85cc 064 porting

[rocco490]

looked like right at ten seconds for the 7900 vs 8.25 for the 064. hows the 066/660 vs the 064 hybrids compare with 36 inch and bigger bars?

 

[Keith Gandy]

Send the 064 to Provencal , La. Please!

 

[sawmikaze]

looked like right at ten seconds for the 7900 vs 8.25 for the 064. hows the 066/660 vs the 064 hybrids compare with 36 inch and bigger bars?

Idk about all that but the 660 jason ported for me thumps the 064 i had..its not even close.

 

[jmssaws]

Looks like the 064 wins lol. J what is the rpm I should tune for on the 064.

14K?

Sent from my non internal combustion device.

I don't know yet.
Its fat there but it's a new p&r
I'll play with it after while but they have been happy around 14.5 but everyone is different.
It might 4 stroke past 16

 

[jmssaws]

That's a Beautiful saw, Nice built thread! What did you do to the muffler? I know you have been revisiting how much opening.

It has the factory opening opened up just to the deflector with a stock cover.
Tried a dp cover but it didn't like it.
Oem screen is in it

 

[paragonbuilder]

Nice job J,
I'm starting to think I need to find me an 064...


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[jmssaws]

Idk about all that but the 660 jason ported for me thumps the 064 i had..its not even close.

A 066 or a 064 hybrid with a decent cylinder will thump any 660 I've built.

Even with a good cylinder a 660 will never be as strong.

This one is a damn strong 85cc
Reminds me of my 066 with the angry feel.

 

[jmssaws]

looked like right at ten seconds for the 7900 vs 8.25 for the 064. hows the 066/660 vs the 064 hybrids compare with 36 inch and bigger bars?

066 and a hybrid are a wash,both stronger than a 660 don't matter what bar.

 

[jmssaws]

This saw has a almost stock muffler and on green rings has 185lbs of compression
020 from the key @102 123.5 76 and is a real good runner. Both the 7900 and 064 belong to Cr500 and what a nice pair of saws.
One of his was free because he used the buy 2 get one free deal.

 

[paragonbuilder]

This saw has a almost stock muffler and on green rings has 185lbs of compression
020 from the key @102 123.5 76 and is a real good runner. Both the 7900 and 064 belong to Cr500 and what a nice pair of saws.
One of his was free because he used the buy 2 get one free deal.

What other saw did you do for him?


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[CR500]

What other saw did you do for him?


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A 661 and hopefully a 461 coming up. Lol

Sent from my non internal combustion device.

 

[rocco490]

I didn't know the 660 was weaker than a 066 once there both modded I just figured the stock mufflers on the 660 was more restricted. What makes the 660 weaker?

 

[jmssaws]

What other saw did you do for him?


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The 7900 is his too
Did a 661 for him last year

 

[jmssaws]

I didn't know the 660 was weaker than a 066 once there both modded I just figured the stock mufflers on the 660 was more restricted. What makes the 660 weaker?

Case capacity and poor cylinders.
It makes a huge difference how good the cylinder is stock.
A good one and a bad one ported to the same numbers will run nothing alike

 

[RI Chevy]

Jason. I noticed in the video that it appeared to me that your chain on the 064 was loose. Do you always keep the chains sagging on the bar? Not a lot, but enough that I could notice. I usually adjust my chains a little tighter. Just trying to figure out if I am doing something wrong or not.

 

[jmssaws]

Jason. I noticed in the video that it appeared to me that your chain on the 064 was loose. Do you always keep the chains sagging on the bar? Not a lot, but enough that I could notice. I usually adjust my chains a little tighter. Just trying to figure out if I am doing something wrong or not.

It's made for a 10pin and would tighten up on the dolmar but not on the stihl.

 

[RI Chevy]

OK. Thanks. Just checking on myself. LOL

 

[jmssaws]

I was running it some with a 24" 8pin and had my 066 in the truck so I ran it too.
Both are at 14k

 

[jmssaws]

I just filed both but the 066 has the better chain

 

[RI Chevy]

Both awesome saws. Very close, but I think the 066 was just a tick faster. Maybe because it was broken in already.