newer 300 timing marks

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May 4, 2009 | 06:12 PM

nevrenufhp

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Cargo Master

Joined: Feb 2003

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From: Sacramento

newer 300 timing marks

I got a harmonic balancer(3rd groove for future power steering) from an 83 E100, and I'm pretty sure it has different timing marks. Did they use a pointer on the pass side? I set the timing by vac gauge, and a lot of test & tune. The old marks on my(who know how old) 300 say it's 28* initial. If I go to the pass side, it reads in the teens. Just wondering what it's at so I dont get too much total advance.

May 4, 2009 | 06:35 PM

Harte3

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From: Spokane, WA

As long as you are not getting ping under load you won't have too much.

May 4, 2009 | 06:57 PM

nevrenufhp

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Cargo Master

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From: Sacramento

Too much or not enuf is just a slight worry. It used to ping under load, so I tightened up the 2 dizzy springs(2 light ones used). Runs velvetty smoooth and power is good.

May 4, 2009 | 07:06 PM

dustybumpers

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From: In my own world

find top dead center, and paint a mark where your old pointer is. then time as normal

May 4, 2009 | 07:15 PM

nevrenufhp

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Cargo Master

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From: Sacramento

I think that just may have to be the way to do it, Thanks.

May 12, 2009 | 06:57 PM

nevrenufhp

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From: Sacramento

I did it with a new paint mark, and it was only a few degrees off. It was then that I realized the Summit ignition box is likely the culprit. I'm thinking that's when the spark event starts(runs milti sparks for 20* of rotation), so I just gotta tune by ear as I've been doing. All is happy, and mpg is up a little now that its dialed in a little better.

May 12, 2009 | 07:06 PM

Harte3

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From: Spokane, WA

Easier starting too? When I installed a Mallory HyFire 6a, my engine fired like a rocket even in butt-cold weather.

The Summit Street & Strip is a pretty good buy for an after market box.