[Shotimes] Slight ticking from below intake

[Steve Weinrich]

This is what it says....

      Why it's important Thanks to Doug Lewis.
      It's important to do the valve adjustment. It's not because the valves
will be out of adjustment; it's that the shims have a service life. The
shims will wear without affecting the valve clearance. The shims are
hardened to one specific hardness less than the cams, the idea being that
the shims will wear first.

      99% of the time you won't find any valves out of spec, but you will
find shims that are worn. The wear looks like dirt that you can't wipe off.
Once the outer hardness (softness!) is worn thru, it starts to wear the
cams. Look for chips or spots in the hardening. If you find any, replace the
shim. This means that after you measure the clearance with a feeler guage,
you MUST remove the shim to inspect it. If it is worn in any way, it must be
replaced. If you have to replace a shim, try to get the lash for that valve
in the middle of the clearance range (0.008;" intake, 0.012;" exhaust). The
full valve spec range is as follows:
      Intake: .006 - .010
      Exhaust: .010 - .014

      I cannot stress this enough. The valves must be adjusted at 60K, not
for clearance, but for the life of the shims and the cams. Too many times, I
have found worn shims and worn cam lobes that could have been avoided by
doing the maintenance at the right time.








I didn't make this up just for Ss &G's.  If it ain't accurate, take it up
with Doug and the FAQ manager.


Steve


----- Original Message -----
From: "Dave Kegel" <d.kegel@attbi.com>
To: "'Steve Weinrich'" <stevwein@swbell.net>
Cc: <shotimes@autox.team.net>
Sent: Thursday, October 31, 2002 5:44 PM
Subject: RE: [Shotimes] Slight ticking from below intake


> It says "Look for chips or spots in the hardening. If you find any,
> replace the shim."
>
> This is true.
>
> You said "The valve shims are intended to be replaced at the adjustment
> interval, not just checked."
>
> This is not true.  They are to be replaced if they are worn.  Big
> difference.
>
> Dave Kegel
>
> -----Original Message-----
> From: shotimes-admin@autox.team.net
> [mailto:shotimes-admin@autox.team.net] On Behalf Of Steve Weinrich
> Sent: Thursday, October 31, 2002 4:41 PM
> Cc: shotimes@autox.team.net
> Subject: Re: [Shotimes] Slight ticking from below intake
>
>
> http://www.shotimes.com/php-bin/modules.php?op=modload&name=News&file=ar
> ticl
> e&mode=thread&order=0&thold=0&sid=67
>
> In the section labeled "Why it's Important" which has Doug Lewis' name
> in it.  The format of the article does not make clear if the information
> is attributed to him, but it appears so.
>
> If the info in the FAQs is obsolete or has been discredited, so be it.
> They need updating in that event.
>
> Steve