ICM Timing Advance

[98valk]

the icm advance feature is disabled above 3000rpms. sounds like you might be on the outer edge of advance until the advance kicks out.

the ICMs do not have an advance feature that is disabled above 3k rpms. They both have set ignition curves from the factory.

[tank_post142]

the icm advance feature is disabled above 3000rpms. sounds like you might be on the outer edge of advance until the advance kicks out.

the ICMs do not have an advance feature that is disabled above 3k rpms. They both have set ignition curves from the factory.

please refer to the ect mod in the shoptalk section.

[98valk]

the icm advance feature is disabled above 3000rpms. sounds like you might be on the outer edge of advance until the advance kicks out.

the ICMs do not have an advance feature that is disabled above 3k rpms. They both have set ignition curves from the factory.

please refer to the ect mod in the shoptalk section.

U didn't state ECT mod, u stated ICM advance feature.

[tank_post142]

the timing cutout feature is part of the icm programing.

[98valk]

the timing cutout feature is part of the icm programing.

because the both of u do not want to be clear on the subject, I will have to.

at normal operating temp there is no advance cutout after 3k rpms.

160F water temp and below there is additional advance for cold engine running which will cut out above 3k rpm if the water temp is at 160F or below. Once the water temp is 160F and above normal operating temp, the additional advance is removed from the ignition curve, and is not there, below or above 3k rpms.

[tank_post142]

Thanks! but no need to be so crass

[Jess Tolbirt]

isnt it the other way around?
when the engine is cold you do not want to advance the timing because it will run like poo poo...i believe you would want the advance after it warms up to  get more power on low end,,,
when the fuel is cool it burns more rapidly than when warm,,,so when it warms up you want the timing to fire sooner to get the explosion just right at TDC,,,

[BonS]

You want more advance when cold to allow the enriched fuel mixture to burn completely. With a faulty ECT you will either have too little advance when cold and have detonation from firing too late or have too little advance when warm and get lousy mileage.

[98valk]

You want more advance when cold to allow the enriched fuel mixture to burn completely. With a faulty ECT you will either have too little advance when cold and have detonation from firing too late or have too little advance when warm and get lousy mileage.

"or have too little advance when warm and get lousy mileage."

ECT has nothing to do with this once above 160F. see curves here which I have posted over 20 times.
http://timskelton.com/valkyrie/tech/trigger_wheel_plus_dyna3000.htm

looking at the curves the I/S ICM will benefit more from the ECT mod at hwy speeds than the std ICM. 2500 and below RPMs the ECT mod puts out too much advance and will cause detonation seen as black spots on the plug insulator. ECT mod should only be used above 2500 RPMs. I have verified this with my setup whereas I can experiment with different curves.

 not enough advance for better mpg is a result on the cheap ignition system honda and other manufactures were using. no vacuum advance at part throttle conditions was provided, only a poorly designed ignition curve. using a dyna, 6 TW and the advance cutout feature of the dyna, I have somewhat compensated for this for much better mpg.
the GL1500 ICM has vacuum advance and intake temp advance curves. reason it gets about the same mpg as a valkyrie yet weighs about 200lbs more even with the less efficient two carb intake manifold design.

[Ricky-D]

I installed the ECT mod (electronically controlled temperature) to my Whirlpool refrigerator  and found that the ICM (ice cube maker) performed at a much quicker rate  when I switched to using warm water (over 160 degrees).

Now, I'm gonna see what I can do to the washing machine, and I think the dryer is beyond hope.

***

[John Schmidt]

I installed the ECT mod (electronically controlled temperature) to my Whirlpool refrigerator  and found that the ICM (ice cube maker) performed at a much quicker rate  when I switched to using warm water (over 160 degrees).

Now, I'm gonna see what I can do to the washing machine, and I think the dryer is beyond hope.

***

  Ricky, I'll have to remember to do that before our next party, we always seem to run out of ice with our present setup. As for the washing machine, I can see it all now....spinning so fast that I don't have to use the dryer. Thanks for the chuckle.

[Patrick]

The STD/Tour ICMs have a different advance curve than the IS units..
Late/retarded ignition timing or lower temps do not promote detonation, its actually just the opposite..

[Patrick]

The STD/Tour ICMs have a different advance curve than the IS units..
Late/retarded ignition timing or lower temps do not promote detonation, its actually just the opposite..