Outboard powerhead in I/O

[jddenham]

This is a late 60's 88HP Johnson V-4 in a factory configured I/O setup. I am parting this boat out and was wondering if it is interchangeable with any outboard powerheads.

 

[F_R]

Re: Outboard powerhead in I/O

It shares a lot of stuff with the 90hp outboard, but not directly interchangable. Biggest difference is the carburetor and intake. I know one thing, you can't use an outboard powerhead gasket on it, It will cook it in minutes. Don't ask how I know.

 

[Dhadley]

Re: Outboard powerhead in I/O

Ahhhh... the old DU series. Boy does that bring back some old nightmares......errr...memories. Is it in an old Evinrude or Johnson boat?

 

[jddenham]

Re: Outboard powerhead in I/O

It's a johnson SeaSport Tri-hull boat.

 

[tashasdaddy]

Re: Outboard powerhead in I/O

i remember them well, coolest thing on the water at the time.

 

[Dhadley]

Re: Outboard powerhead in I/O

Look closer. That's not a standard tri-hull. It's a gull wing design. It was way ahead of it's time.

 

[jddenham]

Re: Outboard powerhead in I/O

I was going to part it out. Would it be worth anything to a collector / restorer? I'm about 5 hours from Seattle on the Wa/ID border, so not exactly in the best location for an eBay auction.

It has a really nice Johnson built I-beam trailer that I wanted to use for motorcycles and ATV's.

 

[jddenham]

Re: Outboard powerhead in I/O

Engine tag:

 

[Scaaty]

Re: Outboard powerhead in I/O

I'd toss it at Ebay with a reserve of what ya want out of it. It has some collector value to someone here in Puget Sound. Lewiston not that far, but ya gotta have a good trailer and tires/bearings or no one will bid.

 

[jddenham]

Re: Outboard powerhead in I/O

I was going to stick the motor and outdrive on ebay, so I did a compression test. I couldn't get the starter to fully engage and turn the motor over. I tried using the rope around the flywheel, and it seemed like it went through the stroke. I only got 80psi on each cylinder. That seems really low. What do you guys think? The last time he used the boat it ran good according to him.

Thanks

 

[F_R]

Re: Outboard powerhead in I/O

You probably are not getting a good test with the rope.

 

[jddenham]

Re: Outboard powerhead in I/O

I'm going to pull the starter and clean it out. It might come back to life. At least the reading were even across the cylinders!

 

[jddenham]

Re: Outboard powerhead in I/O

Motor and stringer outdrive are going on ebay today