Valve Rattle
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Cargo Master
Joined: May 2011
Posts: 2,388
Likes: 138
From: Northern California
Valve Rattle
Besides rebuilt heads which needs to occur, is there anything I can do besides drive slower? Cruising on the freeway, the 390 starts rattling (its version of lugging?) at about 3000 rpm especially climbing a hill.
Does living with this hurt anything?
Does living with this hurt anything?
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Cargo Master
Joined: May 2011
Posts: 2,388
Likes: 138
From: Northern California
Are there any good threads on setting the timing on a pretty much stock 390? I figured out how to check to make sure the advances are working properly but where should the dizzy be set?
Post Fiend
Joined: Apr 2008
Posts: 8,261
Likes: 15
From: Big Sky Country
This is the most informative tutorial i've come across in explaning the basics behind timing (link below).
My 390 (mild build) runs 12* initial, 26* mechanical, for 38* total (vacuum advance set at 14*).
FORDMUSCLE webmagazine: Timing is Everything - Distributor Curving for Maximum Power
My 390 (mild build) runs 12* initial, 26* mechanical, for 38* total (vacuum advance set at 14*).
FORDMUSCLE webmagazine: Timing is Everything - Distributor Curving for Maximum Power
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Cargo Master
Joined: May 2011
Posts: 2,388
Likes: 138
From: Northern California
Thanks for the link... By reading it the symptons seem to be more along the lines of the vacuum being adjusted a tad to much. I can cruise at 3000+ rpms with very little noise but under the extra lugging of a hill or hard acceleration it gets noisy. Idk maybe its a bit of both.
It sounds like this is something worth doing a good once over on though so I will.
It sounds like this is something worth doing a good once over on though so I will.
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