What is the range of Cylinder Compression

[hookersinker]

Need to know the Compression range on a 2hp Evinrude Outboard motor Model# E2RCNE year 1982

 

[Hooty]

Re: What is the range of Cylinder Compression

This is just a guess but I'm gonna say about 100psi. <br /><br />c/6<br /><br />Hooty

 

[hookersinker]

Re: What is the range of Cylinder Compression

really need to have the exact numbers for it<br />

 

[hookersinker]

Re: What is the range of Cylinder Compression

Does anybody know how you can find out or what it is for this motor. your help is appreciated<br />Thanks!!

 

[Rex]

Re: What is the range of Cylinder Compression

Just tell us what it has.<br />Rex

 

[wilde1j]

Re: What is the range of Cylinder Compression

There is no "number". Most gasoline engines will run if compression is over 60 psig. Usually, with larger motors one expects ~ 90 to 150 psig and readings should not vary more than ~ 10% between cylinders.<br /><br />Shop manuals do not normally specify any reading.

 

[ob]

Re: What is the range of Cylinder Compression

Expect similar numbers with small outboards as well.Did some searches on 2 to 5 hp outboards and 100 to 120 psi is typical in a healthy motor.As Wildeone points out there is no specific compression figure but rather an acceptable range.