1975 OMC 165hp engine - Information Wanted Please!

[brianmerc]

A friend of mine just bought a 1975 Cruisers boat. He says it needs a lot of work and he plans on fixing it up to get it running. It has a I/O engine. But, he doesn't know what kind of engine it has, Mercruiser, Volvo, etc. Does anyone know anything about this kind of boat or the engine it may have. I personally know nothing about it.<br /><br />Quick question: With this type of I/O engine, can it be fired up out of the water? Or do you need to have a hose for water hooked up to it? Also, as for gasoline, does it have to be mixed with oil? Like an outboard? I have an outboard engine myself and I dont know if outboards work the same way as I/O's. <br /><br />If anyone can give me some input that would be great!!<br /><br />Thanks a lot!<br /><br />brianmerc

 

[crazy charlie]

Re: 1975 OMC 165hp engine - Information Wanted Please!

To figure out what engine is in it you will need to post # of cyls,ser#s,any names on the outdrive or ser #s,even the color of the od may give a clue.Most if not all outdrives require water at the outdrive vents so dont try to crank it without water.A marine engine is like a car engine that you dont need to mix oil with the gas.Keep posting!!! Charlie

 

[brianmerc]

Re: 1975 OMC 165hp engine - Information Wanted Please!

I'm going tomorrow to check out the boat. I haven't seen it yet, so when I do see it I'll write down a serial number off the engine.<br /><br />I'll leave a post tomorrow afternoon with all the info. I'll bring my camera to take pictures too.<br /><br />Thanks for the fast reply!<br /><br />brianmerc

 

[brianmerc]

Re: 1975 OMC 165hp engine - Information Wanted Please!

Okay, checked out the boat and took some pictures... See the pictures at http://www.jonsbackhoeservice.com/boat <br /><br />I found out it is a OMC 165hp stern drive engine. Does anyone know where I can find a manual for this engine?<br /><br />Also, go to that website I posted above and look at the last picture of the outdrive. See where that blue masking tape is? Under that tape, there is a hole that leads to (I'm assuming) somewhere inside the outdrive. I am think it is exhaust maybe? Also, do you think this engine has hydrolics that raises the outdrive in and out of the water?? I'm pretty sure it does, but I don't see any hydrolic looking parts. Take a look and tell me what you think. <br /><br />Thanks for any input you may have!<br /><br />brianmerc

 

[Bondo]

Re: 1975 OMC 165hp engine - Information Wanted Please!

I see No Good News for your Bud........<br />The Best is it's a Chevy 250cid I6 motor... Plenty of those around for parts......<br /><br />The Outdrive is an other matter......<br />That's an Old Junk OMC... <br />NO Hyd. Tilt on that 1... It has a Ele.Mechanical Tilting Mechanizen.... NO Trim... The outdrive can Only be Tilted when Not under Power... The Tilting Power Unit is on the Lower Port side of the outdrive, 1/2 outside the boat,+ 1/2 inside of the boat......<br />Yes, the Hole under the tape is the Exhaust Relief hole to vent the Exhaust while running at Displacement speeds, or setting still......

 

[brianmerc]

Re: 1975 OMC 165hp engine - Information Wanted Please!

Thanks for the reply bondo! See the pictures at http://www.jonsbackhoeservice.com/boat <br /><br />So does anyone think there is hope for this engine?<br /><br />brianmerc

 

[Boomyal]

Re: 1975 OMC 165hp engine - Information Wanted Please!

No way to know without starting at the beginning. <br /> <br />The outdrive, is all that bondo said, not because it is an OMC stringer, but because it is an electric shift model. However there are still a ton of those still out on the water. It does not look like it has had extensive saltwater use. If so, that is a plus.<br /><br />On the motor, pull the plugs, use a breaker bar to see if the enging turns freely. Then charge up the battery and do a compression check. Then you need to check fuel system, ignition etc.<br />Don't run the motor, even shortly, with the outdrive partially up or without water applied.<br /><br />From the looks of the pics, I hope your friend didn't pay much. That outdrive should be checked by a professional before you would try to use it. Nothing much for a novice to do except the basic. It looks like the tilt motor and or tilt clutch is not working either.<br /><br />I used to own a gun shop on Arroyo Parkway between 1977 and 1984. Can you still breath down there?

 

[Badger99]

Re: 1975 OMC 165hp engine - Information Wanted Please!

 

[brianmerc]

Re: 1975 OMC 165hp engine - Information Wanted Please!

Hey Boomyal,<br /><br />Thanks for the input. I think my buddy is going to take it to a professional to have him look at it. No, he didn't pay too much for the boat. I think the price was about right. With a little work, I think he can get some good years out of it.<br /><br />Arroyo Parkway... YES we can still breathe. Ha ha! The pollution isn't that bad. Actually, Pasadena is one of the nicer areas of Southern California, with big huge houses and a lot of history. I wouldn't move anywhere else in the US. We have everything here... lakes, oceans, mountains for snowboarding, deserts, hot girls, etc. It's like Disneyland. Theres always something to do here.<br /><br />Now I'm curious, where are you living now?<br /><br />Brian