From the factory and on replacement kits they use stainless bolts on M-151 exhaust manifolds. These have a reputation of breaking. In the past people thought it was due to corrosion or dissimilar metals. I had written an article a long while back when I found the problem was that the soft stainless bolts were galling the threads and therefor would not come out no matter what kind of penetrant you used on them. I always recommended replacing those bolts with regular grade 5 steel bolts. Well, some listened and more flamed me. Made no difference to me since I get paid buy the hour. Here is a really good video that is much better at showing and describing the stainless problem. Keep this in mind when you want to replace any hardware with stainless just to keep it from rusting.
https://www.youtube.com/watch?v=HC4KiulYs68
Use of stainless steel bolts
Moderators: rickf, raymond, Mr. Recovery
Use of stainless steel bolts
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
Re: Use of stainless steel bolts
Good knowledge.... as always!
Jim Peterson
SGM, 31B Retired 2015
1961 M151 -Sold
1974 M151A2, Working It!
SGM, 31B Retired 2015
1961 M151 -Sold
1974 M151A2, Working It!
-
- Brigadier General
- Posts: 2083
- Joined: July 20th, 2009, 11:49 pm
- Location: Va. Beach & NC Outer Banks
Re: Use of stainless steel bolts
Seeing is believing
1976 M151A2 4 Color Cammo Mutt, aquired August 09
1976 or 7? M151A2 "Miss Sandy" Driver, aquired May 2010
Former owner M151A2 "Miss Saigon" Vietnam Rescue Sold Sept 09
Fond appreciation for the M151 Breed!!
1976 or 7? M151A2 "Miss Sandy" Driver, aquired May 2010
Former owner M151A2 "Miss Saigon" Vietnam Rescue Sold Sept 09
Fond appreciation for the M151 Breed!!
Re: Use of stainless steel bolts
I have seen many, many times but I just could not convey that when I wrote my article.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone