Another chainsaw dyno...

[Bigmac]

Place your bets...

Fresh China 660 triple port muffler

Seasoned 300th low top 288xp just off the mill.

View attachment 239793

Oem 288 ftw! Wins by 1.125 hp! Lol

it depends on if the China saw has internal mods or a cross cylinder

 

[Wilhelm]

. . .
On a different note, if anyone is good at excel, or Google and could find a template I could input numbers into. I would greatly appreciate that.

Or even a video etc.

Thank you

Off to run some saws.

@malk315 FTW

 

[Mastermind]

Very cool stuff Joe !!!!

Much impressed.

 

[MustangMike]

If the 660 has not been ported (OEM or AM), I would not bet on it!

Ported, with the right #s, they can run pretty darn nice!

 

[Red97]

Ported 8000 action...

 

[mdavlee]

Place your bets...

Fresh China 660 triple port muffler

Seasoned 300th low top 288xp just off the mill.

View attachment 239793

660 will probably still beat it. I’ve never ran an impressive 288 to me[emoji23]

 

[Red97]

Hmm....


The China 660 was a triple port muffler. Everything else was straight out of the kit.

The 288 all stock other than the front deflector is turned. Still has a screen.

 

[huskihl]

View attachment 239825
View attachment 239826

Hmm....


The China 660 was a triple port muffler. Everything else was straight out of the kit.

The 288 all stock other than the front deflector is turned. Still has a screen.

Chihl gonna beat up on the Husky when it breaks in

 

[Red97]

Chihl gonna beat up on the Husky when it breaks in

Oh, so you just assume the husky is higher lol.

So much for me trying to be tricky

 

[Duane(Pa)]

It will be interesting to see dyno results of saws getting broken in. Not so much between first and fifth tank, but between fifth and twenty fifth...

 

[Red97]

It will be interesting to see dyno results of saws getting broken in. Not so much between first and fifth tank, but between fifth and twenty fifth...

Yessir, that was first heat cycle on the 660.

 

[Duane(Pa)]

You can almost feel it early on. I’m sure they all get gradually better to a peak somewhere along the line...

 

[huskihl]

Oh, so you just assume the husky is higher lol.

So much for me trying to be tricky

In your previous post you said 1st up was the clone. So I just figgered....

 

[Red97]

Ok, I have a couple more bones for you fellas to chew on...

 

[Red97]

2 different builds, both showing max hp. Only 1 difference. Didn't touch the cylinders, no degree wheel.

 

[mdavlee]

Ignition advance?

 

[Bigmac]

Bgd?

 

[Agent Smith]

Carbs?

 

[Terry Syd]

I'd also go with ignition advance. If so, what did the advance do to the power curve below peak HP?

 

[Red97]

Ignition advance?

Nope

Bgd?

Yep

Carbs?

Same