and assumed the factory goodyears had little punctures or slices that couldn't be easily found. So I got new tires, reference my post about new tires, and the problem got WORSE. Sprayed the bead, nope, sprayed the stems, bubble party. Talked to my friend. He said the metal stems have a rubber seal and those deals go bad. Well that sucks. Took em out and the rubber seal was alllll corroded. See pic below. He was able to retrofit regular rubber stems on to my TPMS sensors. I can FINALLY put the damn air pump back in the trunk and keep it there. What a PITA!!! Oh I also saw that the car came with an adjustable BMR pan hard. It's not lowered. It could have been. I'll never know.

Sent from my iPhone using Tapatalk

 

[Snoopy49]

You can buy the TPMS metal stems and seals at your Ford dealer or any tire store. I have an adjustable BMR panhard bar and brace on my car and mine isn't lowered, I just wanted to be able to center the rearend.

RockAuto also sells the metal stems.

 

[NJredfire03]

Snoop, I didn't want to go back to metal if they were just going to do this again. I chose to go to rubber


Sent from my iPhone using Tapatalk

 

[Snoopy49]

The rubber stems have a lower speed rating than the metal stems. If you don't plan on going over 155 MPH you shouldn't have any problems.

 

[NJredfire03]

155 sounds good to me. NJ roads are too crappy.


Sent from my iPhone using Tapatalk

 

[MovingZen]

This happened to me at a little over 110 or so and my front left tire went flat immediately. I went back to metal stems on all four asap.

**** rubber stems.

 

[Tob]

How did you ever find the stem?

 

[NJredfire03]

This happened to me at a little over 110 or so and my front left tire went flat immediately. I went back to metal stems on all four asap.

**** rubber stems.

Well damn. Can't say I've ever seen that.


Sent from my iPhone using Tapatalk

 

[Snoopy49]

*Valve Stems are not designed for speeds over 155 mph.

View attachment 71808

 

[MovingZen]

How did you ever find the stem?

I didn't, it's still partially attached in the photo. It was stuck in the position you see it and I had to rip it the rest of the way to break it loose. I started a thread about it asking for recommendations on small and metal tpms sensors.

Well damn. Can't say I've ever seen that.


Sent from my iPhone using Tapatalk

Me either, I was very unhappy sitting on the side of the road waiting on a tow truck. That shit coulda been serious business at the speed I was going.

 

[NJredfire03]

I didn't, it's still partially attached in the photo. It was stuck in the position you see it and I had to rip it the rest of the way to break it loose. I started a thread about it asking for recommendations on small and metal tpms sensors.

Me either, I was very unhappy sitting on the side of the road waiting on a tow truck. That shit coulda been serious business at the speed I was going.

I gotta think that it had to be a faulty stem. I'd hate to put metal stems back on and have leaky tires again in 2 years


Sent from my iPhone using Tapatalk

 

[Snoopy49]

I gotta think that it had to be a faulty stem. I'd hate to put metal stems back on and have leaky tires again in 2 years

I wouldn't worry about having to replace the metal valve stem in 2 years. I have been on this and other GT500 forms since 2012 and yours is the first valve stem corrosion problem I have read about.
Looking at your picture, it looks like the corrosion on the rubber seal was from the rim and not the valve stem.
The factory metal valve stems are stainless steel. Check with a magnet to confirm.

 

[NJredfire03]

I wouldn't worry about having to replace the metal valve stem in 2 years. I have been on this and other GT500 forms since 2012 and yours is the first valve stem corrosion problem I have read about.

Well wtf? That sucks.


Sent from my iPhone using Tapatalk

 

[MovingZen]

I gotta think that it had to be a faulty stem. I'd hate to put metal stems back on and have leaky tires again in 2 years


Sent from my iPhone using Tapatalk

It's possible, or maybe even it was installed incorrectly and damaged, I don't know what caused it to go bad like that. Good luck either way you go!

 

[NJredfire03]

It's possible, or maybe even it was installed incorrectly and damaged, I don't know what caused it to go bad like that. Good luck either way you go!

Thanks man, likewise. I'd hate to see that happen to anyone. I'll heed warnings and won't go that fast.


Sent from my iPhone using Tapatalk

 

[Snoopy49]

Well wtf? That sucks.

I added this to my post.

Looking at your picture, it looks like the corrosion on the rubber seal was from the rim and not the valve stem.
The factory metal valve stems are stainless steel. Check with a magnet to confirm.

 

[NJredfire03]

I added this to my post.

Yes, they are stainless it was checked.


Sent from my iPhone using Tapatalk

 

[Snoopy49]

In that case, I would be worried about the corrosion in the wheel.

 

[NJredfire03]

In that case, I would be worried about the corrosion in the wheel.

Which doesn't make sense. I was with my friend when he swapped out stems. And it looked like there was just residue from the corrosion on the rubber seal. Either way, my friend cleaned up the hole for the stem with some light sand paper. I still have the OEM ones which I will keep as a back up


Sent from my iPhone using Tapatalk