Biran, your EGT readings will be greatly influenced by the position of the EGT probe in the exhaust stack relative to the cylinder head, making almost all comparisons to other people's temp's close to meaningless. Tony Bingelis books recommend to place it within 2 inches of the cyl head exhaust port.
Not knowing this, I first started with the probe several inches from the head , and got very inconsistent readings . My probe is now installed approx. 2 inches from the #4 exhaust port ( left ,rear cyl) . I get consistent readings of almost 1500 deg on takeoff and climb . Cruise after several minutes rarely drops below 1350 deg. Also, mixture adjustment doesn't seem to have much affect on my Zenith 1821. My EGT gauge is an ACS Micro2000 series . This used to worry me until talking to Steve Bennett , who advised not to be overly concerned ? Possibly the gauge calibration is inaccurate ? After 105 hours of flying , I haven't had any major issues with these temps. Regards Chris Gardiner ----- Original Message ----- From: "Brian Kraut" <eng...@earthlink.net> To: "KRNET" <kr...@mylist.net> Sent: Wednesday, October 22, 2003 10:55 PM Subject: KR>EGT scale > I am having Westach make me a custom quad gauge with an EGT, MAP, temp, > and mixture indication (enough guessing what is going on with my > engine). The mixture uses an exhaust oxygen sensor like the Avmix > aviation units and the units that are sold for race cars. I will > install a switch to give me either carb air temp or outside air temp on > the temp position. Since they are doing a custom gauge with a custom > face I have my choice of range on the EGT. The Great Plains manual says > that EGT is normally 1,150 degrees and red line is 1,500 degrees. I was > planning on having the range scale from 700-1,500 degrees. Can someone > with an EGT on a VW tell me what the lowest EGT you normally see is. I > would like to have them make the instrument with the bottom of the scale > to be at the lowest normal EGT that I will see so I will have the > maximum swing on the needle. > > By the way, I have said before that there are some great people at > Westach. They were extreemely helpful when I had some problems with a > fuel sender and have been great with this gauge also. I always knew > that they could do the quads with different arrangements than their > standard instruments, but I never realized that they will do custom > range scales, and indications that they don't advertize like the mixture > indication and MAP. The price for the custom instrument is also only > slightly higher than their standard quads. I highly recomend talking to > them if anyone needs something unusual, not to mention that their > standard instruments are great also. > > > _______________________________________________ > see KRnet list details at http://www.krnet.org/instructions.html
