Miata Mailing List: March 1999, Message #516

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You need to put a dial indicator on the face of the hla. Cam specs are
generally given at a specific lift, though Mazda doesn't specify this in
their book. FWIW, 1.8 intake opens 5btdc,closes 48 abdc.  Exhaust opens 56
bbdc, closes 14 atdc.

Jason Cuadra wrote:

> On the same token, how does one measure opening and closing times with
> HLAs?  I did it on an engine with mechanical lifters, and I just noted
> crank angle (with appropriate marks added) when a feeler in the valve
> train (between cam lobe and follower) was gripped.  Is this procedure
> possible with HLAs?  I want to do this to determine which cams I have.
>
> TIA,
> Jason
>
> ______________________________________________________
> </pre>

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