Have been away from the forum for a while - busy with other things, with just the occasional summer drive for the C2. Got back at I this weekend and the top of my "to do" list was to investigate the idle temperature.
I bought and calibrated an IR gun. I have a stock 67 L36. I took a series of temp readings this aft. At 75F ambient, temp at idle (after maybe 40 min) measured at the thermostat housing with hood open rose to 260. The temp at the rad outlet was difficult to measure but looked about 145F (when tstat at 260)
I have looked through many of the relevant posts and eliminated a number of suspects as follows:
- Idle timing = 29 degrees (@700 RPM)
- Coolant = full
- Fan blade centered (front to back) 50% inside top of shroud
I'm running out of ideas - thinking I might reverse flush the engine next
Glenn
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