| Alternate timing method? [message #243870] |
Sun, 16 March 2014 22:39  |
Tilerpep
Messages: 404
Registered: June 2013
Location: Raleigh, NC
Karma: 7
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Senior Member |
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Warm weather has me doing season two of prep and improve. Attempting to tune the engine, and turned my efforts to timing. I can barely see the timing marks from the top side of the engine, as the hatch door is effectively hinged by the glued on carpet, so you flip it up and it leans against the dashboard - this takes a critical two inches away that I need to see the marks while running.
So, a PO or mechanic has installed a very heavy wire that effectively "points" at the balancer on the underside in full view. So, I'm wondering if my logic is correct here: if I can figure out what cylinder is dead center on this wire (like #1 is dead center on 0 mark) then with a dialable timing light (instead of more marks), would it read the same as #1? Seems so simple, but couldn't find any references searching back through old forum posts.
Thanks,
Tyler
1975 Glenbrook, 1978 Royale rear bath
Raleigh, NC
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| Re: Alternate timing method? [message #243874 is a reply to message #243870] |
Sun, 16 March 2014 23:25  |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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If my memory is correct, the firing order is 18436572. You get 4 ignition pulses per revolution so:
#1 would be at 0,
#8 would be at 90,
#4 would be at 180,
#3 would be at 270.
On the second revolution you get the other 4 cylinders so:
#6 would be at 0
#5 would be at 90
#7 would be at 180
#2 would be at 270
So you could time it using either #4 or #7 using your procedure.
Before you do this, check the firing order written on the intake manifold in case my memory is wrong.
Ken B.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: Alternate timing method? [message #243995 is a reply to message #243874] |
Mon, 17 March 2014 19:40 |
Tilerpep
Messages: 404
Registered: June 2013
Location: Raleigh, NC
Karma: 7
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Senior Member |
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Excellent! I am thinking I will have to pull a spark plug once I identify the cylinder to confirm the accuracy of the wire in relation to top dead center with a straw or small screwdriver and hand turning the engine. Is that right, and is there an easier/better way?
1975 Glenbrook, 1978 Royale rear bath
Raleigh, NC
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