Silicone in head bolt holes - how to remove?

Go down

Silicone in head bolt holes - how to remove?

Post  75truck on April 7th 2015, 11:01 pm

Taking apart a new to me 429 motor and as I removed the head bolts I noticed that some of them were installed with silicone on the threads.

Thinking that when this goes back together that torquing the heads with silicone in them would not be so good.

My solution is to take an old head bolt and cut 4 vertical slots in the threads - thread the bolt into the head bolt holes to clean the dried silicone.

Anyone have a different solution for this silicone removal?

Bob
Tucson

75truck

Posts : 97
Join date : 2015-03-26

View user profile

Back to top Go down

Re: Silicone in head bolt holes - how to remove?

Post  rmcomprandy on April 8th 2015, 12:32 am

75truck wrote:Taking apart a new to me 429 motor and as I removed the head bolts I noticed that some of them were installed with silicone on the threads.

Thinking that when this goes back together that torquing the heads with silicone in them would not be so good.

My solution is to take an old head bolt and cut 4 vertical slots in the threads - thread the bolt into the head bolt holes to clean the dried silicone.

Anyone have a different solution for this silicone removal?

Bob
Tucson

Brake Clean and a compressed air pistol will work just fine.

rmcomprandy

Posts : 5174
Join date : 2008-12-02
Location : Roseville, Michigan

View user profile http://www.rmcompetition.com

Back to top Go down

Re: Silicone in head bolt holes - how to remove?

Post  gt350hr on April 8th 2015, 12:45 pm

+1 Barkecleaner and compressed air. Works fast and like a charm.

gt350hr

Posts : 475
Join date : 2014-08-20
Location : Anaheim , CA

View user profile

Back to top Go down

Re: Silicone in head bolt holes - how to remove?

Post  dfree383 on April 8th 2015, 2:56 pm

Gas curls that stuff up fast too.
avatar
dfree383
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 14188
Join date : 2009-07-09
Location : Home Wif Da Wife.....

View user profile

Back to top Go down

Re: Silicone in head bolt holes - how to remove?

Post  D. Sea on April 9th 2015, 8:17 am

All of the above and clean the threads with a tap.
avatar
D. Sea

Posts : 2767
Join date : 2008-12-02
Age : 49
Location : Kentucky

View user profile

Back to top Go down

I came up with this!

Post  75truck on April 13th 2015, 4:07 pm



My need to be innovative brought me to this.  I actually got the idea from Oreilly Auto Parts. - they have a rental tool set that has thread chasers
and I noticed the vertical slits in the thread chaser to clean the threads.  So I just modified an extra head bolt to do the trick.  Used a Dremel cutoff blade to cut the slits.

Thanks guys and the brake clean worked with it also.

Bob
Tucson

75truck

Posts : 97
Join date : 2015-03-26

View user profile

Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum