In what temp range is headers usually at idle? and at cruise/wot?

I'm planning on getting a "laser Thermometer" off ebay and want to make sure It can handle the temepratures from me headers.

 

In the pits they'll be around 525-575*, after a pass or leaning on it a bit I get a ERR on my thermo gun that maxes at 700*

The other truck I run we had Jet-Hot do our headers, now when coming back from a pass it ranges from 250-300* depeneind on which tube you should and where at on the tube you shoot it. Within 2 minutes of shutting the engine off you cna literally grab the header with your bare hands and it's just really warm to the touch.

 

Well, mine are burning off paint thats supposed to be good to 1200*.... make of it whatever you want

 

Improper application I'd say. I painted old set before I installed them and they held up for 2 years before I sold them, no flakey paint. VHT ceramic paint, torpedo heater used to pre heat headers, then paint was applied in 3 generious coats and sat in front of torpedo heater again......but I know what your getting at

 

Then I need one that can show more than 1000 deg F, then.......hmm...

/N.

 

If they are getting to 550-650 you better fix what's causing it before something really goes haywire.

 

Really? My 500 degree gun typically tops out with no reading with my ceramic coated SLP Tri-Ys when idling in the driveway in closed loop. What is the usual reason for being too hot? Too much timing or not enough?

 

not enough I would guess..

When we put the engine together we put the dist. in at O deg, then when we put the engine in the car we forgot to advance it, took the car for a drive and the headers were glowing ...........

Just placed a bid on a 1000Deg F. IR thermometer.......