Chainsaw Repair
Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Stihl => Topic started by: SDB777 on January 19, 2014, 04:32:29 pm
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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
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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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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.
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You can bolt on the 066 cylinder but will need to slot the cylinder screws holes.
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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.
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Brad, do you know anything about the 056 Mag II conversion?
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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 <<<< (http://www.ebay.com/itm/stihl-056-ported-cylinder-piston-bearing-rings-hot-race-saw-NICE-OEM-/261375183776?pt=US_Chainsaws&hash=item3cdb2ccba0) 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
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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.
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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.
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Just get a new piston and have the 064 cylinder ported.
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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.
Think I just watched a video on YouTube done by you....same username?
https://www.youtube.com/watch?v=pN3w2e5UI0M (https://www.youtube.com/watch?v=pN3w2e5UI0M)
Scott (very nice) B
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Spent almost an hour before being called to dinner by the wife, and was not able to get the muffler off this saw. Even sprayed the WD40 onto them rusted pieces! Re sprayed them and left it sitting so that the WD might make its way to whatever is holding them in place?
First guess is this saw has never been apart?
If they don't let go, any tips to keep from breaking stuff?
Scott (things gotta get easier) B
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heat
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Run the saw for a minute and then break the bolts loose if you don't want to use a small torch to heat it up.
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Thanks for the tip. I will give that a go tomorrow morning...it will be to late to do it after work tonite.
Scott (chainsawin' in the dark is bad) B
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Heat is definitely your friend when working with saws. It makes getting the bearings and cranks into and out of the cases manageable. If you dont want to use a torch, you can use a heat gun, hair dryer or even a flood lamp.
Enjoyed reading through your site. Great looking blanks and was impressed with your acrylic work too.
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Heat is definitely your friend when working with saws. It makes getting the bearings and cranks into and out of the cases manageable. If you dont want to use a torch, you can use a heat gun, hair dryer or even a flood lamp.
Enjoyed reading through your site. Great looking blanks and was impressed with your acrylic work too.
Thanks, was wondering what everyone used when the saw was disassembled for any length of time as far as heat goes(not like you could start it up and let it 'self-generate' heat).
And thanks for looking through the website....sometimes a fella gets lucky finding local timber. The Acrylics is all the wife, she has the timing and eye for color combos!
Scott (seems it cold out there this mornin') B
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If it were me I would just replace the piston (if needed) and rings. The 64 is a great saw and I don't know if you can feel a power difference by adding the 66 top end. So I don't think its worth the extra work. I have owned both BTW. So I'm not just making assumptions.
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Has anyone used any of the mako cylinder kits? Anyone done any port work on the mako kit? 4 years ago I moved the base screws out & opened them up to 6mm. Cut 10-15 cord a year with the saw & then the aftermarket piston gave up the ghost, so I am ready for a different top end & cylinder.