tree monkey 661 turning 15k?!?!?

[bikemike]

So is the default on the solenoid closed? It would need to open more to limit the saw with fuel. Not less...
It could very well just be programmed as a governor at 13.5 or whatever. If it turns faster than the programming allows it opens the solenoid fully to limit the saw.


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Electronically going back to the stihl contract days of choking a saw out. Guess it also helps keep temps down. I love the 661.

 

[Keith Gandy]

If the spark isn't limiting it, than why would it matter?



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Maybe the double signal the 661 flywheel sends that messes some tachs up is doing the same with some plugs

 

[bikemike]

It's easy to defeat mtronic, but a fully unlimited 661 isn't as easy

Old fashioned I like the manually tuned carbs.

 

[Stump Shot]

I'm going to guess the inlet lever spring was changed or altered in the carburetor.

 

[Cigmaker]

Where have you been hiding Travis

Drinking a few beers and eating some fresh turkey nuggets. Apparently missing out on the latest news as well.

 

[bikemike]

Was there any nitro methane involved? Once a engine is hot there is no need for a spark lol. Don't ask me how I know

 

[bikemike]

Drinking a few beers and eating some fresh turkey nuggets. Apparently missing out on the latest news as well.View attachment 64852

Mmmmm food.

 

[paragonbuilder]

Is a wj69 the only carb guys have tried on the 661?
Other than the mtronic of course.


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[Stihl working Hard]

Drinking a few beers and eating some fresh turkey nuggets. Apparently missing out on the latest news as well.View attachment 64852

Looks delicious

 

[Mastermind]

Burp !!!

 

[bikemike]

out of curiosity, what are you guys using for spark plugs?

Typically a stock recommend spark plug but in the new electronic saws I think a non resistor plug may help trick a ignition system, or a cooler plug to heat up faster and clean out quicker

 

[Stihl working Hard]

Typically a stock recommend spark plug but in the new electronic saws I think a non resistor plug may help trick a ignition system, or a cooler plug to heat up faster and clean out quicker

You may be onto something there

 

[bikemike]

Imo. I think if it is going to be too much work to get a 200 300 hundred rpm out of these new saws. Then might as well just get it to push more power and torque and put a bigger spur ring on it if you want the chain speed. They pull a skip chain through everything with a 32 inch bc. All in all the 661 was a big improvement to the 660 stock to stock. I love the saw

 

[paragonbuilder]

Typically a stock recommend spark plug but in the new electronic saws I think a non resistor plug may help trick a ignition system, or a cooler plug to heat up faster and clean out quicker

How would the resistor, or non resistor affect the ignition system at all?


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[Mastermind]

Can we all agree that Scott is the man?



A WooT WooT is in order here.

 

[bikemike]

You may be onto something there

Did non resistor plugs mess with your radio back In the days? Yeah. But if you had a performance vehicle you didn't care bout a radio and had less chit to interfere with making spark at high rpm

 

[Keith Gandy]

Typically a stock recommend spark plug but in the new electronic saws I think a non resistor plug may help trick a ignition system, or a cooler plug to heat up faster and clean out quicker

Thats what I was gettin at in my post also Mike was a non resistor plug

 

[Deets066]

Imo. I think if it is going to be too much work to get a 200 300 hundred rpm out of these new saws. Then might as well just get it to push more power and torque and put a bigger spur ring on it if you want the chain speed. They pull a skip chain through everything with a 32 inch bc. All in all the 661 was a big improvement to the 660 stock to stock. I love the saw

This is more like 2,000 rpm, not 200

Some guys are who want to race a 661 are tryin to get it fully unlimited. Makes a big difference when you hit the wood 2,000 rpm faster than the next guy

 

[Keith Gandy]

How would the resistor, or non resistor affect the ignition system at all?


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The plug is recieving an interference that would cause it to limit?

 

[Mastermind]

This is more like 2,000 rpm, not 200

Some guys are who want to race a 661 are tryin to get it fully unlimited. Makes a big difference when you hit the wood 2,000 rpm faster than the next guy

Thankfully, I don't build saws for racing. I've never tried any non-stock parts on a 661 (except a piston).