correct value for warm CHT reading (ohms) Options

[brant]

so my CHT reading was 76 ohms - hot (at 180F oil temp)
I'm reading 2 different things.. on the Brad anders site


one saying that a warm reading should be below 100 ohms
but then the table shows this: for 210F

Sensor Temp = 39 deg. F Temp = 61 deg. F Temp = 210 deg F

0 280 130 003 6.10 K ohms 2.94 K ohms 199.3 ohms
0 280 130 012 NA 2.85 K ohms 191.2 ohms
0 280 130 017 3.63 K ohms 1.74 K ohms 124.7 ohms



I'd love some input from Djet folks about what numbers you see on a warm motor?

brant

[brant]

I'm in agreement with everything you said.
I was re-reading anders last night... and he did say occasionally the CHT will fail with a ground and go 30% lean....

so that was the idea I was chasing.
but 76ohms hot sounds like it could be within tolerance.

I checked timing, fuel pressure, MPH-vacuum, and CHT(hot/cold) last night and everything was perfect. I thought about bumping my fuel pressure as one solution. But decided I needed to see the AFR's before I made any changes. In the past I had tuned this MPS and the AFR's were spot on. I even tuned a 2nd MPS at the same time, and may need to dig that one out of storage to do some more testing


unfortunately... I had a few beers in my wrenching last night.. so put off road testing until tonight...

should know more soon
and possibly, I'm chasing nothing... other than a plug that as you pointed out... is hard or inaccurate to read anyways.