seized, broken bolt Boston - Page 2 - SailNet Community
LinkBack Thread Tools
post #11 of 14 Old 04-12-2013
Join Date: Apr 2006
Posts: 12,346
Thanks: 6
Thanked 181 Times in 178 Posts
Rep Power: 13
Re: seized, broken bolt Boston

In the 1970's I broke off a distributor bolt and the shop welded a nut on top of it and spun it out, just the way the porsche mechanic suggests. This is routine for a good machine shop or real mechanic, as opposed to some greasemonkey.

I wouldn't try acid, that will eat aluminum and concentrated nitric is sold for cleaning stainless--it generally doesn't care about acids. Also, tends to eat the folks working with it.

Assuming you have tried Kroil or PBlaster? A real corrosion buster, not just WD40? If not, try them first. Soak, vibrate, repeat, the damned stuff is NOT WD-40 it works.

And failing that or the machine shop, i'd suggest freezing them to break the corrosion. A slush of alcohol and chipped dry ice, packed around and allowed to thoroughly freeze the parts, then removed and allowed to come back to room temp (with a heat lamp or torch to make that faster, as long as you don't ruin the temper). Or a CO2 extinguisher, or bottle of CO2 from a gas shop. Two or three good hard freeze cycles will usually break anything free, no danger of detempering metal or starting fires, just some patience and care not to get frostbite from contact.

Loctite also makes a freeze spray in a can now, but I'm not sure how effective that would be compared to really brutal freezing on the parts.
hellosailor is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
post #12 of 14 Old 04-12-2013
Captain Obvious
Sal Paradise's Avatar
Join Date: Sep 2012
Location: New York
Posts: 1,381
Thanks: 21
Thanked 59 Times in 59 Posts
Rep Power: 5
Re: seized, broken bolt Boston

Originally Posted by benesailor View Post
i have used the same exact process as downeast describes with great success

Me too, except that I used a helicoil kit afterwards ($40) and it worked perfectly and was successful. I would say to buy the very best titanium bits and work slowly from a small diameter up. Its easy.
Sal Paradise is offline  
Quote Quick Reply Share with Facebook
post #13 of 14 Old 04-12-2013
Join Date: Jul 2007
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Re: seized, broken bolt Boston

I have had sucess using a Dremel Toll with small carbide gutting bits. I find there is much more control than using a drill. it can be slow but effective
sailingtime is offline  
Quote Quick Reply Share with Facebook
post #14 of 14 Old 04-12-2013
Senior Member
bljones's Avatar
Join Date: Oct 2008
Location: South Coast Ontario
Posts: 8,484
Thanks: 35
Thanked 93 Times in 82 Posts
Rep Power: 10
Re: seized, broken bolt Boston

six SS bolts- that is going to cost a crapload of Dremel bits.

I gotta ask- how the hell does one snap SIX bolt heads? At some point you gotta say to yourself, "Okay, maybe i gotta dial down the torque, or find a better way, or something.'

It's 5 o'clock somewhere:

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
bljones is offline  
Quote Quick Reply Share with Facebook

Quick Reply

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
Seized seacock sgjfrods General Discussion (sailing related) 25 07-02-2012 08:00 AM
Broken bow Chock Bolt Brucerobs2 Gear & Maintenance 2 05-10-2010 11:37 AM
Yanmar seized Islandflyr Diesel 8 10-26-2009 01:22 AM
seacock seized bluwateronly Gear & Maintenance 13 07-09-2008 08:23 PM
Seized turnbuckles zoom555 Gear & Maintenance 2 05-01-2008 11:55 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome