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 Post subject: What is a normal TIT in a SR22TN
PostPosted: 12 Jun 2022, 20:05 
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Location: In between the opioid and marijuana epidemics
Aircraft: 182, A36TC
Went for a fight today in a TN cirrus.

Usual setting of 30/2500/17gph.

TIT right at 1650 or so. That seemed high.

Is this normal? Timing retarded? Temps all looked good

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 Post subject: Re: What is a normal TIT in a SR22TN
PostPosted: 12 Jun 2022, 20:25 
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Joined: 10/05/11
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Isn't this because the Conti turbo uses lower compression pistons than the TAT TN? Or was this a TAT TN?

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 Post subject: Re: What is a normal TIT in a SR22TN
PostPosted: 12 Jun 2022, 20:47 
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Honestly, I’d also post this on the COPA forum … they have some real experts on the engines and parameters. I owned a TN and those numbers seem a bit high high to me from memory, but it really depends on the plane and the engine.


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 Post subject: Re: What is a normal TIT in a SR22TN
PostPosted: 12 Jun 2022, 22:48 
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The right probe is in a disadvantaged location compared to the left; the left is the key one to watch in the TAT-TN setup


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 Post subject: Re: What is a normal TIT in a SR22TN
PostPosted: 13 Jun 2022, 07:57 
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For the SR22TN, the recommended max TIT is 1580 with a differential between the two sides no more than 50deg. It is also recommended to have 39gal/hr on takeoff and 31.5in of manifold pressure. You will get long cylinder life when run this way. 1650 - not so much.

Jim Barker in WI is probably the best resource for these airplanes having worked for both TAT and Cirrus during that time.


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 Post subject: Re: What is a normal TIT in a SR22TN
PostPosted: 13 Jun 2022, 08:27 
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Location: KTOL - Toledo, OH
Aircraft: 2004 SR22 G2
Username Protected wrote:
For the SR22TN, the recommended max TIT is 1580 with a differential between the two sides no more than 50deg. It is also recommended to have 39gal/hr on takeoff and 31.5in of manifold pressure. You will get long cylinder life when run this way. 1650 - not so much.

Jim Barker in WI is probably the best resource for these airplanes having worked for both TAT and Cirrus during that time.


Spot on Geoffrey. That's how I ran both of my SR22T's. My takeoff FF may have been 40-41gph which allowed for nice cool climb outs.

If the OP is talking TAT TN, then those are a little different but in all cases you want TIT's under 1600. 1650 is too hot.

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