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Shim sizes

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FOZ1A
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Shim sizes

#1 PostAuthor: FOZ1A » Tue Nov 11, 2014 11:51 am

During the winter motor rebuild, I am going to fit a set of cams with a valve lift of .395, duration of 284. Currently the shims are all between 250/260 - what shim sizes do I need to drop down to?

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Jeff Saunders
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#2 PostAuthor: Jeff Saunders » Tue Nov 11, 2014 12:07 pm

Unless the base circle of the cam is different (which is shouldn't be), you shouldn't need to change shims. The reality is you might need to tweak the clearance a little as manufacturing tolerances can vary a little between cams.
73 Z1 (turbocharged), a 74 Z1A, and some h***a's and Suzuki's...
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