2nd Gen Ram Tech 1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

Exhaust Manifold Bolt Size

Thread Tools
 
Search this Thread
 
Old Mar 10, 2013 | 10:04 AM
  #1  
Arborist87's Avatar
Arborist87
Thread Starter
|
Amateur
Joined: Feb 2013
Posts: 40
Likes: 0
From: Pennsylvania
Default Exhaust Manifold Bolt Size

Hello, I am in the middle of swapping out my heads and in the process my manifold to head bolts broke, all of them. I guess its a good thing I bought brand new heads. Anyway, I can not find the specs on the bolts I need in order to put my exhaust manifolds back on. So can anyone please tell me the size of the bolts I need? I know I need 6 of them.

BTW I have a 2000 Ram 3500 5.9 V8 360
 
Reply
Old Mar 10, 2013 | 10:12 AM
  #2  
HeyYou's Avatar
HeyYou
Administrator
Veteran: Air Force
Community Favorite
15 Year Member
Community Builder
Joined: Apr 2010
Posts: 87,399
Likes: 4,213
From: Clayton MI
Default

5/16 x 18 by 1 inch long

Six per side.
 
Reply
Old Mar 10, 2013 | 10:15 AM
  #3  
Arborist87's Avatar
Arborist87
Thread Starter
|
Amateur
Joined: Feb 2013
Posts: 40
Likes: 0
From: Pennsylvania
Default

1"? My exhaust manifolds are about 1" thick. Can you double check that please?
 
Reply
Old Mar 10, 2013 | 10:22 AM
  #4  
HeyYou's Avatar
HeyYou
Administrator
Veteran: Air Force
Community Favorite
15 Year Member
Community Builder
Joined: Apr 2010
Posts: 87,399
Likes: 4,213
From: Clayton MI
Default

Have a look at your manifolds...... looking at the parts manual, it appears there are two different sizes? (center two bolts shorter than four on the ends....)
 
Reply
Old Mar 10, 2013 | 10:24 AM
  #5  
Arborist87's Avatar
Arborist87
Thread Starter
|
Amateur
Joined: Feb 2013
Posts: 40
Likes: 0
From: Pennsylvania
Default

Yes that is true
 
Reply
Old Mar 10, 2013 | 10:25 AM
  #6  
redneck_ram's Avatar
redneck_ram
Champion
Joined: Nov 2009
Posts: 4,081
Likes: 1
From: Rochester, NH
Default

stock bolts, for stock manifolds are about 2.5-3" long. if youre staying with the stockers just take your manifold to the hardware store and get a bolt that has threads sticking out the other end 3/4-1"
 
Reply
Old Mar 10, 2013 | 10:28 AM
  #7  
HeyYou's Avatar
HeyYou
Administrator
Veteran: Air Force
Community Favorite
15 Year Member
Community Builder
Joined: Apr 2010
Posts: 87,399
Likes: 4,213
From: Clayton MI
Default

Ok, short ones: STUD, .312-18/.312-24x2.25 P/N 06034643 (need a total of four)

Long ones: SCREW AND WASHER, Hex Head, .312-18x3.125 P/N 06034806 (need total of eight)
 
Reply
Old Mar 10, 2013 | 10:37 AM
  #8  
Arborist87's Avatar
Arborist87
Thread Starter
|
Amateur
Joined: Feb 2013
Posts: 40
Likes: 0
From: Pennsylvania
Default

so at a hardware store I would need to get 5/16"-18 thread correct and 2 1/4" long and 3" long?

Sorry for being a pain
 
Reply
Old Mar 10, 2013 | 10:41 AM
  #9  
HeyYou's Avatar
HeyYou
Administrator
Veteran: Air Force
Community Favorite
15 Year Member
Community Builder
Joined: Apr 2010
Posts: 87,399
Likes: 4,213
From: Clayton MI
Default

I think so.... But, the longer ones are 3 and an eighth.
 
Reply
Old Mar 10, 2013 | 10:50 AM
  #10  
redneck_ram's Avatar
redneck_ram
Champion
Joined: Nov 2009
Posts: 4,081
Likes: 1
From: Rochester, NH
Default

Originally Posted by Arborist87
so at a hardware store I would need to get 5/16"-18 thread correct and 2 1/4" long and 3" long?

Sorry for being a pain
no, the 2 1/4" bolts, are actually studs, and are only needed to be about 1.5" ill go out and confirm. ill come back and report soon.
 
Reply



All times are GMT -4. The time now is 08:52 AM.