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dtw dtw is offline
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Join Date: Dec 1999
Location: Raleigh, NC, USA
Posts: 7,842
Re: piston to valve clearance, why static???

Quote:
Originally posted by aigel
I am reading the rebuild book and am at the piston to valve clearance check section.

Why do you have to do this static? Why don't you just set the 2mm / 1.5mm clearance on the respective valves and turn the engine over very carefully. If there is no obstruction, you are clear.

Especially if you expect no clearance problems since you had no machining etc. but just want a sanity check, I feel that the static method in the book may be overkill / a waste of time?

TIA,

George
That is exactly what Bruce Anderson told me to do. However, he suggested working up to the clearance in increments just to be safe. This worked like a charm for me - I did it the "last" time I timed my engine after using the Wayne method (which was a huge pain in the ass but definitely 'safer' which is why I imagine he prescribed it in the book) the first time around. For that matter, Bruce also mentioned that 1.5mm for a minimum exhaust clearance would be fine, contrary to the Wayne book which prescribes 2.0mm. Actually part of our email exchange was published in Excellence earlier this year as a tech question - flip back a few issues and you should see it.

We also used Bruce's method exclusively when timing Tim's engine.
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Last edited by dtw; 04-14-2004 at 12:49 PM..
Old 04-14-2004, 12:46 PM
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