Valve Cover Gasket

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Hans
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Valve Cover Gasket

Post by Hans »

-Does anyone know the part number for the gasket ( valve cover gasket) on a 2005 Diamond...IO-360..MIA

Thx Hans
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Lance Murray
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Re: Valve Cover Gasket

Post by Lance Murray »

75906 LYCOMING ROCKER BOX GASKET 75906 $2.72

http://www.aircraftspruce.com/catalog/e ... ey=4699543
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Chris B
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Re: Valve Cover Gasket

Post by Chris B »

You might consider the silicon valve cover gaskets. IME they seal better & are reusable. The cork gaskets are a PITA to remove and eventually leak.

For our parallel valve Lycoming IO360 engines:
OEM p/n: 75906-SP, Aircraft Spruce p/n: 05-11181. $9.50 each: link.

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Hans
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Re: Valve Cover Gasket

Post by Hans »

-Going to re-paint the covers while they are off, can anyone recommend a paint ?
Thx
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Chris B
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Re: Valve Cover Gasket

Post by Chris B »

FYI, Lycoming just released new silicone rocker cover gasket part numbers. For our engines the new p/n's are 06B26669.

Service letter L272A lists both cork & silicone gaskets with installation instructions: Link to L272A PDF

Note that the silicone gaskets use significantly less torque (35 vs. 50 in-lb).

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Re: Valve Cover Gasket

Post by rwtucker »

Another vote for the silicone. Much better for R&R and never leak whereas the cork always does. One note of caution: (OK, two) clean the cork off well and don't guess at the torque settings for the silicone gaskets. Getting leak free performance requires very little torque. Too much and they can leak after R&R
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