Which Coupler Do I Need?

[greg82255]

Hello,

I am building a 383 over in the Non-repair I/O section and I want to get a new coupler along with he new engine. I have too many other questions going on in my build thread so I wanted to start this one and ask just about the coupler. The original engine was a 1986 Merc 260/Alpha One. I'm not sure of the engine serial #. It's a 1pc rear main seal. Can someone tell me the correct part # for the coupler I need? Or if you need more information let me know and I'll get it.

 

[Bondo]

Re: Which Coupler Do I Need?

Ayuh,.... Which coupler did ya take off,..??
Did it bolt to the crankshaft, or flywheel...

I'd think ya need the standard triangular flywheel mounted coupler...

 

[greg82255]

Re: Which Coupler Do I Need?

Ayuh,.... Which coupler did ya take off,..??
Did it bolt to the crankshaft, or flywheel...

I'd think ya need the standard triangular flywheel mounted coupler...

The one I took off was the triangular coupler that bolts to the flywheel. It just looks like there are a few different types of triangular couplers so I wasn't sure which one was the right one.

 

[Bondo]

Re: Which Coupler Do I Need?

The one I took off was the triangular coupler that bolts to the flywheel. It just looks like there are a few different types of triangular couplers so I wasn't sure which one was the right one.

Ayuh,... You want 1, Just like the 1 that came off....

What's wrong with the current coupler,..??

 

[greg82255]

Re: Which Coupler Do I Need?

Ayuh,... You want 1, Just like the 1 that came off....

What's wrong with the current coupler,..??

Nothing is really wrong with it - it just from 1986 and has about 800 hours on it. I'm building a 383 that is going to be pushing 400-420 hp and I want to reduce the number of things that could go wrong by overpowering the alpha drive. Do couplers wear out? Or are they in great shape until you hit a rock and they get spun?

 

[Bondo]

Re: Which Coupler Do I Need?

Do couplers wear out? Or are they in great shape until you hit a rock and they get spun?

Ayuh,... Couplers wear out from a lack of Grease,....
They Blow, from Bad alignment...

The tops of the spline teeth are Flat, 'n 'bout an 1/8" wide... You can See if it's worn, the teeth will be pointy...

If yer's passes Inspection, I'd run it....

Hittin' a rock is more apt to shear a tooth, or shaft in the drive....

 

[greg82255]

Re: Which Coupler Do I Need?

When I pulled the drive over the winter and put in the alignment bar, the alignment was spot on. I just went out and looked at the coupler and the splines actually look really good. They're flat and just about 1/8" wide. I guess I'll go ahead and run it. I guess it'll save me some $ too. Thanks Bondo