Karl Probts
New member
- Joined
- Aug 4, 2018
- Messages
- 27
- Points
- 3
- Location
- You can't get there from here, USA
- Roxor Ownership
- Roxor Owner
Ok, a little bit on how I got my numbers.
I used type k thermocouple wire,attached with a thermocouple attachment unit directly to the exhaust system.No insulation over the T/c's.
Downloaded a type k thermocouple chart from NIST. Measuring voltage with a Fluke 87 multimeter.Compensated for the cold junction by adding the ambient value to the hot junction reading.
Roxor is stone stock.
Test run above 5600' elevation.
This is the location of the pre turbo tc. It is on the cast section just above the turbo inlet flange.
This is the location of the post turbo T/c. It is just below the turbo on the exhaust pipe.
This is a T/c attached right below the exhaust filter.
Drove the roxor three times floor boarded up a paved grade near my home that is a bit longer than a mile, and requires a down shift to 3rd to climb.Takes longer than a minute to ascend
Pre turbo max 755 and climbing slowly.
Post turbo. max 649 and rising slowly.
After exhaust filter max 570 steady,but stays hot for awhile after governor kicks back in at the top.
Observed 106 degree f drop across turbo inlet to outlet t/c locations.
Temp stays low if engine pulled down (between 1800 to 1400 rpm),so does seat of the pants power.
Temp rises much more when between 2200- 3000. When engine sounds like a electric weedeater.
I also tacked a thermocouple on the air inlet before the grid heater
Saw 140f ,but only watched it once.
Next I plan to temporarily put a stainless thermocouple probe on a block off plate where the Egr gets its exhaust. Hope to get the most accurate pre turbo reading from that location. I have seen others use that setup.
Hope to see the difference between it and my external T/c's for future reference.
I will post results if any interest in data.
I used type k thermocouple wire,attached with a thermocouple attachment unit directly to the exhaust system.No insulation over the T/c's.
Downloaded a type k thermocouple chart from NIST. Measuring voltage with a Fluke 87 multimeter.Compensated for the cold junction by adding the ambient value to the hot junction reading.
Roxor is stone stock.
Test run above 5600' elevation.
This is the location of the pre turbo tc. It is on the cast section just above the turbo inlet flange.
This is the location of the post turbo T/c. It is just below the turbo on the exhaust pipe.
This is a T/c attached right below the exhaust filter.
Drove the roxor three times floor boarded up a paved grade near my home that is a bit longer than a mile, and requires a down shift to 3rd to climb.Takes longer than a minute to ascend
Pre turbo max 755 and climbing slowly.
Post turbo. max 649 and rising slowly.
After exhaust filter max 570 steady,but stays hot for awhile after governor kicks back in at the top.
Observed 106 degree f drop across turbo inlet to outlet t/c locations.
Temp stays low if engine pulled down (between 1800 to 1400 rpm),so does seat of the pants power.
Temp rises much more when between 2200- 3000. When engine sounds like a electric weedeater.
I also tacked a thermocouple on the air inlet before the grid heater
Saw 140f ,but only watched it once.
Next I plan to temporarily put a stainless thermocouple probe on a block off plate where the Egr gets its exhaust. Hope to get the most accurate pre turbo reading from that location. I have seen others use that setup.
Hope to see the difference between it and my external T/c's for future reference.
I will post results if any interest in data.
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