eriklane
ArboristSite Operative
Front of piston was all scarred up, rings fried, rear of piston and cyl fine. Almost seems the cyl wasn't straight? Definitely pointing forward. $150 down the drain.
Just roached a new Meteor cylinder on my Husky 395, ticked off.
Help Support Arborist Forum:
William Balaska
Addicted to ArboristSite
Well. Maybe you didn't install it correctly or had a vacuum leak or just plain overheated it. Let's see it as those are quality parts.
eriklane
ArboristSite Operative
Joodas, not much to do wrong, *shrug*...base gasket, 4 bolts tight...carb high side 1.5 turns out, typical setup, using Amsoil 100:1 oil which is formulated for any 2 cycle, and I used it in all my saws, no problem...
Stihlbillie
Hillbilly Deluxe
Holy **** 100:1!?!?!
eriklane
ArboristSite Operative
Yeah, it's 100:1 but it's designed for 2 strokes. Like I say, have used it for 2 years no problem...
Stihlbillie
Hillbilly Deluxe
Have you used it before to break in an engine?
100:1 way too lean for a big saw like that. That ratio is fine in a water cooled outboard, not a high performance saw.
Besides the 100:1 mix
what caused the saw to require a new top end? Likely the 100:1 caused the failure, but I'd still go over the saw to make sure you weren't dealing with multiple problems.
Besides the 100:1 mix
I lived not far from Amsoil's HQ. They make good oil but to say 100:1 is good for ANY two stroke is maddening. I really feel sorry for folks who put their faith into this recommendation and end up with broken engines.
I had a casual conversation with someone in their marketing department not long ago. When I brought this up I was told pointedly that I was wrong. I politely disengaged from the conversation.
I had a casual conversation with someone in their marketing department not long ago. When I brought this up I was told pointedly that I was wrong. I politely disengaged from the conversation.
William Balaska
Addicted to ArboristSite
Well now we have an idea what the problem may be.
William Balaska
Addicted to ArboristSite
I use amsoil at 40 to 1. Epa doesn't care about you.
Never. They always blame someone/something else.
D
Deleted member 117362
Guest
Did your saw look dry inside? If so, not enough oil.
I usually run a 50:1 oil at a 42:1 ratio for breaking in. 100:1 is almost straight gassing it..
eh, they state that you could go "as lean as 100:1", not that it's safe to run 100:1 in all 2-cycles. That would be just plain crazy.
Yes they changed the wording a few years ago, they also made the 100:1 print real small on the bottles.
Old bottle.
New bottle.
I don't care what the bottles state, I wouldn't go with less than 50:1 - even at that ratio there is barely any excess oil coming out the muffler on numerous tanks full of fuel.
Back in the days (90's) when 25:1 was standard there was always oil dripping out the muffler of my Sachs-Dolmar 105 - might as well be the reason why she is still around today!
Sorry to hear about Your misfortune, but I agree with the others - 100:1 is too thin a mix, especially for break-in on a big cc saw.
Out of 4 different 2-stroke oil brands I used these past few years only the Makita 50:1 2-stroke oil I currently use, and only have a 1 Liter bottle of, actually makes its way out of the muffler - and it exits the muffler black as the darkest night making me believe it is flushing out carbon left behind by the other oils.
I am seriously considering to stock up on this particular oil!
I run my saws at 50:1, and my weed-whackers at 40:1.
If I have to sidestep to oils other than know-to-me Dolmar & Makita (rarely), I run 32:1 in all equipment.
Back in the days (90's) when 25:1 was standard there was always oil dripping out the muffler of my Sachs-Dolmar 105 - might as well be the reason why she is still around today!
Sorry to hear about Your misfortune, but I agree with the others - 100:1 is too thin a mix, especially for break-in on a big cc saw.
Out of 4 different 2-stroke oil brands I used these past few years only the Makita 50:1 2-stroke oil I currently use, and only have a 1 Liter bottle of, actually makes its way out of the muffler - and it exits the muffler black as the darkest night making me believe it is flushing out carbon left behind by the other oils.
I am seriously considering to stock up on this particular oil!
I run my saws at 50:1, and my weed-whackers at 40:1.
If I have to sidestep to oils other than know-to-me Dolmar & Makita (rarely), I run 32:1 in all equipment.
Similar threads
