Question about 1995 EVINRUDE 115HP OUTBOARD

[Nate W]

I need a motor for my 1989 18' Procraft 1780V. I found a 1995 115HP evinrude that has good compression in all holes except #4, it only has 25 LBS. I would like to know if this will be enough motor for my boat and if this is a common problem with this engine. I have not seen the engine in person yet but I'm kinda thinking head gasket. What would be a fair price for this engine?

Thanks for any replies and help.I'm a noob so let me know if this is in the wrong forum or something, Very good site too.

 

[HighTrim]

Re: Question about 1995 EVINRUDE 115HP OUTBOARD

Welcome to iboats.

It would have to be a heck of a deal, especially if I was not able to pull the heads and have a look see. Very likely not a head gasket issue alone.

 

[Dhadley]

Re: Question about 1995 EVINRUDE 115HP OUTBOARD

Especially if it's a 1995 115 looper. They don't have head gaskets....

 

[Nate W]

Re: Question about 1995 EVINRUDE 115HP OUTBOARD

I had no idea they didn't have head gaskets.What could cause there to be low compression in one hole?

What is a looper

 

[Dhadley]

Re: Question about 1995 EVINRUDE 115HP OUTBOARD

A 90* crossflow does have head gaskets. The 60* looper V4s have O rings. If you get the model number we can tell which you have.

 

[Nate W]

Re: Question about 1995 EVINRUDE 115HP OUTBOARD

The only # he gave me is the serial # O3832478.It's not much help but it's all I got.

 

[HighTrim]

Re: Question about 1995 EVINRUDE 115HP OUTBOARD

Dhadley will be able to explain it much better than myself, but to put it simply, the looper is the newer design.

The crossflows hava a wedge shape on the top of the pistons per se. The incoming mixture gets deflected by that wedge upwards and pushes the exhaust gasses out.

A looper on the other hand achieves the same thing without the wedge. It uses ports to flow the new mixture to the top of the head, in a "loop" you might say. They are a bit more fuel economical since the pistons are lighter and they have a more efficient fuel combustion chamber.