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Yamaha 175 stuck powerhead HELP

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ajgroos

New member
I am removing my powerhead on

I am removing my powerhead on an 88 175etxg so i can put a new piston in. I got all the bolts out but 4 of 6 of the long ones busted the head! I have torched the heck out of them and with my cherry picker on top i cant get it to budge! anyone else have this happen? were do i go from here? please any advise would be greatly appreciated.
 
"I'm not familiar with tha

"I'm not familiar with that motor, but are you sure you got ALL the bolts? On several occasions I have been frustrated and found later that there was another bolt or two that I had not seen."
 
THAT IS A VERY COMMON PROBLEM

THAT IS A VERY COMMON PROBLEM WITH 2.6L YAMAHAS. AND I WISH I COULD TELL U EXACTLY HOW TO FIX IT. THE ONLY THING I CAN SAY IS ALOT OF HEAT AND PRESSURE.
 
"If the bolts broke near the h

"If the bolts broke near the head then you will need to drill through the side of the exhaust adapter to sever the bolts within about 1" of the powerhead. Here is a picture of the two starboard rear bolts on a 225HP after such a proceedure:

http://www.monkeybutler.com/boat/yammie_teardown/small/IMG_4569.jpg"

Since I was replacing this adapter anyway I used a long shank carbide burr in a die grinder because it give easier access and makes quick work of it. If you use a drill and are careful you can aviod any water and exhaust passages and reuse the adapter.

The block will still be difficult to break free so here is a trick to "jack" the block off the midsection. There are two short bolts in the very rear of the powerhead. Loosen but leave these in place. Find a spacer that just fits betweeen the bolt and the midsection. In this case a 1/4" drive extension is shown:

http://www.monkeybutler.com/boat/yammie_teardown/small/IMG_4565.jpg"

Now, by backing out the bolt you will be able to generate considerable force to break the block free. Here is a photo of the block just beginning to seperate:

http://www.monkeybutler.com/boat/yammie_teardown/small/IMG_4555.jpg"


It is doable but when all is said and done that piston will seem like the least of your worries.

Good luck and let me know if you need any other help.


Steve P."
 
Thanks for all you help guys i

Thanks for all you help guys i finally got it off by drilling the bolts. WoW what a headache this project has been. got her all put back now and i hope to never have to do that again. Thanks again.
 
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