Joe Larussa Posted October 7, 2015 Report Share Posted October 7, 2015 Can somebody confirm the stock CHT location? Sounds like it's number three which I believe is right rear. Mine happens to be in the front right which I believe is number one. Quote Link to comment Share on other sites More sharing options...
Marauder Posted October 7, 2015 Report Share Posted October 7, 2015 Can somebody confirm the stock CHT location? Sounds like it's number three which I believe is right rear.Mine happens to be in the front right which I believe is number one. It should be in #3, but I don't know if it ever was mounted on another cylinder due to actual flight testing. Probably not. I found the #3 is not normally the hottest cylinder on my plane. Sent from my iPad using Tapatalk Quote Link to comment Share on other sites More sharing options...
Joe Larussa Posted October 7, 2015 Author Report Share Posted October 7, 2015 I would think number three would be hotter than number one. Getting a new probe tomorrow and think I'll put it in number three. Quote Link to comment Share on other sites More sharing options...
Marauder Posted October 7, 2015 Report Share Posted October 7, 2015 I would think number three would be hotter than number one. Getting a new probe tomorrow and think I'll put it in number three. Let us know what you find. When I installed my first engine analyzer, I knew the truth... Sent from my iPad using Tapatalk Quote Link to comment Share on other sites More sharing options...
KSMooniac Posted October 7, 2015 Report Share Posted October 7, 2015 My '77 had it in number 3. Better to have all 4 monitored though! Sent from my VS985 4G using Tapatalk Quote Link to comment Share on other sites More sharing options...
Joe Larussa Posted October 7, 2015 Author Report Share Posted October 7, 2015 I have a Insight 602 in there now that's going south. Replacing that next week but need the stock CHT to be legal I understand. Quote Link to comment Share on other sites More sharing options...
Houman Posted October 7, 2015 Report Share Posted October 7, 2015 I'm looking for the same info on my TSIO 520 NB. JPI thinks it's on #6, because it runs hotter. I guess no other way than to follow the harness and see which one is not a baynoet going into the EDM, right ??? Quote Link to comment Share on other sites More sharing options...
Yooper Rocketman Posted October 7, 2015 Report Share Posted October 7, 2015 On my Rocket (TSIO520) the number 3 cylinder is the original one the factory EGT probe is installed on. It's easy for me to remember because the JPI CHT probe is attached to the lower spark plug washer. I always have to very careful removing and installing the spark plug so I don't spin the washer. We had to re-silver solder the wire end on a new washer the last annual as the washer was looking pretty funky. Still reads right in line with the other cylinders on the JPI, so must have got it right. Tom Quote Link to comment Share on other sites More sharing options...
carusoam Posted October 7, 2015 Report Share Posted October 7, 2015 Tom, you are aware of the option from JPI? They have one that might be better than using the spark plug location. Best regards, -a- Quote Link to comment Share on other sites More sharing options...
Yooper Rocketman Posted October 7, 2015 Report Share Posted October 7, 2015 Tom, you are aware of the option from JPI? They have one that might be better than using the spark plug location. Best regards, -a- I figured there might be another option, just never looked into it. Where do they put it? Tom Quote Link to comment Share on other sites More sharing options...
carusoam Posted October 8, 2015 Report Share Posted October 8, 2015 (edited) I believe it is a similar ring style to what you have, but it is smaller and goes near the existing CHT. I believe the The small ring fits like a seal under the receiver for the bayonet. See this link... https://www.jpinstruments.com/shop/cht-gasket-probe/ The upside is, the T/C is closer to reading the proper temperature than being in a different part of the cylinder. As usual, I'm a PP, not a mechanic. Best regards, -a- Edited October 8, 2015 by carusoam Quote Link to comment Share on other sites More sharing options...
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