[alfa] 1993 Spider Valve Noise Solved!!!

["C.M. Bereznoff" <bereznov@xxxxxxx>]

After a lot of research on the issue, I had my mechanic set
the clearance at factory specs.  Then he ran the engine to
operating temp and quickly pulled the covers and checked the
clearances again.  WOW, the clearances opened up 4-6 thds!
Where the Intake was set at 0.017, it opened to 0.021-0.022,
the exhaust was 0.019 and opened to 0.023-0.024!   We agreed
to set the cold engine clearances to 0.012 intake and 0.014
exhaust.   What a difference!  No valve noise and best of
all the performance is now fantastic in the 3.5-6.5 Krpm
range  ( should be, the lift is increased and the duration
increased ).   The rpms just fly upwards from 3.7krpm to
redline.  The engine seems like a small V6!!  Maybe I get
this result from the performance ECU I installed but I never
felt it before the clearance changes.  There may be a liitle
less low end performance in the less than 2.5 Krpm range but
not very much less.  I am going to run these settings and
see how time treats me and the alfi !

Craig Bereznoff, 93 Spider, Longmont, CO
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