High exhaust temp

Killerbracing · 09-10-2014, 12:21 PM

My exhaust temp is reading well over 250 degrees. It has header paint on it. Any ideas to cool it down? Thanks

Dave_D · 09-10-2014, 12:54 PM

I think your ok.
http://www.answers.com/Q/How_hot_doe...le_exhaust_get
Others feel free to correct me

Dave

Weldangrind · 09-11-2014, 12:58 AM

I would agree. I think it's paramount to keep an eye on the plug.

Killerbracing · 09-18-2014, 12:00 PM

Here is my plug.

Weldangrind · 09-18-2014, 11:54 PM

It looks healthy enough; maybe even a tad on the rich side. What matters is what the engine was doing when you cut power. Was it idling, or did you do a plug chop?

Wild_Alaskan · 09-19-2014, 01:15 PM

I wouldn't worry too much about your exhaust temps, most motocross bikes will glow the beginning of the header when idling in place for a while

2LZ · 09-19-2014, 01:31 PM

....and cats don't help the heat if you have one in your pipe. They're made to cook. That's the one bad thing about removing the air injector tube without removing your cat along with it. The cat doesn't get as hot without a shot of fresh air when needed under full throttle or heavy load conditions, so it starts to collect gunk after a while.

On the flip-side of that, if you cut out the cat and leave the air injector tube, be ready to replace your muffler packing far sooner than normal because you're tossing a shot of fresh air on your packing instead of the cat, under heavy load conditions. Picture a blow dryer on a charcoal briquet.

The coolest possible exhaust is one with both removed and the port blocked, with a free breathing muffler.

Weldangrind · 09-19-2014, 06:24 PM

Also, if you remove the cat and not the air injector tube, expect a big BANG on deceleration. Great fun!

Killerbracing · 09-21-2014, 10:23 PM

She is as simple as it'll go. K&N air filter , hollowed out cat. She got a new plug. We'll see what this one looks like.

09-10-2014, 12:21 PM	#1
Killerbracing Join Date: Feb 2014 Location: Buffalo, Mo Posts: 259	High exhaust temp My exhaust temp is reading well over 250 degrees. It has header paint on it. Any ideas to cool it down? Thanks
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09-11-2014, 12:58 AM	#3
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	I would agree. I think it's paramount to keep an eye on the plug. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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09-18-2014, 11:54 PM	#5
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	It looks healthy enough; maybe even a tad on the rich side. What matters is what the engine was doing when you cut power. Was it idling, or did you do a plug chop? __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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09-19-2014, 01:15 PM	#6
Wild_Alaskan Join Date: Dec 2009 Location: Alaska Posts: 914	I wouldn't worry too much about your exhaust temps, most motocross bikes will glow the beginning of the header when idling in place for a while __________________ Dune buggy build http://chinariders.net/modules.php?n...wtopic&t=14470 400cc lifan build vid: http://youtu.be/20HoU8OK_Y0 other fun: http://tinyurl.com/wildalaskan
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09-19-2014, 01:31 PM	#7
2LZ Join Date: Mar 2010 Location: Volcano, Ca Posts: 7,081	....and cats don't help the heat if you have one in your pipe. They're made to cook. That's the one bad thing about removing the air injector tube without removing your cat along with it. The cat doesn't get as hot without a shot of fresh air when needed under full throttle or heavy load conditions, so it starts to collect gunk after a while. On the flip-side of that, if you cut out the cat and leave the air injector tube, be ready to replace your muffler packing far sooner than normal because you're tossing a shot of fresh air on your packing instead of the cat, under heavy load conditions. Picture a blow dryer on a charcoal briquet. The coolest possible exhaust is one with both removed and the port blocked, with a free breathing muffler. __________________ "Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350
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09-10-2014, 12:54 PM	#2
Dave_D Join Date: May 2014 Location: Vancouver Island BC Posts: 264	I think your ok. http://www.answers.com/Q/How_hot_doe...le_exhaust_get Others feel free to correct me Dave
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09-19-2014, 06:24 PM	#8
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Also, if you remove the cat and not the air injector tube, expect a big BANG on deceleration. Great fun! __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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09-21-2014, 10:23 PM	#9
Killerbracing Join Date: Feb 2014 Location: Buffalo, Mo Posts: 259	She is as simple as it'll go. K&N air filter , hollowed out cat. She got a new plug. We'll see what this one looks like.
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