delco dist timing

MoMac · Jun 21, 2018

Looking for info for timing a Delco distributor on a B/C. Thanks.

Bob · Jun 21, 2018

As with anything, initial timing can't be set much more than a handful of degrees,BTDC for starting (literally zero, if hand-cranked) and "running advance" is determined by the combination of weights and springs and advance limit stops in the distributor, so you really can't change running advance a whole lot from what the distributor is set up for, unless you are capable of "recurving the advance".

Aaron SEIA · Jun 21, 2018

Thumb over #1 plug hole till air rushes past. That gets you on the compression stroke, then get to TDC of that stroke. Line up the rotor with a lug on the cap. Apply plug wires in firing order in the direction of rotation.
AaronSEIA

MoMac · Jun 21, 2018

Thanks for the info. Couldn't remember which line to use on flywheel. CRS from old age I guess.

Bob Bancroft · Jun 21, 2018

Once you get #1 at TDC, if you turn the distributor counter clock wise until the points just start to open, timing will be very close- assuming your advance is working correctly. Then with it running, and a timing light, you can set the advance timing wide open, and you should be able to see the timing retard as you slow the engine down.

delco dist timing

MoMac

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Bob

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Aaron SEIA

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MoMac

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Bob Bancroft

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