Porting - higher octane needed?

[KG441c]

Does an increase in oil ratio to 32:1 slow down
the igniting process?

 

[Ron660]

No need 93 is fine.

It's the 101 that you really don't need.

Thanks

 

[Hedgerow]

Does an increase in oil ratio to 32:1 slow down
the igniting process?

That's a good question... Much of it does not burn..

 

[nmurph]

So the 87 octane burns quicker than the higher octanes?

It depends on how you are defining quicker- lower octane will ignite more readily, but the speed of the burn has more to do with the specific gravity of the fuel.

 

[KG441c]

It depends on how you are defining quicker- lower octane will ignite more readily, but the speed of the urn has more to do with the specific gravity of the fuel.

Well I guess thats what I was wondering if the oil ratio is gonna slow combustion then a lower octane fuel would be more effective with a ratio of 32to1 over 50to1?

 

[mdavlee]

It depends on the oil. Oils with a lower flash point seem to burn more completely than some of the thicker bike oils.

 

[old-cat]

The more pow you can put in, the more power you get out of it. Oil don't have the pow that gas does, so the more oil you put in the less power you get out . If you don't put enough oil in , you get a BIG poof!

 

[KG441c]

It depends on the oil. Oils with a lower flash point seem to burn more completely than some of the thicker bike oils.

Whats ur opinion on H1r and Motul 800t?

 

[Marshy]

so advancing the timing on some stock saws will make up for the porting being off from the factory?

I have 87 non ethanol about 4 miles from my house but had been driving 65 miles with cans to get 93 non ethanol

Your crazy! Go buy the 87 and use it. Unless your getting preignition or ping then use the lowest grade you can. And since you have 87 non E I'd be tryin it for sure!

 

[mdavlee]

Whats ur opinion on H1r and Motul 800t?

Both are good oils. I prefer maxima K2 for my use. H1r bothers my sinuses. I'll be sneezing ad going on after a couple tanks. Motul is good just more expensive. I'm using the 800 right now. Went through about 5 gallons of mix with it so far.

 

[luckydad]

Great info here guys !! Thanks.


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[XSKIER]

Advancing the timing should put more torque lower in the midrange power

If you grind out all of your low end torque by race porting, you can get some of it back by using high octane race gas.

 

[Mastermind]

If you grind out all of your low end torque by race porting, you can get some of it back by using high octane race gas.

Absolutely not true.

 

[KenJax Tree]

Absolutely not true.

Imagine that


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[XSKIER]

Absolutely not true.

Truth? There's no room for that in this thread.

 

[Hedgerow]

If you grind out all of your low end torque by race porting, you can get some of it back by using high octane race gas.

That would be the exact opposite of factual...
Sooooo....
Not sure what to say after that...

 

[Hedgerow]

Truth? There's no room for that in this thread.

No sweat...
We expect it...

 

[KG441c]

My question still would be now that we determined that 87 burns most efficiently in a saw without turning this into an oil tread is, which oil burns the most efficiently in a saw and at what ratio and protects the engine

 

[Hedgerow]

My question still would be now that we determined that 87 burns most efficiently in a saw without turning this into an oil tread is, which oil burns the most efficiently in a saw and at what ratio and protects the engine

Knock yourself out... Cause more oil raises power up to about 16:1...
So however much you wanna pay for is good...

 

[cgraham1]

Truth? There's no room for that in this thread.

Now we just need Brush Ape to chime in, and this thread will be complete!