Posted By: emarine01
Header temp - 02/04/09 08:39 PM
Hey what kind of header temps with a infra red gun are you guys seeing , engine warm @ idle , hottest point on 
header?
header?
Header temp
Posted By: tonycpe
Re: Header temp - 02/04/09 08:57 PM
385 to 395 degrees if I remember corectly
QC coatings coated em pretty nice.
QC coatings coated em pretty nice.
Posted By: emarine01
Re: Header temp - 02/04/09 09:04 PM
Thats a good point , I forgot about header coatings, we are not coated and ave temp is around 500F
Posted By: sixpackgut
Re: Header temp - 02/04/09 09:19 PM
im usually around 500 without coating
Posted By: blownzoom440
Re: Header temp - 02/04/09 10:54 PM
Quote:
Hey what kind of header temps with a infra red gun are you guys seeing , engine warm @ idle , hottest point on
i would not think a gun could read a fully warmed engine exhaust.i just have an EGT that reads 1320+/- after a run aqt idle.i think a gun goes to 900F.
Posted By: emarine01
Re: Header temp - 02/04/09 11:17 PM
Quote:My gun reads to 999 , egt would be lots higher than infra red ,egt is in the path of the exhaust , infra red is outside jacket , egt is the way to go for real #s but for the rest of us infra red will have to doQuote:
Hey what kind of header temps with a infra red gun are you guys seeing , engine warm @ idle , hottest point on
i would not think a gun could read a fully warmed engine exhaust.i just have an EGT that reads 1320+/- after a run aqt idle.i think a gun goes to 900F.
Posted By: Cab_Burge
Re: Header temp - 02/05/09 04:51 AM
EGT at idle versus header temps at idle below 1100 RPM will be a bunch lower than 1000 F, or they should be. Running the motor at or above 1200 RPM will make both temps go up 
Posted By: blownzoom440
Re: Header temp - 02/05/09 09:52 AM
Quote:
EGT at idle versus header temps at idle below 1100 RPM will be a bunch lower than 1000 F, or they should be. Running the motor at or above 1200 RPM will make both temps go up
that must be my problem.i have high idle.
emarine01are you thinking of wrapping the headers or thinking of other things?how about some pictures it is winter.
Posted By: emarine01
Re: Header temp - 02/05/09 01:19 PM
We tryed wraping them but too hard to clean , baked on mud , break out the hammer , I was just wondering what some other header temps were to kinda base line mine , my friend runs a 500 inch pro stock engine and his temps are in the 900s idles at 1800 rpm , we run 12 to 1 so when were not racing we run 93 pump gas to move the truck around , header temps on 93 are 150f lower than racing fuel the 112 must still be burings on the way out , ill try to post some pics but thier not too good
Posted By: blownzoom440
Re: Header temp - 02/05/09 10:48 PM
my temps must have to do with my blower.i need to get back out.i only got out 4 times in 2yrs due to upgrades.i am good to go tho.
what is the use of your engine,race street...?
what is the use of your engine,race street...?
Posted By: 340B5
Re: Header temp - 02/05/09 11:26 PM
830 to 860 here w/uncoated headers,then go's over 1000 off idle and above.
Posted By: emarine01
Re: Header temp - 02/06/09 01:51 PM
We mud race a w5 small block , the 340 temps are close to what we had with iron j heads on a 392 mid 800F