O2 Sensor Location - F100
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Tuned
Joined: Jan 2023
Posts: 305
Likes: 54
From: NC
I plan to develop a general vacuum advance curve this weekend with a timing light and a hand pump. But after that, it'll still be hard to determine total advance under different driving conditions. For example, mild acceleration at roughly 2200 RPM is going to give me 15 degrees of mechanical advance (+12 base) and probably still some amount of vacuum advance...but how much? And what about a sustained climb at 3,000 RPM? At that point, my mech is all in at 21 degrees, so any vacuum advance could push me too far.
The engine sounds fine, so I probably shouldn't overcomplicate it!
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Tuned
Joined: Jan 2023
Posts: 305
Likes: 54
From: NC
Is the vacuum can adjustable with a Allen thru the vacuum port?
The factory distributor on my 300 six can be adjusted but it only adjusts at what HG the advance starts to move / work not a total limit.
I would say if total timing is too much then use the bushings on the mechanical weights and let the vacuum do it's thing.
Dave ----
The factory distributor on my 300 six can be adjusted but it only adjusts at what HG the advance starts to move / work not a total limit.
I would say if total timing is too much then use the bushings on the mechanical weights and let the vacuum do it's thing.
Dave ----
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oldschoolninja
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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Aug 21, 2014 10:05 PM
