sunfish
Fish Head
Your saws will run better (make more power) on 87-91 octane.
Porting - higher octane needed?
- Thread starter Ron660
- Start date
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sunfish
Fish Head
I'm not a Chevy fan at all, but you are right!
sunfish
Fish Head
Old technology, but one of the old classics, better than a 426 hemi in many ways!
Ron660
Addicted to ArboristSite
My Stihl 660 manual states the following on fuel: "Use mid-grade unleaded gasoline with a minimum octane rating of 89. If the octane rating of the mid-grade gasoline in your area is lower, use premium unleaded fuel. Fuel with a lower octane rating may increase engine temperatures. This, in turn, increases the risk of piston seizure and damage to the engine." I would think German and/or USA engineers have this figured out. Just like my co-worker stated, a saw with 150psi would benefit from a 89-91 octane fuel. I do agree with Mastermind though on the short-stroke engine of chainsaws compared to other "longer-stroke" engines.
Mastermind
Work Saw Specialist
What does that Stihl manual say about increasing the static compression pressure by 30%????
lol
lol
"May cause bloating, intestinal cramping, and involuntary anal leakage."
Ron660
Addicted to ArboristSite
You're the Mastermind on that one. If you've used 87 octane in ported saws and the performance was better I can't dispute that. I have no experience with ported saws. I'll take your work on that over my manual.
Mastermind
Work Saw Specialist
I've also see it cause PSA....
Ron660
Addicted to ArboristSite
Since I don't have access to non-E 87 octane, I still have a choice of non-E 91 or 93 octane. And I'll keep my ratio at 32:1 with Motul 800.
Thanks for everyones input....especially the ones with experience with ported saws.
Thanks for everyones input....especially the ones with experience with ported saws.
Hedgerow
HACK
Yuk....
Chebby's...
sunfish
Fish Head
The newest Corvette engine is their only masterpiece.....
Mastermind
Work Saw Specialist
Once again......Matt has shown that he is a bigot.
Ron660
Addicted to ArboristSite
I was surprised my wife's 2013 Denali has a 6.2L engine and the Corvette also has a 6.2L. I'm sure the Corvette engine is more specialized. I'm glad my wife doesn't have far to bring our daughter to School and the grocery store. It only gets 13 MPG. When I get my 660 back from being ported, it'll probably get less than that.
Hedgerow
HACK
Once again......Matt has shown that he is a bigot.
Hedgerow
HACK
The newest Corvette engine is their only masterpiece.....
Was that the one that fell in the sink hole??
nmurph
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The newest Corvette engine is their only masterpiece.....
And it only took them 50+yrs to perfect it.
How will a ported saw affect the gas mileage of a SUV?
Ron660
Addicted to ArboristSite
I'll need more $$ for my saw fuel and less $$ for the wife's gas guzzler. Lol
Ron660
Addicted to ArboristSite
I'm glad all that was settled. Think I need a drink.
Mastermind
Work Saw Specialist
Hey......I have two MS362C-Ms here right now....looks like a perfect opportunity for a build thread.
I'll try my level best to have one for Sunday. Mom's 85th birthday party is happening on Saturday......so that day is reserved.
I'll try my level best to have one for Sunday. Mom's 85th birthday party is happening on Saturday......so that day is reserved.
Ron660
Addicted to ArboristSite
I told you I was right!
