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pda914 |
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#1
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Newbie ![]() Group: Members Posts: 40 Joined: 22-July 10 From: Verona WI Member No.: 11,966 Region Association: None ![]() |
Is it at all possible to remove the engine tin over the oil cooler and temp sensor without dropping the engine? I need to get at both the oil cooler top and I need to replace the temperare sensor.
If so what should I look out for? |
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stugray |
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#2
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None ![]() |
Why would you :
QUOTE be replacing it with a type K themocouple together with a themocouple amp with offset correction and some op-amps to make it act like an thermister with a negative temp curve that the megasquirt expects. why wouldnt you just replace it with a new thermistor "that meagasquirt expects" that is not grounded to the engine case like the stock version? Sounds like a lot less work. Take a stock CHT, and drill out the core and replace it with a two wire (or 4-wire if you are really anal) and hook it up. Converting from thermocouple back to thermistor-like thing sounds like an experiment that isnt required. Stu |
pda914 |
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#3
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Newbie ![]() Group: Members Posts: 40 Joined: 22-July 10 From: Verona WI Member No.: 11,966 Region Association: None ![]() |
I will be replacing it with a type K themocouple together with a themocouple amp with offset correction and some op-amps to make it act like an thermister with a negative temp curve that the megasquirt expects. This will isolate the temp sensor from the engine ground that electrically noisy. Thermisters are qustionable above 300F i think . A thermocouple is a nice linear sensor but the only issue is making something with a postive thermnal coefficent to be negative. Why would you : QUOTE be replacing it with a type K themocouple together with a themocouple amp with offset correction and some op-amps to make it act like an thermister with a negative temp curve that the megasquirt expects. why wouldnt you just replace it with a new thermistor "that meagasquirt expects" that is not grounded to the engine case like the stock version? Sounds like a lot less work. Take a stock CHT, and drill out the core and replace it with a two wire (or 4-wire if you are really anal) and hook it up. Converting from thermocouple back to thermistor-like thing sounds like an experiment that isnt required. Stu |
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