JD G LP

[jmducks]

I am pullin a JD G LP in the 6500 -7500 class. How much comp. in psi do i want to get the best power and lug? What would the comp. ratio be also? How many psi is to much before you loose low end torque?

 

[730-LP]

A 730 LP John Deere from the factory is around 8.5 to 1.I pull a G that is around 13 to 1 and run raceing fuel [110 octane] or aviation fuel [120 octane] that pulls fine. LP octane rating is 110 to 120. Keep the cylinder pressure under 200# to 210# if you want it to live.,The cam grind has a lot to do with low end torque. hope this helps

 

[jmducks]

What would the ratio be at 200-210 psi? What hp would i be at with 200 psi about?