TIMING MARKS QUESTION

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RRoller123
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Your car is a: 1980 FI SPIDER 2000
Location: SAGAMORE BEACH, MA USA

TIMING MARKS QUESTION

Post by RRoller123 »

So I have been curious about something for awhile regarding the timing marks. I have the 2L engine, with the factory crank pulley that has 3 belt positions, of which only 1 is used (combo Alternator and Water Pump).

The timing mark is on the outer edge of the middle pulley belt position, and there is a notch there that I have White-Outed for visibility. It lines up perfectly with the 3-position factory pointer system. (the white marked notch is just randomly at this crank position in this picture, at about 2.5 degrees advanced.)

Image

But there is a heavy notched mark on the inner belt pulley position, that does not line up with the other mark. What is this for? Not sure, just curious about this.

Image
'80 FI Spider 2000
'74 and '79 X1/9 (past)
'75 BMW R75/6
2011 Chevy Malibu (daily driver)
2010 Chevy Silverado 2500HD Ext Cab 4WD/STD BED
2002 Edgewater 175CC 80HP 4-Stroke Yamaha
2003 Jaguar XK8
2003 Jaguar XKR
2021 Jayco 22RB
2019 Bianchi Torino Bicycle
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