Header temp?

[hockeyrick]

Anyone ever stick a thermometer on the header pipe after a ride to see the temps generated? Or the whole system for that matter?

[MrBighouse]

I have an infrared thermometer.. Never tried tho.

[MentalGuru]

It's not the header temp that matters, it is the exhaust gas inside that does...  An EGT sensor reading would be the way to go.

[dkappelm]

So who will be the first to install a pyrometer on the 250L.  I'll leave mine on the truck.  

[hockeyrick]

Just looking for a ballpark figure

[USMCVietVet]

Just looking for a ballpark figure

 

 

HOT!!! ? ?

 

[highmarker]

internally, guess 1250f a few inches away from the head

[MentalGuru]

internally, guess 1250f a few inches away from the head

 

 

In other words don't touch 'cause it's gall darn mother freaking what in the sam hell was I thinking hot!!!!   To put it nicely that is...  ?

[Billi Ji]

...about twice as hot as a 2-stroke.

[hockeyrick]

OK, but no one knows what temp!

[MentalGuru]

OK, but no one knows what temp!

 

 

That all depends on a bunch of things like load, engine temp, speed, rpm, air temp and so on...  Figure between -35 - 1100 degrees on the outside...  The inside temp is what counts.

[Billi Ji]

fwiw, i could show pics of the KTM 990 header pipe glowing red-hot. no kidding.

[gnath9]

I could show you a burn hole in my jeans ....  ?

[hockeyrick]

Im thinking of coating my system, just wanted a ball park figure to know how hot it got to see if the material I have will work or not! I know some guys do weird stuff like take a temp reading, maybe, but yes, I know its hot, i know it burns holes in jeans and all the other backwoods , homily based descriptions!

 

Guess i'll just go buy a thermometer and figure it out, BUT, if anyone does by chance get a reading, someway, somehow, let me know!  Yes, it is lickin' lizard hot!

[MentalGuru]

Im thinking of coating my system, just wanted a ball park figure to know how hot it got to see if the material I have will work or not! I know some guys do weird stuff like take a temp reading, maybe, but yes, I know its hot, i know it burns holes in jeans and all the other backwoods , homily based descriptions!

 

Guess i'll just go buy a thermometer and figure it out, BUT, if anyone does by chance get a reading, someway, somehow, let me know!  Yes, it is lickin' lizard hot!

 

http://www.jet-hot.com/coatings/

[eyeopenher]

i know you cant use it on a header but has anyone ever seen the PRO-CIRCUIT stick on "tape type" thermometer??? its like what you would use on your kids forhead... i think its $20 on ebay...  

[dkappelm]

1200 degrees Farenheight would be max temp for the L. Jet-Hot is a great product, but you will need to find a metal coating company to buy it and apply/cure for you. I am getting the Jet-Hot 2000 put on my diesel truck exhaust manifolds.

Are you going to get your FMF header and muffler coated?

Edited September 5, 2013 by dkappelm

[hockeyrick]

I got a decent 2nd hand Big Gun, but just wanted it to be different, the coating I have is "guaranteed" to 800, after that they can't guarantee no discoloration or?

So that is why I was curious as to how hot it "actually got in action, like I said, if after a ride someone would just stick a needle thermometer on the pipe to see what it registered, gives me an idea if a waste of time and money!

[Billi Ji]

800 F probably not enough. Other thing is, some of the high heat paints like VHF affected by petrol. ...but they are good for a year or so, at least.

[JohnnyUtah787]

I was considering coating my mega bomb header as well so would be curious to know the temp if anyone ends up taking a measurement. I'm also not sure how the coating will affect performance. The header is from BDSB so it already has an internal ceramic coating. Thoughts?