WTD: Timing/ignition table for Megasquirt

Fuel Supply & Ignition Systems
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Piledriver
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Re: WTD: Timing/ignition table for Megasquirt

Post by Piledriver »

Re 13.5: It seems happiest there, and I cannot make this knock regardless of how hard I have tried.
Short of actually putting it on a dyno,(using TS calculated HP/TQ) making it richer just seems to suck more fuel.
The initial 10 degrees of cold adder is ~all out by the time the CHT hits ~250F.

Despite my best efforts, AFR calibration could also easily be off 2-3/10ths as I'm still running analog between the WBO2 and the MS. I need to stick a NB in and see how close it checks out at stoich targets.

I plan on doing 96s this summer largely in order to bump the compression, although I may put 1.7L heads on it instead. (and cut down the jugs to fit the heads/use 93mm flattops)
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
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TouringBubble
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Re: WTD: Timing/ignition table for Megasquirt

Post by TouringBubble »

So am I just running the most aggressive spark table of anyone on here? I mean, it's only 9.5:1, but I surely thought there would be people pushing beyond what I'm doing.
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Dirty '73 Beetle. 2109cc with way too much intake.
Power numbers to come.
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Steve Arndt
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Re: WTD: Timing/ignition table for Megasquirt

Post by Steve Arndt »

Depends on your definition of aggressive. More isn't better with timing. Minimum timing for best torque is the safest and best tuning method.
http://www.google.com/#q=minimum+timing+best+torque
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TouringBubble
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Re: WTD: Timing/ignition table for Megasquirt

Post by TouringBubble »

I understand minimum best torque, but I also understand the knock limitations of 93 octane fuel. I've monitored tq output and it increased with timing, so I'm not at MBT and I'm also not at the knock limit.
Follow my SCCA Rallycross build on Facebook.

Dirty '73 Beetle. 2109cc with way too much intake.
Power numbers to come.
Sponsors: Satellite Racing - Defined Performance
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