661 R&D

[jmssaws]

Putting number 1 on it now

 

[jmssaws]

Can't remember who wanted a piston wash pic but here you go. Cylinder number 2

 

[Moparmyway]

Can't remember who wanted a piston wash pic but here you go. Cylinder number 2 View attachment 37911

Twas I Sir, and thank you !

 

[jmssaws]

I don't know if it's stronger or not
Same bar and chain as yesterday
It don't sound as strong.

 

[RI Chevy]

Still sounds good!

 

[Keith Gandy]

I don't know if it's stronger or not
Same bar and chain as yesterday
It don't sound as strong.

Holding great rpm

 

[jmssaws]

Friend of mine said #1 is stronger than #2
He ran both today but I think #2 is
Need to time them

 

[Keith Gandy]

Friend of mine said #1 is stronger than #2
He ran both today but I think #2 is
Need to time them

How far r u gonna take that intake down?

 

[jmssaws]

How far r u gonna take that intake down?

Not sure what I'll do.
More intake and exhaust duration will help.

 

[jmssaws]

Thoughts? It can happen

 

[CR500]

no way lol

 

[Canadian farm boy]

Thoughts? It can happenView attachment 37927

Is this your saw J or a customers?

 

[Redfin]

Haha, thats great. Figure out how to take the Mtron off the 661. Then figure how to use it on a 660.

 

[Red97]

Can't remember who wanted a piston wash pic but here you go. Cylinder number 2 View attachment 37911

Thank you.

 

[jmssaws]

Thank you.

What dose that wash tell you?

 

[jmssaws]

Haha, thats great. Figure out how to take the Mtron off the 661. Then figure how to use it on a 660.

If I can get the coil bolted down its a peice of cake

 

[Red97]

What dose that wash tell you?

My semi uneducated guess.

Would be to try and angle the ex side transfers just a bit less. Not aimed at the intake as hard.

Looks to be favoring the flywheel side just a bit, but I think that is due to the cooling effect of the flywheel.

Now these ^^ statements are just my opinion and have 0 merit pertaining to the 661. Just some ideas I have come up with through reading/research, but haven't pulled enough jugs to see if it really makes any difference.

Just food for thought.

 

[paragonbuilder]

Thoughts? It can happenView attachment 37927

Pretty sure you will find a way!

 

[jmssaws]

Is this your saw J or a customers?

Customers
It's the only big case saw here that's together.

 

[jmssaws]

The awesome thing about the transfers is they feed from one spot so a water hose can give you a good idea of how they are working. They are offset and make a perfect swirl. Water don't flow like air but you can see exactly how there aimed.

The wash looks pretty good I think but I don't know a lot about what it should look like. It will carbon the pto side first because of the flywheel.
It's only got 1 tank on it so I'm surprised there's much wash at all.
Entry angle isn't changed much but opening angle is.