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| Confirming Timing Chain Alignment (Page 1/1) |
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Notorio
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DEC 11, 07:38 PM
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Checked Ogre's Cave and did a search but I'm not certain about the answer to this question. Heads are off on a 2.8 so the cam can move much too easily, as I just found out. In putting a new timing chain and gears on I felt the cam rotate perhaps a tooth so I tweaked it back then installed the gear and finger-tightened the cam gear bolts. The cover and balancer are still off. Using the crank to rotate the gear set I can see TDC on cylinder #1 when both the Intake and Exhaust lifters are accordingly bottomed out. However, the rotational travel where both lifters are bottomed seems to easily be +/- a tooth or even more. My question is without installing the Cover and the Balancer, how do I confirm that the cam and crank gears are really in sync?
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seq
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DEC 11, 08:20 PM
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The cam and crank gears both have a mark on them, which should line up.
See 18:17 in this video for an example.
EDIT: Found some photos in a thread here.[This message has been edited by seq (edited 12-11-2019).]
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Notorio
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DEC 12, 12:00 AM
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Thank you Seq! I can see exactly what to do now  ...
... and the result is I was off by 2 teeth! I'm going to copy a quote here from that thread with important detail ...
| quote | | With the timing chain and gears properly installed, the dots on both the cranskshaft and camshaft gears point up at 12 o'clock with number 1 cylinder at TDC - Top Dead Center. With number 4 cylinder at TDC, the dots point towards each other- crankshaft gear at 12 o'clock, and the camshaft gear at 6 o'clock. |
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[This message has been edited by Notorio (edited 12-12-2019).]
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