timing ???
10 Second Club
Joined: Aug 2010
Posts: 4,465
Likes: 192
From: Harford Co. Maryland
I started at 32*...bumped 2* up every pass until there were no more gains and then dropped it 1*.
Still a lot of tuning to do to the carb which may effect timing down the road....right now it's fat and happy....needs lean and mean.
If you post your specs, it will be easier/better for someone to give you a starting point.
Still a lot of tuning to do to the carb which may effect timing down the road....right now it's fat and happy....needs lean and mean.
If you post your specs, it will be easier/better for someone to give you a starting point.
For some people, like me, the car runs the fastest at 26-27 degrees. Other people run as much as 36 degrees. You will have to measure it either at the track or on a dyno to know for sure. The thing is, running 10 degrees too little timing won't hurt anything. 10 degrees too much, on the otherhand, can break ****.
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Teching In
Joined: Feb 2012
Posts: 49
Likes: 0
From: los altos hills
I don't know how dyno runs are interpreted. Failing the ability to set timing at each and every RPM to tweak a peak, if I was to do it I would set up a series of constant timing advances, run each up through the RPM's and overlay everything to get a composite graph. I would then take the peak power at each point in RPM, get the timing setting for that and move to the next power peak. In that way I would (I think) get an optimum timing curve. That still wouldn't say why there was a sweet spot although I don't doubt that there is one everywhere.
However that's not what I infer from the discussions I've read here, everybody including MSD just seems to include this timing dip right about the same point with no explanation.
I called GMPP for my crate and talked to their guy. He said 6 degrees at 0 linear to 27 at 3000 and steady as she goes. That's where I'm at. BTW I am not a drag racer, rather an autoX'r.
However that's not what I infer from the discussions I've read here, everybody including MSD just seems to include this timing dip right about the same point with no explanation.
I called GMPP for my crate and talked to their guy. He said 6 degrees at 0 linear to 27 at 3000 and steady as she goes. That's where I'm at. BTW I am not a drag racer, rather an autoX'r.
