What's on your bench?

[Tor R]

A bit of work on the 2 throttle rod bends or renew the roller is the way i go on that full throttle thing Tor...You will lose the flex link when you dog the saw in if you make the trigger solid I feel. Just my way of looking at it .

those parts are almost new.
Problem I many times see is that the flex link is to soft, you dont get full throttle on some of them.
I'm not done yet, when it's dry I'll loose up one of the side and shave a tad distance.

 

[laslabjohn]

Picked this 650 up for a little of nothing, maybe 5 tanks through her. The cylinder cleaned up perfect. The question is do I go with the 650 cylinder or the 660.

 

[67L36Driver]

Picked this 650 up for a little of nothing, maybe 5 tanks through her. The cylinder cleaned up perfect. The question is do I go with the 650 cylinder or the 660. View attachment 31097 View attachment 31098

Those are problematic. After you pay for a 650 piston from a Stihl dealer its cost effective to just use a Farmertec 660 top end.

 

[laslabjohn]

I priced a piston. 49.00 but I have a 6y0 top end. So will go that route

 

[Mastermind]

The 650 is a 064 28th flippy caps, more weight, and a high exhaust. Interesting saws....

 

[laslabjohn]

The numbers on this one with deleted base the squish is at 18, 98-132-82

 

[Mastermind]

I think I have a new oem piston. If you wanna try the 650 jug.....

If not, I'll gladly take it off your hands.

 

[Brewz]

its cost effective to just use a Farmertec 660 top end.

Keep it OEM and origional!
If the timing is 98/122/82 and not 98/132/98 then its gunna run great

is that 132* transfer height correct?

 

[laslabjohn]

Yes sir I have checked it 4 times.

 

[laslabjohn]

I also noticed how big the uppers are. They are large with a steep angle towards the intake. I will shoot a photo.

 

[Brewz]

I was measuring my 066/660 cylinders transfers looking in the spark plug hole and getting figures around 122*
When I look in the exhaust port, I noticed the intake side is angled up and actually starts to open at about 118*

If you can raise them it will help but I am no expert..... still learing

 

[laslabjohn]

Here's a shot

 

[paragonbuilder]

Eric dropped a tree on it.

It's his 262. The Moobs one we both cut with.

That's right. I forgot he was sending it to you.


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[Brewz]

Mate, that thing has been ported

 

[paragonbuilder]

The numbers on this one with deleted base the squish is at 18, 98-132-82

That is a ton of blow down! Is the stroke the same as an 064?


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[laslabjohn]

Mate, that thing has been ported

That's where I started cleaning the casting marks haven't finished the lowers yet.

 

[laslabjohn]

That is a ton of blow down! Is the stroke the same as an 064?


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I went back using the ring in the cylinder, that randy recommended. 98-127-82

 

[laslabjohn]

I was measuring my 066/660 cylinders transfers looking in the spark plug hole and getting figures around 122*
When I look in the exhaust port, I noticed the intake side is angled up and actually starts to open at about 118*

If you can raise them it will help but I am no expert..... still learing

This one does the same, I could only see the front edge through plug hole.

 

[Brewz]

Yeah, You need to look through the exhaust to see where it really opens.
My 066 cylinders start at 118 and transition through to 122

 

[Time's Standing Stihl]

What a pain in the a$$