Need help from the oldschool 2 stroke experts

[Kenny_McCormic]

We recently inherited a Mall tool model 10 48inch 110cc chainsaw(ran after sitting 10 years with noting but a gas tank valve cleaning, fired up on the second pull, NOW THATS WHAT I CALL RELIABLE). Its supposed to be run on a 12:1 mix using 30 weight oil, what would be a safe mix using modern 2 stroke oil? We tested it with 32:1 as its what we had on hand. This thing sounds like authority, and I would really like to keep it going for another 60 years.

 

[Russ2251]

Its supposed to be run on a 12:1 mix using 30 weight oil, what would be a safe mix using modern 2 stroke oil? We tested it with 32:1

One of my Clinton (c. 1964) engines uses an 11:1 mix and runs fine on 32:1.
Just be sure to use an oil that is specifically 32:1 and not the 'multimix' types. The oil I recommend is Honda HP2.

 

[Kenny_McCormic]

Why not the multimix type?

 

[Russ2251]

Why not the multimix type?

Some oil manufactures say not to go above a certain mix ratio which tells me that there is some critical point where oil loses its ability to properly lubricate.
An example of this is Lawn-Boy oil which for decades was used for 32:1 mix in mowers. With their new snowthrowers, they say to use this same oil at 50:1 mix. Yet it's the same oil that came out in '70's.
What's changed if not the oil?
Piston ported engines (Lawn-Boy/Toro snowthrowers) run somewhat cooler than reed engines and it is known that the hotter an engine runs the more oil it needs.
Your chain saw uses reed induction for needed higher RPM and therefore hits hotter running temperatures increasing the need for more oil.
Why take the chance. A seized 2 cycle can rarely be rescued. Been there, done that.

 

[Kenny_McCormic]

So a simple TC-W3 oil would not be a good idea? Im pretty sure its all grandpa ever ran it on. Has mad amounts of compression still, strongest intake suction I have ever heard.

 

[Russ2251]

TC-W3 was developed for water cooled (that's what the 'W' stands for) and low performance engines and is generally considered a marine oil.
The Honda oil is a high performance oil.
Does your saw look similar to attached pic?

 

[Kenny_McCormic]

No model 10, 2 man saw. http://www.acresinternet.com/cscc.n...bc678d266aa3321088256af50017862c?OpenDocument Looks like the first one with different handle on the engine.

 

[Russ2251]

I strongly recommend you store it away in a dry area (sealed heavy duty poly-bag with silica gel) and don't do anything to it including showing it to your friends. This saw is worth BIG money. Just forget that you have it.
I restore antique engines and have seen a lot of weird stuff but never anything even close to that. If you need to do some cutting, go to the big box stores and buy a cheapie saw.
If the right collector were to appraise it, the 1st thing he does is check to see if it is original (like paint).
I envy you....
PS. See my thread on antique kart engines. http://www.diygokarts.com/vb/showthread.php?t=981&highlight=antique+kart

 

[Kenny_McCormic]

How much is BIG? Factory paint but most is gone now. Chainsaws make sawdust this thing makes woodchips. Chain is about as wide as my pinky and long as my thumb up to the knuckle. It will see a pretty dentle life as it always has because there arent many trees that big anymore. I dont think you can buy something this big anymore, the closest I could come to one of these would be a dirt bike engine with its gearbox bolted to a custom made bar. Prepare to drool or whatever you do when you see something like this.

 

[Kenny_McCormic]

Nameplate

MASSIVE BAR, for comparison the red motor is a Tecumseh 5hp

Front of motor

Top view

Crap pic of my thump compared to the chain

will get it out in the sun and take some more weather permitting.

 

[Russ2251]

How much is BIG?

In the hundreds, but need to find the right buyer.

Factory paint but most is gone now.

Doesn't matter. As soon as it's repainted it will lose about 1/3 value.

Chainsaws make sawdust this thing makes woodchips. Chain is about as wide as my pinky and long as my thumb up to the knuckle.

Unlikely chain is available any more.

I dont think you can buy something this big anymore

Husqvarna and Stihl make some big ones in the 60 inch range and are pretty much made out of cheese. Sell new for about $1600. I bid $300 on one that was seized and lost when outbid by $200.
I repeat what I posted earlier...put it away and forget it exists.
You'll be up the creek if something breaks.

 

[Kenny_McCormic]

What do you mean by "pretty much made out of cheese. "?

 

[Russ2251]

What do you mean by "pretty much made out of cheese. "?

Nice way of saying CRAP.

 

[Kenny_McCormic]

Ah, we have a bigger older stihl saw in the 20 inch range, usually works alright but the old McCulloch in the same size outruns it plus its heavier, just drop the mac on a log and pull the trigger, saw does all the work.