Valve caps? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

86Boyz · 11-02-2016, 05:35 PM

Hello, I lost some of my valve caps and i'm worried some air seeped out. They had the N2 letters on it so will it be bad if I put regular air in? Can you mix the two?

Leonardo · 11-02-2016, 06:49 PM

Quote:

Originally Posted by 86Boyz

Hello, I lost some of my valve caps and i'm worried some air seeped out. They had the N2 letters on it so will it be bad if I put regular air in? Can you mix the two?

The cap does not hold air in, it keeps dirt out. Any auto parts store will have some...

Air can be added to Nitrogen, No problems. The decrease in temp fluctuation/pressure: I dare anyone to quantify. Air is 78% nitrogen.

go_a_way1 · 11-02-2016, 06:51 PM

Quote:

Originally Posted by Leonardo

The cap does not hold air in, it keeps dirt out. Any auto parts store will have some...

Air can be added to Nitrogen, No problems. The decrease in temp fluctuation/pressure: I dare anyone to quantify. Air is 78% nitrogen.

Correct, however moisture is the biggest cause of fluctuation in pressures due to temperature, and that's gonna be the real issue here

Leonardo · 11-02-2016, 07:01 PM

Quote:

Originally Posted by go_a_way1

Correct, however moisture is the biggest cause of fluctuation in pressures due to temperature, and that's gonna be the real issue here

I paint, and my air compressor has a water trap. No issue.

go_a_way1 · 11-02-2016, 07:03 PM

Quote:

Originally Posted by Leonardo

I paint, and my air compressor has a water trap. No issue.

I really hope the OP places precautions in place like you or he may total his car

Leonardo · 11-02-2016, 07:06 PM

Quote:

Originally Posted by go_a_way1

I really hope the OP places precautions in place like you or he may total his car

Well, IDK about the OP, but I check my tire pressure. Wait.... I sense some sarcasm... Total his car for adding a few psi of "wet" air. LOL Good one!

go_a_way1 · 11-02-2016, 07:12 PM

Quote:

Originally Posted by Leonardo

Well, IDK about the OP, but I check my tire pressure. Wait.... I sense some sarcasm... Total his car for adding a few psi of "wet" air. LOL Good one!

Leonardo · 11-02-2016, 07:16 PM

Go a way1 is correct. Though the difference is hard to quantify if you are just adding some air to the nitrogen in your tire. Additionally, the air is pretty "dry" in Socal compared to Oregon or Canada...

Anyway, here is a link that explains temp change relative to tire pressure.

http://www.tirerack.com/winter/tech/....jsp?techid=73

Ultramaroon · 11-02-2016, 10:39 PM

Quote:

Originally Posted by go_a_way1

Correct, however moisture is the biggest cause of fluctuation in pressures due to temperature, and that's gonna be the real issue here

Quote:

Originally Posted by Leonardo

I paint, and my air compressor has a water trap. No issue.

Thread needs a shitpost trap.

guybo · 11-02-2016, 10:50 PM

Nitrogen is a scam to get people to pay $20 to inflate their tires. Unless you are doing 200 MPH at the track, it is not worth the money. Nitrogen can be freely mixed with air.

Replace the valve stem caps, they protect the Schrader valve and threads.

Air does not leak past the valve. The colder weather this time of year causes the decrease in air pressure in the tires. It's no big deal, completely normal AS LONG is it is only 2-3 psi. If you have one tire that has more pressure loss than the others, check it out for a puncture.

Leonardo · 11-02-2016, 11:19 PM

Quote:

Originally Posted by Ultramaroon

Thread needs a shitpost trap.

via Imgflip Meme Generator

Ultramaroon · 11-02-2016, 11:25 PM

Quote:

Originally Posted by guybo

Nitrogen is a scam to get people to pay $20 to inflate their tires. Unless you are doing 200 MPH at the track, it is not worth the money. Nitrogen can be freely mixed with air.

Replace the valve stem caps, they protect the Schrader valve and threads.

Air does not leak past the valve. The colder weather this time of year causes the decrease in air pressure in the tires. It's no big deal, completely normal AS LONG is it is only 2-3 psi. If you have one tire that has more pressure loss than the others, check it out for a puncture.

What if one tire is a whole lot colder? The other 3 might be out of alignment.

Mr.ac · 11-03-2016, 03:20 AM

Oh how I love this new car generation.
Non stop entertainment.

guybo · 11-03-2016, 07:00 AM

Quote:

Originally Posted by Ultramaroon

What if one tire is a whole lot colder? The other 3 might be out of alignment.

dafuq?

11-02-2016, 05:35 PM	#1
86Boyz Senior Member Join Date: Oct 2016 Drives: on the highway to hell Location: SoCal Posts: 307 Thanks: 60 Thanked 177 Times in 98 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Valve caps? Hello, I lost some of my valve caps and i'm worried some air seeped out. They had the N2 letters on it so will it be bad if I put regular air in? Can you mix the two? Last edited by 86Boyz; 11-02-2016 at 06:31 PM.

11-03-2016, 03:20 AM	#13
Mr.ac [insert cool phrase here] Join Date: Aug 2015 Drives: BRZ Premium Location: Central Coast CA Posts: 2,368 Thanks: 709 Thanked 1,559 Times in 930 Posts Mentioned: 30 Post(s) Tagged: 0 Thread(s)	Oh how I love this new car generation. Non stop entertainment. __________________ New daily driver - Subaru BRZ Premium Weekend fun/track car - '91 MR2 Turbo Gen3 Old daily driver - '88 MR2 Supercharged

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11-02-2016, 07:16 PM	#8
Leonardo Country Boy 4 Life Join Date: Jul 2012 Drives: 19' & 06' Ridgelines, 13' FR-S Location: EUGENE Posts: 5,228 Thanks: 6,719 Thanked 5,293 Times in 2,720 Posts Mentioned: 47 Post(s) Tagged: 1 Thread(s)	Go a way1 is correct. Though the difference is hard to quantify if you are just adding some air to the nitrogen in your tire. Additionally, the air is pretty "dry" in Socal compared to Oregon or Canada... Anyway, here is a link that explains temp change relative to tire pressure. http://www.tirerack.com/winter/tech/....jsp?techid=73

11-02-2016, 10:50 PM	#10
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	Nitrogen is a scam to get people to pay $20 to inflate their tires. Unless you are doing 200 MPH at the track, it is not worth the money. Nitrogen can be freely mixed with air. Replace the valve stem caps, they protect the Schrader valve and threads. Air does not leak past the valve. The colder weather this time of year causes the decrease in air pressure in the tires. It's no big deal, completely normal AS LONG is it is only 2-3 psi. If you have one tire that has more pressure loss than the others, check it out for a puncture.

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