Isspro to Westach, hotter EGT's?
#1
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Isspro to Westach, hotter EGT's?
Today I took out the Isspro EGT/boost and put in an SRT-10 single pod/Westach combo gauge. It seems it rises temperatures faster and hits a higher EGT. Anyone have any thoughts on this?
Thanx.
Thanx.
#2
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I went from a Isspro to my edge and there was a difference for sure. My Isspro would idle to 300 deg. pretty quick and it takes twice as long to get to 350 deg. on the edge. I hit the pyro with a infra-red heat gun and the temp was closer to what the edge was reading. I know Isspro makes a pyro with an electronic box, I am not sure if that changes anything or not.
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I went from a Isspro to my edge and there was a difference for sure. My Isspro would idle to 300 deg. pretty quick and it takes twice as long to get to 350 deg. on the edge. I hit the pyro with a infra-red heat gun and the temp was closer to what the edge was reading. I know Isspro makes a pyro with an electronic box, I am not sure if that changes anything or not.
#5
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Isspro gauge
I have a Isspro fuel pressure gauge,... replaced it twice and it still doesn't work right. I have to put a real gauge on it and then know the differential to know what my fuel pressure (lift pump) is. This is my last Isspro gauge for sure. I don't remember the actual price but it is one of those fluid filled thingys that was over $200 I'm sure. You'd expect more for the $$$, IMO. If I wanted inaccuracy then I'd just guess what the pressure is and keep my $$$ in my pocket.
#6
Pretty impressive results for the SPA gauge/probe. This test report was one of the main reasons I went with SPA. The probe responded about twice as fast as the next closest one.
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I have a Westach guage and it always read about 100 degrees higher then the TST box did when I was running it. I would believe the one that shows the higher number just to be safe......
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#8
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Hello and thanx for all the info everybody. I just looked at the TDR test. I did not read the entire thing because I am lazy. They did have a chart with time for the gauge to read the full, correct temperature. The Isspro says 4 seconds and the Westach says less than one second. I always thought that EGT's with a manual trans. was safer because as soon as the EGT's started to rise, it was time to shift and temp's dropped. I think I may have been just looking at a slow gauge? I just pulled that out of my nose and it is just a possibility.
Thanx for all the info everybody.
Thanx for all the info everybody.
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jmccart I have the westtach as well. Try something for me. See if your boost go's too 0 when you ingage cruise control. Mine does, I'm in the center bolt which is center of the three they tell you to use. Only in cruise dose it read zero kick it off and boom you got boost reading.
Mine is very quick to react to heat whick I feel is a good thing. Westtach are mainly used in aircraft, so I'd think they would be of great quality.
Mine is very quick to react to heat whick I feel is a good thing. Westtach are mainly used in aircraft, so I'd think they would be of great quality.
#11
Hello and thanx for all the info everybody. I just looked at the TDR test. I did not read the entire thing because I am lazy. They did have a chart with time for the gauge to read the full, correct temperature. The Isspro says 4 seconds and the Westach says less than one second. I always thought that EGT's with a manual trans. was safer because as soon as the EGT's started to rise, it was time to shift and temp's dropped. I think I may have been just looking at a slow gauge? I just pulled that out of my nose and it is just a possibility.
Thanx for all the info everybody.
Thanx for all the info everybody.
There are two tables with different times. The first table (on page 2) shows the response time for the probes (going from 100*F to final voltage). The second table (on page 4) shows the response times for the gauges themselves. At the bottom of that page it says "Note that it will be the combination of temperature probe time and meter response time that will make the total time for the EGT to come to the correct temperature".
If you look at the results for the IssPros, it took 47.3 - 48.3 seconds for the probe to reach final temp, and 4 seconds for the gauge to respond.
Now take a look at the "Westberg" (appears to be same as Westach). It took 35.2 seconds for the probe to reach final temp, and less than 1 second for the gauge to respond.
When you compare the results above it makes sense you might see higher EGT's with the Westach. Both the probe and the gauge respond significantly quicker.
Granted this test is going from 100*F and uses a torch. Your exhaust and probe will always be hotter than that to start and I assume the stream of exhaust would also heat the probe faster than a torch, but the test does show there is definitely a difference between gauges/probes.
#12
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jmccart I have the westtach as well. Try something for me. See if your boost go's too 0 when you ingage cruise control. Mine does, I'm in the center bolt which is center of the three they tell you to use. Only in cruise dose it read zero kick it off and boom you got boost reading.
Mine is very quick to react to heat whick I feel is a good thing. Westtach are mainly used in aircraft, so I'd think they would be of great quality.
Mine is very quick to react to heat whick I feel is a good thing. Westtach are mainly used in aircraft, so I'd think they would be of great quality.
MikeyB