How to remove a frozen bolt

[bbn]

I have this 45hp outboard motor circa 1965. I need to open up the lower part but I can't get all the bolts out.



I only was able to remove 4 of the 8. Another problem is that the bolts are in a position that will not allow me to use a bolt extractor. How do I remove them?

Here is a picture of one of the stuck bolts:

[22y]

you have a couple of options:
1. Soak it overnight with WD40.
2. If its an all steel assembly you can freeze it with a can of freezing spray.
3. If there is no danger of combustion and its aluminum assembly you can heat it up with a butane burner.
4. if all things fail, drill out the bolt head and use an extractor on the thread.

[bbn]

Thanks but No. 4 is not an option because I would not be able to position the drill inline with the bolt head. I think I'll try the heating method. I've a cutting torch and that should do the trick. I'll of course use a cold flame.

Any suggestions on dealing with the loose allen head? I'm thinking I might grind down the next size allen key o maybe weld a regular hex bolt.

[22y]

space limitations forces me to use the tiktik method. Make a small notch where you may be able tap it to turn with a straight punch. tyaga-tyaga lang.

[bbn]

Thanks for reminding me. I've done that before in fact but its been many many many years since.

[hardworker]

Lagyan po ninyo ng brake fluid ng sasakyan sigurado pong tanggal po agad iyan kasi po ay palalabutin ang kalawang ng brake fluid.

[bbn]

Salamat bro. Ang totoo nito ay ginamit ko na ang pinaka magaling ... mekaniko na marunong . Umaandar na.

[Froi]

you can try using a compound leverage wrench

[fake_silhouette]

apply WD40 or kerosene (more hazardous and dangerous though)
better if its soaked

than use power handles