Thread: Ignition Timing Curve Thoughts
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Old 07-13-2013, 06:58 AM
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RET_COP RET_COP is offline
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Location: Westerly, RI
Cobra Make, Engine: Fordstroker 408w custom solid roller-Craft ported Brodix 17*heads-CFM ported Vic Jr. intake-1 3/4 primaries- 575hp-TKO-600RR Liberty upgrade- -Moser 8.8 trutrac-McLeod Street Extreme--QA-1-Wilwood brakes, Classic Chambered 3" Cobrapacks, Avon's
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I was getting a hanging idle and looked into it extensively. It appeared to me that the vacuum canister was hanging up a bit. I tried to lube it but I could not get it to change.
Just for a quick fix I pulled off the vacuum line and put in a quick advance curve. ( 2 light silver springs). I have the black 18* stop and run a 14* initial with my modern combustion chamber design.
My timing is all in at my cruise speed (2200 rpms)
I see no difference from the seat of my pants. Temps- same, Power-same, idle-perfect and rock steady.
At this time I'm just going to keep it where it is.
If I lost 1or 2 miles per gallon on the highway I'm not going to worry about it right now.
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