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  #51  
Old 05-27-2018, 01:00 AM
jrs14855 jrs14855 is offline
 
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Location: Lake Havasu City AZ
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Default Post #50

The lower portion of the baffle does not fit tight against the fins. Slightly overbending the radius will help there. I know the safety wire is standard on RV's but I prefer 1/8 diameter rod with the ends threaded. Does the #3 baffle fit tightly around the oil pressure relief valve?? Another common source for leakage.
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  #52  
Old 05-27-2018, 01:39 AM
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az_gila az_gila is offline
 
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
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Smile Standards change

Quote:
Originally Posted by jrs14855 View Post
The lower portion of the baffle does not fit tight against the fins. Slightly overbending the radius will help there. I know the safety wire is standard on RV's but I prefer 1/8 diameter rod with the ends threaded. Does the #3 baffle fit tightly around the oil pressure relief valve?? Another common source for leakage.
It seems the twisted wire method is no longer standard.

Vans OP-40 and OP-44 baffle kit instructions (2006?) now use the threaded rod method for tying the baffle ends together.
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  #53  
Old 05-27-2018, 09:17 AM
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Toobuilder Toobuilder is offline
 
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Quote:
Originally Posted by Hongie View Post
sorry for the thread revival.

is the cirlced bit the tab you are talking about?

I'm experiencing high CHT #3...

No. The "small tab" referenced is located right at the base of the cylinder, adjacent to the hold down nut. That needs to be bent into position (often isn't), and RTV'd shut (rarely is).

That said, the fin wrap shown in your picture should be tight against the fins (isn't), but as that's the #3 and does not have a bypass duct modification, it's not moving much air anyway so probably doesn't matter.

If the picture is your airplane, then build a bypass duct, tighten up that lower wrap, and your temps will come way down.
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WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.

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Last edited by Toobuilder : 05-27-2018 at 09:21 AM.
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  #54  
Old 06-02-2018, 03:29 AM
Hongie Hongie is offline
 
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Location: Mackay Australia
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http://imgur.com/5wpZYYDThanks Michael. Is this it?

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