badly stuck powerhead 92 115 erude

[gokart83]

OK I def have all the nuts/bolts out. Have soaked in PB Blaster for 2 weeks and I can get a quater inch between the block and mid plate at the front but the back 2 studs wont budge. I straped a chain around the bubble exhaust to get a straiter pull, let the weight of the boat and trailer hang all day on winch, heated around studs w/torch and hammered via a 1x4 at the bottom of the exhaust and a large sledge hammer. Still no luck. What is the trick here. What am I missing?

 

[Joe Reeves]

Re: badly stuck powerhead 92 115 erude

I assume that the torch was a hand held propane torch with a hot blowtorch tip? If not, try that.

Using a large (LARGE) screwdriver of pry of your choice, place the tip under the threaded stud(s)..... naturally a small bolt, spacer, or something should be resting on the ledge in order to obtain a proper prying action. Then hit that pry downwards.

You may have already tried this but if not, give it a shot.

 

[gokart83]

Re: badly stuck powerhead 92 115 erude

yea tried that, I heated it with oxy/act toned down and heated very slowly. Even tried shocking the studs by spraying a small stream of cold water on them. Im beginning to think about just repowering if i can find something afforadble

 

[Joe Reeves]

Re: badly stuck powerhead 92 115 erude

I've encountered that jammed rear stud scenario more times than I'd care to mention. Eventually with the powerhead simply resting (no upwards lift applied), and hitting the pry as mentioned, it always loosened BUT it was a time killing project. I avoided the oxy/act scenario as well you know aluminum melts rather quickly, and I can be slightly careless at times . Give the propane blowtorch tip thing a try, can't hurt, won't hurt the aluminum even at full blast, might just so the trick.

 

[gokart83]

Re: badly stuck powerhead 92 115 erude

I assume you mean putting a rest under the pry bar in the gap at the rear for leverage. Ill try that and hope it pops. Thanks. i assume there are no c-clips at the crank or anything funky like that. I do feel better someone else has had this problem and im not missing something.

 

[dazk14]

Re: badly stuck powerhead 92 115 erude

Without a pic I not sure exactly what you are looking at...

I've always had good luck using fairly wide carpenters chisels. It starts thin enough to penetrate the thickness of the gasket, yet has a good wedging effect.

If you can penetrate on either side of the stuck stud, it will give a very linear force.

 

[boobie]

Re: badly stuck powerhead 92 115 erude

Dumb question, is the gear case off of it ?

 

[GatorMike]

Re: badly stuck powerhead 92 115 erude

I have nothing to add, just a little encouragement. I had the same problem with mine, worked on it for 2 days and just as I was about to give up it came loose. To this day I don't know what I did to break it loose, just probably came out of the bind it was in.

 

[gokart83]

Re: badly stuck powerhead 92 115 erude

The lower unit is still on, Why? should it be? A customer of mine told me to heat the stud and touch the stud with candle wax. The theory is that the heat will draw the wax up the stud much better than the PB blaster. He said they used to do this on machines at the sugar plant on the savannah river here. Any thoughts on this? Sounds pretty logicial to me and I cant think of a downside other than cleaning alittle wax up. Sorry for the delays. Only have gotton to work on her every 1-2 weeks due to work and cooking butts for local fundraisers. Im planning on getting some good time in tomorrow tho.

 

[54fleetwin]

Re: badly stuck powerhead 92 115 erude

I have heard of the candle wax but I have not yet used it.

 

[wilde1j]

Re: badly stuck powerhead 92 115 erude

The drive shaft may be rusted and locked into the bottom of the crank, which would prevent the powerhead from coming up. I would see if you can drop the LU.

 

[gokart83]

Re: badly stuck powerhead 92 115 erude

Thanks Wilde1j but Im pretty sure its not that. When I pull at the top of the crank as the book says, I get a 1/2" or so at the front tapering down to the back where the studs are. The crank being stuck would cause the whole thing to not move since its toward the front. i did question some sort of c-clip on the crank but most here have told me no on that one. I did read a thread on the same prob but different motor and someone asked him the same question. He said he had removed the lower unit and it was answered and I quote "Well there went the easy solution". I was confused with that answer as to me I dont see how it could help or hurt unless the crank was stuck, which that would be the answer. Ill keep yall updated on the progress and again, thanks for the help.

 

[gokart83]

Re: badly stuck powerhead 92 115 erude

just for future readers, I replaced with a used 140. Took no mercy on the old motor after robbing the good parts and found that the bottom left exhaust deflector and lower block got real hot and melted causing the studs to stick. Had to use a cold chisle and a BFH to get it to break apart. Oh well, off to the scrape aluminum pile with it.