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High CHT's on extended climb, but low coolant temp

by Gary Van Meter in 912 / 914 Technical Questions 11 years ago

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Re: High CHT's on extended climb, but low coolant temp

by Gary Van Meter » 10 years ago

Gary Van Meter

2 10 0

Thanks Roger!

We use 91 octane mogas and try to keep it fresh. Flat and level RPM at 3500 feet is 5800.

I don't know what position the carbs are in but when I gapped the plugs last I did them on the tight side of the range. So maybe that is a factor. We don't have EGT gauges, but it looks like maybe we should.

Gary

Gary, isn't that way high RPM for straight and level?

Yes, we usually cruise about 5000-5400 RPM, but for testing purposes ran it hard for a few minutes. I think we need to tighten the baffle material between the air scoop and the radiator so so air leaks in order to drop the coolant temps a little. Our oil cooler is too big so it always runs cool.

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