compression for 720 gas

[Tim SD]

Can anyone tell me what the cylinder compression should be on a 720 gas tractor.Thank you in advance.
Tim

 

[gtx1967jewison]

depends on wear, just open throttle to w.o.t., check & if they are within 20% of each other you're fine.

 

[Ben Grimes]

per jd tractor data book:

gas is 6.11:1
all-fuel is 4.60:1
lpg is 8.00:1
diesel 16:1

posted all if there were any other compression questions for the 720 from any one else.

Ben

 

[gtx1967jewison]

ben he's not looking for ratio's, he wants the cylinder pressure in psi. 80, 100, 150 etc.

 

[Tim SD]

Yes I"m looking to test pressure in psi per cyliders thank you.

 

[Ben Grimes]

I misunderstood the question, sorry

 

[Anonymous-0]

I&T manuel 720 Gas 129 psi