'15 Echo CS620PW Information

[BGE541]

Nope dolly is bone stock

You need to then

 

[CoreyB]

You need to then

LOL I have heard there is not much improvement left on the table short of porting them. I glanced at it today when I pulled the muffler to inspect the piston. All there is, is a baffle, empty can, and the exhaust port. I could delete the baffle and put a larger exhaust port. But when master mind built one he said there weren't any gains from a mm or timing advance. It is already pushing 215 psi compression.

 

[CoreyB]

Looks like it is oiling ok at least

 

[Chris J.]

OK but I forewarned you. Here is a video I have shared in other places.
The little 61cc dolmar takes on a serious heavy weight. The 87cc stihl 056 super.
Let's get ready to RUMBLEEEEEEE!

Looks like old school torque verses modern RPM & chain speed. Larger wood + longer bars = a different result.

That 6100 is impressive none the less.

 

[CoreyB]

Looks like old school torque verses modern RPM & chain speed. Larger wood + longer bars = a different result.

That 6100 is impressive none the less.

I agree. You can stand on the 056 with a 20 in bar buried. I think 28" would be the tipping point in the 056 favor

 

[Chris J.]

I agree. You can stand on the 056 with a 20 in bar buried. I think 28" would be the tipping point in the 056 favor

The 6100 ran like a 24" bar would be no problem.

 

[BGE541]

All stock? Still have base gasket?

 

[CoreyB]

All stock? Still have base gasket?

Yep all stock. Still has base gasket, no mm, the only thing I have done is got the 20" tsumara bar and wrap handle. Here it is first tank of fuel noodling with a 24" bar

 

[BGE541]

Pull that base gasket muffler mod... Must... Not... Leave.... Stock

 

[Big Block]

 

[Big Block]

My chaps kept pulling my pants down and I said **** it. Don't judge

 

[CoreyB]

About time someone posted a video other than dolmar.

 

[bikemike]

Pull that base gasket muffler mod... Must... Not... Leave.... Stock

And widen the exhaust port up a Lil bit

 

[bikemike]

It seems to like being under load

 

[Big Block]

It seems to like being under load

I noticed that too. It's a torque monster for a 60cc

 

[BGE541]

I noticed that too. It's a torque monster for a 60cc

Not to mention he is at like 5000 ASL and he seems to find some of the hardest wood to cut on!!! Good cutting!

 

[Big Block]

Hey thanks Reed

 

[Big Block]

You know what I want to see?...........a ported 590 I know they are out there. I may just have to get it done and see how mean they really are.

 

[rburg]

The only 590 I have run was ported. It was a good runner but I have never run a stock one to know how much improvement there was.

 

[CoreyB]

You know what I want to see?...........a ported 590 I know they are out there. I may just have to get it done and see how mean they really are.

I think you would end up investing a lot and not getting much better performance then a mm 620.
On top of the port work I think you would end up needing a carb and coil.