Author Topic: 066 on a 064 question  (Read 825 times)

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Offline SDB777

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066 on a 064 question
« on: January 19, 2014, 04:32:29 pm »
I think, somewhere along the way, I heard tell that a 066/660 top end can be put on a 064...



Is this true?

What is the result if it is?




Scott (maybe not the right place for this one) B
Jonsered 2186
Jonsered 2094
Stihl MS250
Stihl 064
WoodMizer LT-28

www.slabsblanksandboards.com

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Offline roostersgt

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Re: 066 on a 064 question
« Reply #1 on: January 19, 2014, 07:40:37 pm »
I've heard the same thing, but I've also heard the 064 has better port timing and runs as well as a stock 066/660. If that is true, you're gaining nothing more than an additional 6cc. I've also heard you can drill out the holes on a 056Mag II and mount it to your 064/066 and make it a 99cc screamer. Ebay has a piston / cylinder for$89 as wee speak. My 064 is fresh, so I'll be passing on the 056 mod.
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Offline mdavlee .

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Re: 066 on a 064 question
« Reply #2 on: January 19, 2014, 08:12:14 pm »
You have to drill the cylinder base holes out for 6mm. I can't remember if there's anything else you have to do to it.

Offline gunnusmc03

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Re: 066 on a 064 question
« Reply #3 on: January 19, 2014, 09:13:04 pm »
You can bolt on the 066 cylinder but will need to slot the cylinder screws holes.

Offline blsnelling

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Re: 066 on a 064 question
« Reply #4 on: January 19, 2014, 10:09:02 pm »
Yes, a 066/660 topend can be installed on a 064.  As already mentioned, you have to slot the holes in the 066 cylinder base.  Use the 064 cylinder gasket as a template.  Enlarging the holes in the case to 6mm is a good idea, but is not required.  It's easy enough to do.

Offline roostersgt

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Re: 066 on a 064 question
« Reply #5 on: January 19, 2014, 11:19:30 pm »
Brad, do you know anything about the 056 Mag II conversion?
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Offline SDB777

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Re: 066 on a 064 question
« Reply #6 on: January 20, 2014, 08:37:31 am »
I've heard the same thing, but I've also heard the 064 has better port timing and runs as well as a stock 066/660. If that is true, you're gaining nothing more than an additional 6cc. I've also heard you can drill out the holes on a 056Mag II and mount it to your 064/066 and make it a 99cc screamer. Ebay has a piston / cylinder for$89 as wee speak. My 064 is fresh, so I'll be passing on the 056 mod.


The only thing I'm seeing on eBay is this:  >>>> LINK <<<<    and that is a pretty big difference in price.

But maybe I'm using the wrong 'search option' there?


I was looking at the specs @Bill's page, and I am having trouble with the math.  The 056M{56x38mm} and has a 93.4cc and the 064{52x40mm} and has a 85.0cc chamber size....how does it get to 99-ish cc?{am I supposed to use the 56mm bore and work with the 40mm stroke??}
And can you describe what a 'screamer' is(remember, I'm new and I don't know the 'lingo'), I have a basic knowledge of rpm's from spec sheets(but no tachometer to actually compare what I'm reading to what I 'hear' while running a saw). 
For that matter, I can only hope my newer saws are running to their 'top performance levels', I mean I know if they are cutting well-but could they do better without 'dying'!?!?!



My 064 is old and tired, I'd like to do something with it, it's not leaking fluids and I have got my initial investment out of it(three fold)....  After all, I have a J'red 2094 that is still stock-strong if I need to mill something BIG!


I can 'find' either top-end...
But which will be 'best'?  Last the longest for the cha-ching?  And finally, provide the most 'return' if I decide to part with the saw later?






Scott (virtual can-o-worms opened...sorry) B
Jonsered 2186
Jonsered 2094
Stihl MS250
Stihl 064
WoodMizer LT-28

www.slabsblanksandboards.com

Offline roostersgt

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Re: 066 on a 064 question
« Reply #7 on: January 20, 2014, 03:29:57 pm »
Looks like the 056 MAG II cylinder already sold. I'm not sure about how the Mag II gets to 99cc. I'm only putting out what I read on another site. One of the gtg guys mentioned having one. You're correct. The math doesn't add up as the 056 MAGII, of which only 70 were made, is only 93.4cc. I never questioned what I read. I was hoping Snelling would know more about it. He knows worlds more about saws and modding than I. I basically stick to factory specs. The one I saw was a used cylinder only and had a buy it now price of $89. Feeling kind of bad about the 056 information. I can't find the original posting and everything I've seen today points to it being a difficult, if not daunting task.

As far as what would work best and be trouble free, I'd probably go with a good used 066/064 top end and Meteor piston set up. Can't go wrong there. If you can't find anything suitable, I have a spare NOS Stihl OEM 064 piston/cylinder and ring set up I may be willing to part with.
You didn't win silver, you lost gold.

Offline roostersgt

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Re: 066 on a 064 question
« Reply #8 on: January 20, 2014, 04:21:50 pm »
Found the post, but no video was ever posted of the saw(s) mentioned. Starts with post #13.

com/community/threads/to-go-new-or-stay-old-skool.249224/

For some reason the link keeps changing from a-r-b-o-r-i-s-t-s-i-t-e to chainsawsite and the link dies. put a-r-b-o-r-i-s-t-s-i-t-e in front (minus hyphens) and it should take you there.
You didn't win silver, you lost gold.

Offline mdavlee .

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Re: 066 on a 064 question
« Reply #9 on: January 20, 2014, 05:05:50 pm »
Just get a new piston and have the 064 cylinder ported.

 

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