HELP dwell time and spark plug gap

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Mar 3, 2002 | 04:24 PM

snowyowl

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Joined: Mar 2002

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From: Renton USA

HELP dwell time and spark plug gap

I have a 351C with electronic ignition. What would be the electronic ignition timing or dwell time. Also what would be the spark plug gap? Plugs are NGK UR4 stock 6630.

Mar 3, 2002 | 09:17 PM

GT40man

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Joined: Sep 2001

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From: Jax FL

HELP dwell time and spark plug gap

according to ngk's site the plug gap is .035. dont know about the EI information. we didnt have EI on clevelands here in the states.

Mar 3, 2002 | 09:21 PM

Franklin2

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From: Virginia

HELP dwell time and spark plug gap

There is no dwell adjustment on an electronic ignition without points. Since it sounds like this is a modified engine( I don't think 351c had electronic ignition), you will have to experiment. Around 10 degrees BTDC would be a good starting point. The plugs can be gapped .035 to .045 which would be a conservative setting. You can gap them wider for more power, but they will need to be changed more often.