what grade should engine support bolts be ?
03-09-2007 | 02:02 PM
#21
Frank's Marine Service
Joined: Sep 2002
Posts: 11,959
Likes: 142
From: Elkton, MD
In all my years doing this, 99% of all the motor mount bolts I've ever seen are steel. The zinc chromate plated helps with the corrosion. Also, most of the offshore mount thru bolts have always been fine thread steel, not coarse.
03-09-2007 | 03:48 PM
#23
Emerald Coast of Florida
Joined: May 2004
Posts: 623
Likes: 0
From: Navarre FL
Another thing everyone should be very concerned about is there are a lot of fake hardware manufacturers out there.
I'm in the military equipment business and virtually every fastener we use is grade 8. A number of years ago a lot of fake grade 8 stuff was being made in Taiwan.
ed
I'm in the military equipment business and virtually every fastener we use is grade 8. A number of years ago a lot of fake grade 8 stuff was being made in Taiwan.
ed
03-09-2007 | 04:13 PM
#26
Registered
Joined: Jul 2002
Posts: 2,867
Likes: 3
From: Waterford,MI
There should be businesses that specialize in fasteners in any decent size city. Here in the Detroit area I can think of about 6 right off the top of my head. They are much cheaper than ARP. Get the grade 8 and you'll be fine.
03-09-2007 | 04:19 PM
#27
Frank's Marine Service
Joined: Sep 2002
Posts: 11,959
Likes: 142
From: Elkton, MD
03-09-2007 | 11:02 PM
#29
Registered
Joined: Dec 2003
Posts: 1,991
Likes: 13
From: Socialist Republic of Washington State
Something I have noticed on aftermarket truck suspensions they use Grade 5 bolts. But they are very large diameter, 7/8ths etc.
