Drive couplers??

[Dman1991]

Ok drive couplers.... So before I pull my engine I wanted to get the new drive coupler here. Only problem is idk which one to get??? Mines a 1978 470. Does this drive coupler bolt on with the fly wheel bolts or does it have separate mounting holes and also what engines is it interchangable with??

I can't seem to find very much info at all on this topic I wanted a picture of one bolted to flywheel can't find one go figure

 

[Soulshine]

The coupler does bolt directly to the flywheel.

It should come with new bolts that usually have thread locker compound on them. If it doesn’t, buy them too. Don’t reuse the old ones.

OEM parts are preferable.

 

[Dman1991]

The one I found that is supposed to be for my boat. It says it bolts on with the crankshaft bolts.?


That boat in your thumbnail soulshine is awesome it's the bigger version of mine I have the 260 weekender i hope mine looks that nice on the water!!

 

[Soulshine]

Thanks.

I guess it’s possible that the bolts that hold the coupler on are the same as those that hold the flywheel to the crank shaft.

The two times I’ve done that job, I’d swear that they were a different set of bolts (much farther apart than the crank bolts), but I’ve been mistaken before.

Either way, adhere to the torque specs and most importantly make sure your alignment between the engine and drive is perfect before reinstalling the drive or you’ll be doing this again too soon.

There’s a tool for this and procedures are written up all over the web, including on this site I’m sure.

Good luck!

 

[Soulshine]

I think yours will look like this, and will indeed share the bolts that hold the flywheel on.

The lower image is more what I’m used to.

 

[Dman1991]

Yea that's exactly what I came up with thanks for the input.
And I was lucky enough the po had the original shop manual for the boat so if been going through the procedures on all of it.. My trade is mechanic but on cars lol never pulled a boat engine but it looks pretty simple and strait forward on this besides how the heck I'm going to hoist the engine ul

 

[Soulshine]

I had the same dilemma.

You don’t have to remove the engine from the boat to do this job.

I reached over the transom with an automotive engine hoist and lifted it enough to turn it 90 degrees, rested it on some blocking and put it back in place in no time.

 

[Dman1991]

You got a regular engine hoist to go up that high the top of my transom is sitting at 8 feet 6 inches off the ground??

I was thinking toblay wood across the gunnels to lift it a couple inches and spin it

 

[Soulshine]

It was a 22 footer on a trailer and it barely reached.

Your idea is exactly where I was headed before trying the hoist.

 

[Dman1991]

You think the gunnels on a searay 260 is strong enough to hold that 470 weighs probably 700lbs scary

 

[LiquidWrench]

If the boat has twins you will most definitely have to completely remove one engine to do it. I just went through this on my 260 a few months ago. Pulling the exhaust riser helps too. It's very tight. While you have it out, it's also worthwhile replacing the rear motor mounts as well. They are probably the reason the coupler failed. FWIW, the port engine is the easier one to get out so you don't have to disconnect the power steering. With the port engine out of the way the starboard engine can be turned sideways to do it. If you need to replace the water heater or fresh water tank now is the time to do that as well as the engines have to come out to have room.

 

[Dman1991]

Well then...
So tell me what did you use to pull the motor on ur 260 I'm thinking of building a 4x4 structure like a gantry. And yes defiantly replacing rear mounts. Does the outdrive have to come off to pull motor

 

[LiquidWrench]

Yes outdrive has to come off. You will also need an alignment tool when you put the engine back in. I had the advantage of being able to borrow a fork truck with a boom extension from a local marine repair place over a weekend. While I had the engine out I also replaced the cam seals on the port engine just as a preventative issue. Also another word of caution, be very careful with your shift interlock switch. I broke mine pulling the engine, fortunately I had a spare. If you have any questions as you get into it shoot me a PM and I'll help you out as much as I can.

 

[Dman1991]

Yes outdrive has to come off. You will also need an alignment tool when you put the engine back in. I had the advantage of being able to borrow a fork truck with a boom extension from a local marine repair place over a weekend. While I had the engine out I also replaced the cam seals on the port engine just as a preventative issue. Also another word of caution, be very careful with your shift interlock switch. I broke mine pulling the engine, fortunately I had a spare. If you have any questions as you get into it shoot me a PM and I'll help you out as much as I can.

Awesome thanks man I will definatly use that resource

How hard are the cam seals my engines have 700 hours on them if that matters