Question about different exhaust temperatures.
Thread Starter
Racer
Joined: Apr 2005
Posts: 454
Likes: 0
From: Welcome to Club Cranky. Now get outta here!
Question about different exhaust temperatures.
I have an '02 Z06 with a new short block engine, FAST intake and TB, ET Performance heads, American Racing headers and cats, stock injectors and it has been dyno-tuned at about 430RWHP.
I was changing the thermostat and playing with some mods with the oil cooler/radiator shroud to lower the operating temps at the track, and while checking some of the temps using an infra-red pyrometer around the engine while it was running, I noticed that the header temps varied quite a bit. The temps range from 300 to over 500 degrees, with the right side cylinders each running 500+ degrees...the left side runs cooler.
What causes a variance in these temps, and what should be an average exhaust temp while idling?
I was changing the thermostat and playing with some mods with the oil cooler/radiator shroud to lower the operating temps at the track, and while checking some of the temps using an infra-red pyrometer around the engine while it was running, I noticed that the header temps varied quite a bit. The temps range from 300 to over 500 degrees, with the right side cylinders each running 500+ degrees...the left side runs cooler.
What causes a variance in these temps, and what should be an average exhaust temp while idling?
Melting Slicks
Joined: May 2004
Posts: 2,502
Likes: 4
From: cincinnati ohio
I think you ought to look at your injector duty cycle sometime.....Most heads/camshaft cars will require injectors. Hell my bolt on only '03 Z06 needed injectors. If the computer is unable control fuel and it is running lean under WOT, exhaust tmeperatures will be HIGH. I know that you are talking about idle exhaust temperatures , but just trying to share what I know........
Uneven fuel distribution , or airflow through the engine will make exhaust temperatures vary......Are you sure that your upper/lower plenum of your FAST intake is sealed completely ???? I have seen several that have not been........
Uneven fuel distribution , or airflow through the engine will make exhaust temperatures vary......Are you sure that your upper/lower plenum of your FAST intake is sealed completely ???? I have seen several that have not been........
