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Red hot glowing cat. 

 

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 Post subject: Red hot glowing cat.
Posted: Fri Jan 30, 2009 9:04 am 
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After a spirited drive last nite I got home and for some reason I lookedunder my car and saw that the cat was glowing red hot. Now I'm not sure if this is normal or not but I'm a little concerned the cat is supposed to be a hi flow(not sure of the brand) and it's only 6 months old. Does anybody know what may cause this??

I'm running extractors and a 2.5" mandrel system with 1 muffler and a resi at the back.

 

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 Post subject: Re: Red hot glowing cat.
Posted: Fri Jan 30, 2009 9:40 am 
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ive had my extractrors glowing red hot and that was just cruising!.. something was worng wit the timing and was craeting havoc with the air fuel ratio's creating a super hot exhaust temp...

 

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 Post subject: Re: Red hot glowing cat.
Posted: Fri Jan 30, 2009 10:22 am 
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Blocked cat, timing is retarded or lean air fuel ratio.
Did you happen to look at the extractors?

 

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 Post subject: Re: Red hot glowing cat.
Posted: Fri Jan 30, 2009 11:06 am 
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Extractors were fine. It seems to be running rich if anything but I think the cat may be blocked, it's making a donging noise on the inside. Time to give it a little bash out me thinks.

 

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 Post subject: Re: Red hot glowing cat.
Posted: Fri Jan 30, 2009 11:22 am 
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Well put it this way, if you had the factory cat still in it wouldn't have glowed red, it would have just melted internally. :P

That's what happened to mine.

As far as I know the High flow cats are built to be able to transfer more heat to the outside and avoid the internals melting into one clump.

 

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 Post subject: Re: Red hot glowing cat.
Posted: Fri Jan 30, 2009 11:28 am 
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Overly rich can cause a cat to get extra hot.

 

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 Post subject: Re: Red hot glowing cat.
Posted: Fri Jan 30, 2009 7:50 pm 
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No more blocked cat hehe :D

 

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 Post subject: Re: Red hot glowing cat.
Posted: Fri Jan 30, 2009 8:37 pm 
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its bad to punch a cat out. RSPCA does not like that.

But gutting is fun, if not messy.

So you burnt a 6 month old cat. hollow cats sound aweful, just get it tubed, actually get it replaced its a MONSTER fine for no cat, same fine as having a screamer pipe.

 

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 Post subject: Re: Red hot glowing cat.
Posted: Fri Jan 30, 2009 9:32 pm 
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Yeah to much fuel I think. Doesn't sound any different but.

 

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 Post subject: Re: Red hot glowing cat.
Posted: Sat Jan 02, 2010 4:58 am 
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ebxr82nv wrote:
Yeah to much fuel I think. Doesn't sound any different but.



any power gain difference between when the cat was new and when it was gutted?????????

After some heavy driving my 2.5in magnaflow 200cpi cat, makes a ticking sound for a few minutes after the car is turned off. Probably the outer heat shield casing expanding???

 

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 Post subject: Re: Red hot glowing cat.
Posted: Sat Jan 02, 2010 8:23 pm 
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cats are meant to operate at upwards of 700°C

So some glowing will be normal.

In the dark 400°C will cause a slight glow. (700°C will be visibly red in daylight)

 

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 Post subject: Re: Red hot glowing cat.
Posted: Sun Jan 03, 2010 12:45 am 
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its blocked, bad

put zoommy pipes on it, that'll fix it. actually do it

 

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 Post subject: Re: Red hot glowing cat.
Posted: Sun Jan 03, 2010 12:55 am 
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dc_todd wrote:
its bad to punch a cat out. RSPCA does not like that.


Heh, Its EPA!

 

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 Post subject: Re: Red hot glowing cat.
Posted: Sun Jan 03, 2010 1:06 am 
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Krytox wrote:
dc_todd wrote:
its bad to punch a cat out. RSPCA does not like that.


Heh, Its EPA!


See that way over there, it's the joke you missed.

 

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 Post subject: Re: Red hot glowing cat.
Posted: Sun Jan 03, 2010 1:18 am 
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Krytox wrote:
dc_todd wrote:
its bad to punch a cat out. RSPCA does not like that.


Heh, Its EPA!


I got the joke lol

 

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