Question about OMC Cobra..with pics

[Challenger84]

I was wondering if this is something that needs to be addressed ASAP before getting in the water. I have a tear in the "exhaust tube"?
Here are the pictures

What is the REAL name of this part?
Thanks for looking
Any help and advice is appreciated!

 

[HT32BSX115]

Re: Question about OMC Cobra..with pics

Howdy,


It''s an exhaust bellows.

It won't hurt a thing to run it that way.

In Fact, you can remove it and run without it. (My 460 King Cobra ran for about 15 years without one)

It'll just be a little noisier without it and you'll get exhaust closer to the transom at idle.


You NEED to carefully inspect your main drive bellows though. If that one is leaking or torn, it'll cost ya!!!


Regards,


Rick

 

[howlnmad]

Re: Question about OMC Cobra..with pics

What Rick said. In fact, a new exhaust bellows will have slits cut in it from the factory.

 

[Challenger84]

Re: Question about OMC Cobra..with pics

okay I'll just leave that one alone for now then.
What about this main drive bellow?
Where can I find it and is it easy to replace?
I looked for it in the manual and it only shows me the exhaust bellows when I do a search.

I'm a visual learner.
If anyone has a picture of it and the location that would be great.

Thanks guys for the help.

 

[a70eliminator]

Re: Question about OMC Cobra..with pics

It's right above the exhaust bellow in you picture, if you tore the old exhaust bellows completely off and out of the way then you could see it.

 

[Don S]

Re: Question about OMC Cobra..with pics

There are only 2 bellows and your exhaust bellows is torn. The other bellows is the ujoint bellows. Of course if it goes bad, things get real expensive real fast.

 

[Challenger84]

Re: Question about OMC Cobra..with pics

Thanks for the heads up guys!
I'll take a look at it.
If it does need to be replaced would I have to remove the entire drive to replace it?
Does anyone have a link to a DIY video?

 

[Don S]

Re: Question about OMC Cobra..with pics

If it does need to be replaced would I have to remove the entire drive to replace it?

Yes, but it's not a hard job to pull the drive. It just looks that way. You remove the pin that holds the trim cylinders to the back of the drive, remove the 6 nuts holding the drive on and pull it backwards. It's off.

Might as well get used to it, the drive needs pulled yearly to grease the splines, ujoints, gimbal bearing and check the alignment.

Might as well check out ebay and buy a set of OEM service manuals for your engine and drive. Don't waste your money on aftermarket Seloc or Clymers. Unless you really need expensive knee pads.

 

[a70eliminator]

Re: Question about OMC Cobra..with pics

The nut off the bottom of the cav plate doesn't belong there, what is it holding? maybe just plugging a hole previously drilled for a whale tail or dole fin?

 

[Challenger84]

Re: Question about OMC Cobra..with pics

The nut off the bottom of the cav plate doesn't belong there, what is it holding? maybe just plugging a hole previously drilled for a whale tail or dole fin?

I have no clue what its doing there.
Good eye.
I'll check to see.

 

[Gary H NC]

Re: Question about OMC Cobra..with pics

The nut off the bottom of the cav plate doesn't belong there, what is it holding? maybe just plugging a hole previously drilled for a whale tail or dole fin?

It holds the lower on......should be one on each side.
I have seen them on a Cobra drive before.

Here is what the transom service kit looks like and what parts you get,
http://www.ebasicpower.com/pc/GLM21962/OMCTSK/Transom Service Kit, OMC Cobra.html

 

[a70eliminator]

Re: Question about OMC Cobra..with pics

I see now the cav. plate is actually just below and that is one of the several lower gearcase mounting bolts, it's not a nut at all, my bad.

 

[Challenger84]

Re: Question about OMC Cobra..with pics

Here is what the transom service kit looks like and what parts you get,
http://www.ebasicpower.com/pc/GLM21962/OMCTSK/Transom Service Kit, OMC Cobra.html

Great!
Thanks for the link!