M20J Cylinder Head Temps

[mooneyflyfast]

This hot number 1 has come up several times in the past.  If you cut 3/4 inch off the baffle infront on number 1 or make a new shorter one it will be your coolest cylinder.  I did it and several others did too.  My opinion is that it was put ther to keep it from running too cool.  On number 4 if you tweak the oil cooler baffling you might bring the CHTs down some.  Try to raise the baffle so that air can flow between th baffle and the top of the cylinder.

 

 

[bruce.m]

2 hours ago, carusoam said:

How old is the silicone seals around your cowl?

If original… they make new ones.

We can find our silicone guy for you…

Best regards,

-a-

They’re likely the original material and need to install new to see if that makes a difference as well.  If you have a contact who supplies it, that would be greatly appreciated!

[carusoam]

23 minutes ago, bruce.m said:

They’re likely the original material and need to install new to see if that makes a difference as well.  If you have a contact who supplies it, that would be greatly appreciated!

There is a guy…

a silicone Baffle expert…

Named Guy Ginsby 

He used to be around here often… 

https://www.csobeech.com/GeeBee-BaffleSeals.html

He makes a well engineered product…

And has an amazing business of making specialized silicone intake hoses and things for the modern sports car market…. 

If you talk to him… send my best!

Best regards,

-a-