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Old 10-25-2012, 07:46 PM
1981zapper 1981zapper is offline
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Timing 355

Iím having trouble timing my 355, I messed with the timing all day, the engine was rebuilt before I purchased the car and has radial cam, and I estimate the compression to be around 10:1, I started off with 18* initial and 38* Total, and took her for a run and at wide open throttle I heard pining, I then lower the timing to 15* initial and 36* Total I got all kinds of power and getting 13 PSI of vacuum pressure, but when I took her out for a run I still heard some pinging but not as much as I did when I had it 38*, I tried lowering the timing again but didnít help still heard some pinging and you can feel the loss of power, Iím running 91 Octane but the fuel is from June 2012, do you think the fuel is gone bad?
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