strokers,bigbores,octane and oil ratios

[masterblaster]

what oil ratio do most of you that run power motors run. I do fine with 50/1 in my ported 701 but have been runnin 40/1 in the stroker.I hear that 30/1 can make more power but I dont see how that is possible more lube or not?

as far as octane goes I keep hearing guys say their motor makes more power on race fuel than pump but does ok on pump,I dont get this either on a motor with fixed timing. I can see it on a obd2 system motor with knock sensoring pulling timing. but how does a motor thats setup with timing and comp to at least accept pump fuel that is hotter burning run better with no changes other than race fuel? I can see maybe oxygenated race fuel,but av gas or 100 or even 110 leaded?
I always thought the octane was a safty factor that allowed for more timing,comp,porting to make more power,but i dont get the reverse factor here?

 

[ATS_Scott]

Race gas does not make more power, it just allows it if you take advantage of the higher octane, or like you mentioned oxygenated fuels will provide a little more power.

We pre-mix at 40:1 for everything. bigbore strokers, and stock 650's

 

[QuickMick]

Once again Props to the guy that made this Oil Ratio Debate Video!!!

http://www.xtranormal.com/watch?e=20090813193106611

 

[wsuwrhr]

Just to add....burning oxy fuels in a two stroke can be a dangerous game if not attended to precisely, and have even less room for error.

Brian

 

[AdamOntario]

32:1 castor 927 (per Art) 4mm 803cc jetworks pump gas (91 octane)

 

[Daralekt]

50:1 amsoil

 

[Lucaumpits]

32/1 quicksilver SS 827cc

 

[masterblaster]

i know builders dont wont their motors coming back seized,but it seems like 32/1 is alot of oil.especailly with a good oil like amsoil or the like

 

[WILKEY]

50:1

 

[seatsR4toilets]

Anybody know where to get Klotz Benol reasonably in Florida? Can't seem to find a dealer to save my life.

 

[masterblaster]

klotz and reasonable dont even go in the same sentence...that stuff is ta ta priced

 

[wsuwrhr]

For my personal engines, in my book, oil is alot cheaper than pistons and crank bearings.

Brian

i know builders dont wont their motors coming back seized,but it seems like 32/1 is alot of oil.especailly with a good oil like amsoil or the like

 

[SJ Thumpa]

32/1 quicksilver SS 827cc

32:1 castor 927 (per Art) 4mm 803cc jetworks pump gas (91 octane)

Two respectable builders, same pump gas/oil ratio's!...I'd adhere.

 

[masterblaster]

At what ratio does the extra oil make the fuel burn slower,thusly decrease overall performance? How is it amsoil at 50/1 works fine and no wear is found within motor parts at this ratio.
It is hard to feel the diff between running the same oil at 32,40 or 50 to 1 as far as power,but riding a smoke bomb is not hard to tell at all.

 

[GIL]

True, it may be a little harder to get carbs dialed in on MS109, BUT, once u are dialed in, elevation and weather have much LESS effect of carbs due to the fact that u are providing your own oxygen in your fuel. I know several people running MS109 and they NEVER touch their screws.

 

[Roo]

32/1 quicksilver SS 827cc

2nd.

Let your engine builder tell you... Team Scream says 32:1, 32:1 Quicksilver it is.

-Andrew