Coupler 1 John Zip

8122 nailed it, had a .002 mushroom bout dead center of the keyway all the way around. NO clue how it got there as I never touched the shaft with a hammer. Took some emory cloth to it and smoothed it out, coupler slid on like butter, almost slid it too far and got lucky that I got it perfect just before it cooled down. Took it for a test drive and ran like a champ, though on the way back I hit a sheet, yes a full 8ft sheet, of ply wood sitting about 6 inches under the water. Was doing 35 and looked like a grenade went off behind the boat. Luckily only damage was the left speedo fin, which was off anyways.

John,
Like Eric said, give it another try especially since you got the "NO" on spending the $$$! Measure to see what's going on. Many here have done it and some not very mechanically inclined!

that sucker is almost as much as a damn ARE kit. however i did come across this one: http://www.getaprop.com/content-product_info/product_id-6959/borg_warner_split_coupling_4_b.html

anyone see why that wouldn't work????

8122 - I'm beginning to think the same thing. The damn thing is so tight it takes me over an hour using the socket trick to pop it off. I get barely a half turn out of each bolt/nut, so tomorrow I'm gonna put a 6 pack next to me crank up the stereo and do what I picture hell is probably like for us mechanically inclined individuals. Then I'm gonna mic the shaft and I'm betting I get a .001-.002 variance right towards the middle of the keyway. On the first go I thought I had a key issue so I filed that baby down a tad to make it slide like butter. Then again if I can get a consensus that the above walter coupler will work I'm gonna say screw it throw the current heat to fit coupler in the trash and sslide that bad boy on there.

Might have a little egg in it, Pete?

failure #2 I give up. Wifey says no go on a $375 ARE shaft so looks like it goes back to storage for a few months.

No clue what I was doing wrong. This time 550 for 2hrs and iced the hell out of the shaft. Physically ran the 30 feet from the oven to the boat and still only got it about half way before it seized up.

Yeah, I would put a big ice bag on it that you can toss off right before you place the key and fit the coupler. Even with the shaft acting as a heat sink, it might help a little. Good Luck!

in the factories we always got dry ice to shrink the parts, didn't seem that the freezer did the trick. the part should stay frozen longer to help get the assembly together.

you can evenly heat with a propane torch, pull it from the oven and give her a little more, be wise dont dis color it

Even heat is needed. I would think a torch would warp the flange - the last thing you would want to happen.

Hey Pete, instead of using the oven, can one heat it red hot with a torch and then put it on the shaft, or is that much heat mess with the couplers integrity. Just curious for future reference

PITA, isn't it!

Next shaft for me with be double taper!