Missing baffling part?

[Onewinglo]

Guys,
After reviewing a photo of my right side cylinders I noticed a baffling separator is missing (between the cylinder heads). Aircraft Spruce lists 4 required (AF0550117 BAFFLE COMPONENT Part #: 05-03034 Mfr Part #: AF0550117 Special Order).
Is there a good reason this part would have been removed, such as better cooling without it?
Thanks, JP

[170C]

I believe that missing baffle item is intended to aid cooling.

[Bruce Fenstermacher]

Frank is correct. Without it air will escape and not be forced over and through the cylinders. Isn't your engine running a little hot?

The missing baffle is exactly the same as the one that is there between the other cylinders. Duplicate that one and get it installed.

[Onewinglo]

Yes my engine is running a little hot. I'll check the left side cylinders to determine how many baffles I need to order. I would make the part myself but as a new pilot and owner I have no (scrap) aluminum to work with...
I'll also order a new oil temp gauge and the correct tail wheel steering spring kit.
TAILWHEEL SPRING KIT 3239 Part #: 06-00008 Mfr Part #: U3239A-101
The smaller springs were installed when I bought the plane.
Currently on vacation and having fun but I look forward to getting home to fly and work on my 170!
JP

[GAHorn]

Yes, that missing baffle was intended to provide better cooling to that exhaust valve ...and that cyl will run hotter without it.
Replacing it is a good idea.