Broken camshaft

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Bchaney
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Joined: Tue Jul 07, 2015 12:07 am

Broken camshaft

Post by Bchaney »

Hi, I've been working on getting a super dexta back running that I bought. The pistons were stuck,but we got them lose. Now I see that the camshaft is broke in half. Both sides seem to move freely. Does anyone know what would cause the cam to snap in half?

Brian
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Re: Broken camshaft

Post by Brian »

One possibility is timing or valve stuck open and has been hit with the piston. Another is a faulty cam shaft casting.
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russelm
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Re: Broken camshaft

Post by russelm »

Every case of a broken cam shaft I have seen (various engine types) has been due to an oil feed failure to a camshaft bearing.

Easy enough to check on a Dexta given its external oil feed pipe work.
Mark Russell - 1959 Standard Dexta - Work In Progress!

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