[alfa] RE: Spider Tapping Noise...

["Roger Hambro" <rhambro@xxxxxxxxxxx>]

Biba,

A better way to describe this:

The spring is not sticking up but rather it is not perfectly centered
under the retainer and so it rubs against the follower ID.  That
sharp edge created when the ends of the spring are ground square seems
to be what has bitten into the followers.

As a matter of fact, the springs are aftermarket - Shankle performance
springs I purchased about 10 years ago.  This wear may have been 
progressing for years or maybe my valve guides are worn causing
valve/spring to waggle and contact the follower ID.

I pulled the head this evening.  Tomorrow I will examine the valves,
springs and guides.

Roger Hambro
'78 Spider
Algonquin, IL

> 
> Date: Sat, 13 Nov 2004 16:30:00 -0800
> From: alfacybersite <acs@domain.elided>
> Subject: [alfa] Spider Tapping Noise...
> 
> Roger Hambro states: Removed cams and followers - The underside of 2 of
> the cam followers had a groove worn into the ID around the inside
> circumference. It appears that the top of the valve springs which are
> visible sticking out a bit beyond retainers wore a groove into the
> follower ID.
> 
> *******
> 
> A valve spring sticking up enough to wear a groove in the underside of
> the cam follower / bucket? Quite amazing. Whilst I don't mean to
> disparage Asian products and feel the Chinese items have improved
> immensely in the past few years...but were these valve springs purchased
> from a tiny province in China about 15 years ago? Or were the inner &
> outer springs, valve keepers, and retainers improperly assembled?
> 
> Boggles the mind,
> 
> Biba
> Irwindale, CA USA
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