mccdeuce Posted May 20, 2017 Report Share Posted May 20, 2017 So I am possibly replacing some or all of my spark plugs I started looking at the usual fine wire vs massive and the Tempest "Application Guide" Then went to my logbook where I had documentation of all 8 being replaced in December (they were the Champion ones that were highly suspect). The logbook lists UREM38E while the application guide only lists the UREB37E to work with the IO-360 A1B6 and A3B6. So my question is what exactly is the difference in these plugs and is this a mistake of the shop who did the install? (I was not happy with this shop for other reasons and took my aircraft elsewhere (AGL Aviation) for its annual and other work in January. Quote Link to comment Share on other sites More sharing options...
N201MKTurbo Posted May 20, 2017 Report Share Posted May 20, 2017 I only see two types in the application chart the UREM37BY and the UREM38E. The UREM38E is the normal plug. Quote Link to comment Share on other sites More sharing options...
mccdeuce Posted May 20, 2017 Author Report Share Posted May 20, 2017 Interesting. Will dig some more because the Tempest guide shows differently. http://m.aircraftspruce.com/catalog/pdf/TempestAppGuideV3-07-01-13.pdf yes it is an A3B6 conversion. Quote Link to comment Share on other sites More sharing options...
N201MKTurbo Posted May 20, 2017 Report Share Posted May 20, 2017 http://www.aircraft-specialties.com/content/TempestAppChart.pdf This chart has a bit more detail. Quote Link to comment Share on other sites More sharing options...
jaylw314 Posted May 21, 2017 Report Share Posted May 21, 2017 (edited) The IO-360 A3B6 (non-D) I have uses REM38E's, Not sure why the A3B6D uses the long-nose type plugs The Tempest numbers are the same, they just add the U at the front. Edited May 21, 2017 by jaylw314 Quote Link to comment Share on other sites More sharing options...
Guest Posted May 21, 2017 Report Share Posted May 21, 2017 Does this help? Quote Link to comment Share on other sites More sharing options...
mccdeuce Posted May 21, 2017 Author Report Share Posted May 21, 2017 1 hour ago, M20Doc said: Does this help? Doc, thats the chart from tempest that I was looking at - which lists the UREB37E which seemingly is contradicting the aviation-specialties chart. I also don't understand the difference in the spark plugs to understand if it actually matters. Mark Quote Link to comment Share on other sites More sharing options...
N201MKTurbo Posted May 21, 2017 Report Share Posted May 21, 2017 I've never heard of a A1B6 in a Mooney. You should have an A3B6D or an A3B6 Quote Link to comment Share on other sites More sharing options...
N201MKTurbo Posted May 21, 2017 Report Share Posted May 21, 2017 There it is. I think the only difference is the cylinders with the long reach spark plugs. If he does indeed have the engine that needs the long reach plugs and they put in short reach plugs, it would probably run crappy. Better than doing it the other way around. Quote Link to comment Share on other sites More sharing options...
Guest Posted May 21, 2017 Report Share Posted May 21, 2017 If my memory is correct, the A1B6D could be converted to an A3B6D through a Mooney service bulletin. here it is, http://www.mooney.com/en/sb/M20-206.pdf Clarence Quote Link to comment Share on other sites More sharing options...
mccdeuce Posted May 21, 2017 Author Report Share Posted May 21, 2017 I have the A3B6. The tempest guide does not list the A3B6 only the A1, but my understanding of the difference between the engines was only related to the prop governor location. So I am not 100% sure on what is the right plug. If I go to Champion's Application guide they list the REM38E for both the A1B6 and the A3B6. While it is clear to me based on the Temptest guide that they list the UREB37E for the A1B6. http://www.championaerospace.com/assets/AV-14-Jan2010.pdf Quote Link to comment Share on other sites More sharing options...
N201MKTurbo Posted May 21, 2017 Report Share Posted May 21, 2017 5 minutes ago, mccdeuce said: I have the A3B6. The tempest guide does not list the A3B6 only the A1, but my understanding of the difference between the engines was only related to the prop governor location. So I am not 100% sure on what is the right plug. If I go to Champion's Application guide they list the REM38E for both the A1B6 and the A3B6. While it is clear to me based on the Temptest guide that they list the UREB37E for the A1B6. http://www.championaerospace.com/assets/AV-14-Jan2010.pdf Once again the REM38E is the standard plug. Always has been always will be. You are lucky to not have the dual mag. I'm running RHM38Es because of the turbo. You could too, but you would need a new set of wires. Quote Link to comment Share on other sites More sharing options...
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