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4.2ltr cam cover breathers.

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  #1  
Old 08-22-2016, 09:27 PM
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Default 4.2ltr cam cover breathers.

Has anyone done this mod?
Thought the pressure relief may help stop the gaskets leaking.
 
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Old 08-22-2016, 10:59 PM
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Just make sure the existing breather (and pipe) is clean. That's all you need.


Cheers
DD
 
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Old 08-23-2016, 03:20 AM
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I'm with Doug on that one.

The camcovers are well full of oil when the engine is running, as the drain back holes/slots are on the topside of the camshafts.

I do not use gaskets on that position. A decent bead of Hi-Temp RTV, with a liberal coating at the "D" seals, and no leaks ever.
 

Last edited by Grant Francis; 08-23-2016 at 05:26 AM.
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Old 08-23-2016, 05:05 AM
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Originally Posted by Grant Francis
I;m with Doug on taht one.

The camcovers are well full of oil when the engine is running, as the drain back holes/slots are on the topside of the camshafts.

I do not use gaskets on that position. A decent bead of Hi-Temp RTV, with a liberal coating at the "D" seals, and no leaks ever.
Thanks Grant,
I haven't tested the latest repair yet, this attempt no.3 on the left side. This time i used a new gasket coated both sides with three bond. I swear by this stuff, when we build drag bike engines the ONLY gasket in the engine that isn't just three bond is the head gasket. Will test it tomorrow & see how it goes.
 
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