[rwarre]

Was having trouble with high CHT on #3 cylinder with my newly rebuilt engine, so decided to try making a bump out on the firewall side of the baffle. i got the pictures from another builder so thanks for that. The bump out worked, cylinder CHT dropped and all is good so far.

 

[plehrke]

What does it look like? I can’t visualize it from your description. Can you post the pictures?
How much higher temperature did your cylinder 3 have? Are there a different “bump outs” sizes for different temperature adjustments needed?

 

[gmkonrad]

I believe this is the bump out for #3 cylinder that RWARRE is referring to.
I put one on my -7 when making the baffles. NO hot #3 CHT. It works.
Photo credit to BillL.
https://lh3.googleusercontent.com/-...AAAAAAAB3s/0i877bJV9Sg/s800-Ic42/IMG_1547.jpg

Gary

 

[Mike S]

Maybe this??

https://vansairforce.net/community/showthread.php?t=37835

 

[rwarre]

Picture

The pic that gary put on is what I followed. I was able to drop the temp by about 25 degrees