Jump to content

TSIO-360-LB engine question

grami-air

By grami-air
in Modern Mooney Discussion

 Share

Recommended Posts

grami-air Apprentice

grami-air

Posted
Posted

I never paid much attention to this before, but I noticed on the #5 cylinder (front right cyl) there is a plate that covers about 50% of the cylinder, but on the #6 cylinder (front left cyl) there is no plate.  We bought the plane 1 year ago, and it has a reman engine that was installed in 1991.  Can anybody explain what the purpose of this plate is and why doesn't the #6 cylinder have one.

 

Shadrach Grand Master

Shadrach

Posted
Posted

The cylinders are identical. On one side the cooling fins terminate at the barrel casting (it's a small area and the fins taper into the barrel). If you look down on cylinder #5 from the top with a light in the lower cowl, I am betting you will not be able to see light in the front side of the barrel. Lycomings are the same way.  I am assuming that the plate on number five merily covers that part of the cylinder. It may or may not have any effect on cooling. Does #5 run hot?

grami-air Apprentice

grami-air

Posted
  • Author
Posted

Yes, the #5 cylinder does run hot and I have new EGT & CHT probes installed on the #5 cylinder.  My mechanic says that the majority of the cooling (baffling) comes from the top of the cowl and not directly from the front of the engine which explains why the plate has a bend in it over the front top which appears to deflect the air down and over the #5 cylinder.  Was wondering why the #6 cylinder does not have a plate as well? 

philiplane Mentor

philiplane

Posted
Posted

The baffle placement has to do with the way air comes off the prop and into the cowl inlets. #5 is on the front right, where the descending blade forces too much air into the cylinder's forward fins, so the baffle deflects that air up to distribute the air more uniformly. Cylinder #6 on the left side is in front of an ascending blade, so there is less ram pressure at the blade root to cylinder fin interface. So no baffle is needed on that side.

  • Like 1

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.