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Shop Talk
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Exhaust Gas Temps
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http://www.clubcobra.com/forums/shop-talk/87197-exhaust-gas-temps.html)
| Rick Parker |
04-24-2008 08:03 PM |
Exhaust Gas Temps
Has anyone used an Infared Gun as a means of monitoring EGT's and header temps as a tuning aid? I recently purchased one and used it today for the first time today. Before doing so I checked the timing and adjusted it to 14 degrees at 900 RPM, giving 36 total by 2400 rpm. My observation was 6 of 8 cylinders betwen 385 degree and 410 degree range, 2 cylinders were in the mid 260 degree range (???) This was measured about 1 1/2" from cylinder head at idle after a thourough warm up. How can this be interpreted?? Running 48 IDA's, which are rich at idle.
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| eschaider |
04-26-2008 12:26 AM |
Two of the Weber throats are running lean for some reason. Something in the fuel metering for those two holes is different. Maybe air leaks below the throttle blades?
Ed
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| Jac Mac |
04-26-2008 01:24 AM |
I would think that the two 'cooler' cyls are rich @ idle. When doing pyro temps on dyno & boats @ full throttle going leaner means higher temps until you get too lean then temps drop away again, followed closely by the pistons etc:CRY: if you do not get off the throttle quick.
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