How common is it to burn a cat? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Stomachbuzz · 01-02-2020, 09:05 PM

Quote:

Originally Posted by NoHaveMSG

Pre-cat and post-cat measurement. But without a baseline on what a normal cat is, it isn't going to tell you much except what yours is currently reading.

If the exhaust is hotter post cat, then it's working.

vladniko86 · 01-02-2020, 09:09 PM

Quote:

Originally Posted by Stomachbuzz

If the exhaust is hotter post cat, then it's working.

Did you take a look at the photos?

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Stomachbuzz · 01-02-2020, 09:12 PM

Quote:

Originally Posted by vladniko86

Did you take a look at the photos?

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I did. And I have no idea what's going on or what they are supposed to show

vladniko86 · 01-02-2020, 09:13 PM

Quote:

Originally Posted by Stomachbuzz

I did. And I have no idea what's going on or what they are supposed to show

Yeah I should’ve written down what I measured.

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Stomachbuzz · 01-02-2020, 09:17 PM

Quote:

Originally Posted by vladniko86

Yeah I should’ve written down what I measured.

Aye.

I also don't think you need me to interpret anything.

It's a pretty simple litmus test: if thermometer reports temps above ~350F, you're probably good.

If cannot get thermometer to report 350F, then further investigation is required.
You might not be able to get a good reading from the top of the engine bay due to line of sight being blocked by the heat shielding. Not sure. You might have to jack the car up or put it on a lift while still hot.

Also, might be a good idea to do the same test on another vehicle for a baseline, as mentioned before. Just so you get an idea of how it works

vladniko86 · 01-02-2020, 09:18 PM

Quote:

Originally Posted by Stomachbuzz

Aye.

I also don't think you need me to interpret anything.

It's a pretty simple litmus test: if thermometer reports temps above ~350F, you're probably good.

If cannot get thermometer to report 350F, then further investigation is required.

You might not be able to get a good reading from the top of the engine bay due to line of sight being blocked by the heat shielding. Not sure. You might have to jack the car up or put it on a lift while still hot.

Also, might be a good idea to do the same test on another vehicle for a baseline, as mentioned before. Just so you get an idea of how it works

That’s exactly what I’ll do! Thanks

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Captain Snooze · 01-03-2020, 12:06 AM

I hate cats. They eat native wildlife so if you want to burn a cat go right ahead but I have no idea how common the practice is.

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86MLR · 01-03-2020, 12:16 AM

I think that cat is waiting for the bus to the cat farm.

Lantanafrs2 · 01-03-2020, 02:03 AM

A little late with that water. I think the cat would rather have been punched out than burned up. I wonder if "catless" headers offend him

NoHaveMSG · 01-03-2020, 11:17 AM

Quote:

Originally Posted by vladniko86

So I went around the block and got the car to operating temps.

https://share.icloud.com/photos/09Yy...NUq0t-11kA5x9Q

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Those optical temp guns read in a cone. At that distance you are not picking up anything of use. You need to pull the lower pan off and check it from up close, maybe within 6 in max.

ls1ac · 01-03-2020, 06:15 PM

Once again late to the party, if it is a bad cat then it is covered by fed replacement requirement law.
(May not be required if extensive exhaust modifications have been done)

vladniko86 · 01-03-2020, 06:16 PM

Quote:

Originally Posted by ls1ac

Once again late to the party, if it is a bad cat then it is covered by fed replacement requirement law.
(May not be required if extensive exhaust modifications have been done)

Interesting. Any warranty I have is voided so I doubt it. Also this all happened post recall

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NoHaveMSG · 01-03-2020, 06:30 PM

Quote:

Originally Posted by vladniko86

Interesting. Any warranty I have is voided so I doubt it. Also this all happened post recall

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EPA requirement is 8 years or 80K miles. All emission control devices have mandated federal warranties.

I write the emission control warranty statement for the equipment we build here at my work.

vladniko86 · 01-03-2020, 06:31 PM

Quote:

Originally Posted by NoHaveMSG

EPA requirement is 8 years or 80K miles. All emission control devices have mandated federal warranties.

Even salvage branded?

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01-03-2020, 12:06 AM	#21
Captain Snooze Because compromise ® Join Date: Jan 2012 Drives: Red Herring Location: australia Posts: 7,723 Thanks: 3,993 Thanked 9,346 Times in 4,127 Posts Mentioned: 60 Post(s) Tagged: 0 Thread(s)	I hate cats. They eat native wildlife so if you want to burn a cat go right ahead but I have no idea how common the practice is. __________________ My car is completely stock except for all the mods.

01-03-2020, 12:16 AM	#22
86MLR Senior Member Join Date: Aug 2018 Drives: 2002 VX Commodore SS LS1 Auto Location: Sydney Posts: 2,203 Thanks: 500 Thanked 2,185 Times in 1,111 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	I think that cat is waiting for the bus to the cat farm. __________________ Disclaimer: This post represents the official views of the voices in my head at the time of posting. http://www.ft86club.com/forums/showthread.php?t=133311 I'm only here for the biscuits

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