Motor got hot smelled electrical burrning

[HT32BSX115]

Re: Motor got hot smelled electrical burning

Re: Motor got hot smelled electrical burning

Yes, you're right. It IS crazy........but that's the way it is with a lot of models of OMC (and other obsolete) engines and drives.


The "After-Market" supports a LOT of engine/drive combinations......some better than others.


For example, OMC offered the 460 only from 87-89. They didn't sell a lot of because they were expensive. Now that there's no OMC........ Osco, Barr, GLM, etc, don't see any profit in making manifolds for them at all. So they don't.

There's a few people that are making (hand made) stainless steel jacketed headers, and there's a few making adapter plates to adapt 454 BBC manifolds to the Ford heads.

There's even someone that is actually making 460 aluminum heads with a BBC exhaust port pattern!

But it's just not worth it to do it because you have a fortune in it after you're done.


Now that you have a new engine, it may be worth it to switch.

Find a donor boat with a cracked block and a Mercruiser V-6/Alpha setup and swap it all over and use your new engine.

Your Cobra is worth something too. I removed all my Cobra stuff and sold it piece by piece. When it was all said and done, I recovered almost $3300! ($1400 for the drive alone)

Another way might be to scrounge a gimbal mount and get a new SEI drive. that might be harder because you will need to get all the other "stuff" like the trim pump, brackets, (Mercury)manifolds, etc.....


This is why a LOT of us on here (when asked) always try to steer people away from old OMC powered boats.......

 

[acuraguy81]

Re: Motor got hot smelled electrical burrning

I know i had head of people staying away from omc but did not know y.

PS can I use mercruiser manifolds on my motor and will it still all line up and fit ok?

 

[HT32BSX115]

Re: Motor got hot smelled electrical burrning

I know i had head of people staying away from omc but did not know y.

PS can I use mercruiser manifolds on my motor and will it still all line up and fit ok?

That might work if you want to go to thru-hull exhaust. They're not going to line up with your current Y-pipe. You might be able to adapt some rubber exhaust hose and piece together something that will work. It most likely WON'T be a bolt on operation.

I know i had head of people staying away from omc but did not know y.

Well, this is why. Most of us on here usually tell anyone that asks to stay away from OMC and a few other obsolete engine/drives etc just for this reason.

Then there's a parade of OMC apologists that jump on and tell how great they are.

Well...... they WERE great in their day. (My 460 King Cobra ran well for more than 20 years with little or no maintenance!!)

But now, their day is pretty much past. I for one, am not interested in having to roam the junkyards looking for parts to keep my boat going......I just want to launch it and GO!!



Regards,


Rick

 

[acuraguy81]

Re: Motor got hot smelled electrical burrning

thanks to all will update when motor gets here

 

[full stringer]

Re: Motor got hot smelled electrical burrning

absolutely need to figure out what indeed caused the overheating in the first place my guess was exhaust logs or risers clogged also running w/o a thermostat is horrible on a marine engine and the manifolds will not pressurize equally one side may be hot the other normal etc.. always use a thermostat no matter what you hear.

 

[acuraguy81]

Re: Motor got hot smelled electrical burrning

From what I have gathered the thermostat caused the issue by being all rusty and nasty and maybee not opening. I knwo the impeller is good I did take it apart and check it. The only thing left would be??????????????????