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post #1 of 2 (permalink) Old 10-22-04, 04:49 PM Thread Starter
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Zetec valve adjusting shims

Do some Focus Zetec engines not have valve adjusting shims? The followers on my engine are different thicknesses, but no shims. I want to change cams to Ford Racing 3. Chances are clearances will not be the same. Do I have to buy different followers with shims ? What designation followers? I've worked on Cosworth and Toyota 16 valve engines before, but have never run into no shims.
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post #2 of 2 (permalink) Old 10-23-04, 02:23 AM
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Re: Zetec valve adjusting shims

The Zetec engines should not have shims. The valves and the tappets are precision-matched so they don't need adjustment shims, as there are no hydraulic lifters, and the lobes on the chain-driven cams are cold-hardened for long life. This ensures that the valve clearances can remain in spec for 150k miles or better.

As far as new cams....I have not done this so I could not tell you.
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