1998 140hp Suzuki compression question?

[Isaacm1986]

I am looking at a 1998 Suzuki 140hp motor for my boat. The marine shop selling it is asking $2200. It is a very clean motor. Starts and runs well in the dunk tank.

Now here is my concern. The compression range is 140-120. On four cylinders. I have always thought a more that 10psi range is not good. The marine mechanic at the shop is telling me that because this motor is a EFI controlled 2stroke, they came from the factory with different compression ratios per cylinder?

This sounds sketch to me, and looking for someone who can confirm or deny this.

Thanks.

 

[Isaacm1986]

Re: 1998 140hp Suzuki compression question?

does anyone have thoughts on this?

 

[Bosunsmate]

Re: 1998 140hp Suzuki compression question?

Were they all near 140psi and one down by 120 or were they all spread out?
Sounds like quackery to me as each headbolt/ con rod bolt would have a different torque spec

 

[Isaacm1986]

Re: 1998 140hp Suzuki compression question?

135,120,140,125. That is cylinders 1-4.

 

[JB]

Re: 1998 140hp Suzuki compression question?

I don't believe what your tech told you. I therefore recommend you scratch both the outboard and the tech. . .permanently.

 

[Isaacm1986]

Re: 1998 140hp Suzuki compression question?

Yea, he is not my tech. This is just at a local marine shop. Saw the add on Craigslist. I will never use these guys at all. Thanks for the help.

 

[WIMUSKY]

Re: 1998 140hp Suzuki compression question?

That tech is trying to help dump a motor.... Yep, stay away from that marine shop......

 

[Silvertip]

Re: 1998 140hp Suzuki compression question?

The number is 10% different. Not 10 PSI.