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RE: Spica Timing
When rebuilding the GTV's engine, I tried both Wes I's and my local
Alfa mech. SPICA pump timing methods just to see if I was doing it
correctly. I could not get them to agree....
My local Alfa mech. said to set the engine's pulley to the 'I' just
before TDC of #4 cylinder. I removed the distributor cap and watched
the rotor turn until it was almost to #4 TDC and then check the pulley.
Then I lined up the SPICA pump indicators and put on the belt. Never
could get the belt on and keep the SPICA pump marks lined up perfectly
at the same - about 1/2 a tooth off.
When I tried Wes's method, the 'answer was something like 8 teeth off.
I called Wes and he said that he didn't have an explanation for the
discrepancy. I ended up using my Alfa mechs method.
Bruce
'73 GTV
'86 Spider
> I believe Wes Ingram's book describes an alternate method of timing the pump
> that might be useful to double check the setting. I'd have to check the
> details, but the book describes a technique whereby the engine is set at TDC
> and then the pump pulley is moved a certain number of teeth ( 11 or 13? )
> clockwise ( with the direction of engine rotation ) and then the belt is
> installed. The pump timing does not have to be exact ( +/- 0.5 tooth spacing
> ) and it doesn't hurt anything if the pump timing is initially 180 degrees
> off.
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