MS241cm mods

[Matt Hogden]

Well, my new 241cm has 10 tanks through it now and i would say that it is run in.
Just wondering what you guys are doing to squeeze more power out of these little gems

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[blsnelling]

https://www.arboristsite.com/commun...ce&c[title_only]=1&c[node]=9&c[user][0]=12346

 

[Matt Hogden]

Hey Brad I can't get the link to work

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[SCHallenger]

I have run Brad's ported 241. The torque is amazing. He definitely has the answer if you want super performance out of yours!

 

[blsnelling]

Hey Brad I can't get the link to work

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Just search "MS241C", title only, posted by me.

 

[Matt Hogden]

Ok . Thanks mate.
Any chance you can work mine over?

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[Matt Hogden]

Would a muffler mod and base gasket delete work on the MS241cm ?

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[Matt Hogden]

.?

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[blsnelling]

I'm not taking any saw work. Sorry.

 

[Matt Hogden]

I'm not taking any saw work. Sorry.

No worries mate.
What's your thought on a base gasket delete on these saws?

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[ericm979]

Measure the squish clearance and see. Due to manufacturing tolerances removing the gasket could result in good squish clearance on one engine and not enough on another.

 

[Matt Hogden]

Okies. Thanks mate

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[blsnelling]

As already mentioned, you'll just have to measure your squish. Count on the gasket being about .017".

 

[Matt Hogden]

I have always been skeptical of base gasket deletes. Even when a tighter squish is achieved, due to the fact that "Lowering" the cylinder changes the height of the ports, possibly changing the power curve of the saw.
Is this true? Or is it generally accepted that the benefit of the increase in compression and tighter squish of a "base gasket delete" far outweighs the changed timing of "lowering" the port timing.????
I would love some clarification on this, as i have always been confused about this topic.

As already mentioned, you'll just have to measure your squish. Count on the gasket being about .017".

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[blsnelling]

Port timing change is totally negligible. Intake duration is increased which is a good thing. Exhaust and transfers are decreased a tiny bit, but blowdown is unchanged. It's a non-issue.

 

[Matt Hogden]

Sweet. Thanks Brad. That's what i wanted to hear! Lol

Port timing change is totally negligible. Intake duration is increased which is a good thing. Exhaust and transfers are decreased a tiny bit, but blowdown is unchanged. It's a non-issue.

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[Overkill338]

Well, my new 241cm has 10 tanks through it now and i would say that it is run in.
Just wondering what you guys are doing to squeeze more power out of these little gems

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The muffler mod made a noticeable difference in mine. I'm about to do a small timing advance as well.

 

[Matt Hogden]

The muffler mod made a noticeable difference in mine. I'm about to do a small timing advance as well.

How do you do a timing advance?

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[ericm979]

Usually the timing pickup can be adjusted. If not you need to move the rotor on the crank. Advancing timing makes it more likely to overheat or detonate, both of which often kill pistons and cylinders.

 

[Matt Hogden]

Usually the timing pickup can be adjusted. If not you need to move the rotor on the crank. Advancing timing makes it more likely to overheat or detonate, both of which often kill pistons and cylinders.

Let us know how it goes

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