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Cylinder #2 high CHT fix

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If your cylinder #2 (most forward, on the pilot side) runs 50F hotter than the rest, this will tame that issue.

Common on 4-cyl and 6-cyl Lycomings, in Pipers.

The fix is dead cheap, and takes maybe thirty minutes, but it will likely require some paperwork.

* Orest
 

Attachments

  • Baffle Modification for Better Cooling.pdf
    256.1 KB · Views: 434
Thanks so much sir.

But the attachment talks about the fix but never says what the fix is..

I am assuming its creating space in the front baffles and the cylinders?
 
If your cylinder #2 (most forward, on the pilot side) runs 50F hotter than the rest, this will tame that issue.

Common on 4-cyl and 6-cyl Lycomings, in Pipers.

The fix is dead cheap, and takes maybe thirty minutes, but it will likely require some paperwork.

* Orest
Being somewhat technologically challenged, I can’t seem to open this file.
If your cylinder #2 (most forward, on the pilot side) runs 50F hotter than the rest, this will tame that issue.

Common on 4-cyl and 6-cyl Lycomings, in Pipers.

The fix is dead cheap, and takes maybe thirty minutes, but it will likely require some paperwork.

* Orest
I am assuming its creating space in the front baffles and the cylinders?
 
@Ranchoa It is just a PDF file, use acrobat, or even the default PDF reader installed with your browser.

In any case, here is a screen grab of the relevant pages.

View attachment 24508

View attachment 24509


View attachment 24510

View attachment 24511
I pulled the upper cowling this morning to have a look. And as you described the shrouding is right up against the cylinder. Spacing it out from the cylinder may be slightly more involved on the Archer as the shrouding is securely fastened to numerous mounting points. I’ll have my AP look at it tomorrow.
 

Attachments

  • 785FB8BD-3902-42B5-A701-16A591ABCBDF.jpeg
    785FB8BD-3902-42B5-A701-16A591ABCBDF.jpeg
    195.7 KB · Views: 73
Last edited:
Actually, it looks just about exactly the same. As it shows in the pics, all you need to do is unscrew the lateral screw, bend the top edge forward, and refasten the screw but with a spacing bushing.

* Orest
 
It will flex in the middle to provide the gap after you remove the corner screw, flex it forward, install the bushing, and reinstall the screw.
 

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