john deere 60

I have a ol 60 that I pull farm stock, has high compression pistons and that's bout it, my question is what octane of gas will benefit it the most ?
 
Depends on what "high compression "
means. Have you run a compression
check on it? . See what it is and go
from there. A lot of the factory
increased compression was a big
improvement over stock: but: not
really high enough to need to spend on
high dollar 105 plus octane fuel. For
instance: stock may be 90-110# and
"high compression " 150-160. (Just
random numbers: not a JD expert by no
means) . If it will run without any
predetonation rattle on pump 91
octane: there is no reason to spend
$12 / gallon for 115.
 
I vote with MMFan55 on 91 off the pump. To much octane lengthens the burn past the point of optimum. Best as stated is enough to prevent pre-ignition. To much octane can loose you top end Hp, but "maybe" a small gain on the bottom end.
 
I run 91 octane pump gas with ethanol with a fuel stabilizer in my pulling tractors. Tractors pull as go as the guys using racing fuel and
out pull them at times.
 

If they are the standard run of the mill replacement M&W type pistons, they are about 7:1....not over 7.2:1...

The 975 RPM MUST be INCREASED to make it come alive...a high Perf. cam and much head work will wake it up...( IF the Comp is RAISED to something more realistic...maybe 10 or 12:1 ).
 

If they are the standard run of the mill replacement M&W type pistons, they are about 7:1....not over 7.2:1...

The 975 RPM MUST be INCREASED to make it come alive...a high Perf. cam and much head work will wake it up...( IF the Comp is RAISED to something more realistic...maybe 10 or 12:1 ).

Hmmm..I believe Ray has a 7" Block for these now....
 

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