|
November 14th, 2007, 17:25
| #1 |
| Senior Member  Join Date: Jun 2006 Location: FL
Posts: 419
 |  CHT and melting. Hey everyone. I was flying with an older gentleman today that said if the CHT gets above 400 degrees in a small plane (we were flying a Cirrus) that the cylinder heads would melt... anyone know if this is true or remotely true? Thanks |
|
|
November 14th, 2007, 17:28
| #2 |
| Senior Member  Join Date: Oct 2000 Location: Murfreesboro, TN USA
Posts: 916
| Re: CHT and melting. 400 degrees isn't even close.
__________________ When seconds count, the police are only minutes away |
|
|
|
November 14th, 2007, 17:34
| #3 |
| Senior Member Join Date: Oct 2000 Location: Murfreesboro, TN USA
Posts: 916
| Re: CHT and melting. According to the type certificate data sheet for the IO-360-ES, the max CHT as measured by a bayonet-type thermocouple is 460 degrees. What does the operating handbook say?
__________________ When seconds count, the police are only minutes away |
|
|
|
November 14th, 2007, 22:12
| #4 | |
| Old Skool  Join Date: May 2004 Location: Dallas TX
Posts: 1,557
| Re: CHT and melting. Quote:
Not even remotely true. However, keeping CHTs bellow 400 is a good idea and will lead to the longest life for the engine. Most engines have a max CHT of about 450, but this should be regarded as a momentary "yellow arc" for short durration only. Cruising around at 450 CHT all day every day will lead to problems.
__________________ "You may all go to Hell, I shall go to Texas" David Crockett | |
|
|
|
November 17th, 2007, 08:42
| #5 |
| Junior Member  Join Date: Jul 2004 Location: Florida
Posts: 44
| Re: CHT and melting. Most of the aircraft that I have flown have a caution range that starts at 450F. 500 on the CHT would change the crystalline structure of the metal alloy the cylinder head is made of. It will therefore permanently change it's properties, one of them being strength. After that it is a matter of time.
__________________ Gold Seal, NAFI CFI/CFII/MEI KAPF Florida |
|
|
 |
| Thread Tools | |
| Display Modes | |
| |
Linear Mode
