View Full Version : Exhaust manifold questions???
dbuechler
06-15-2008, 08:48 PM
Does any one know a machine shop that welds and machine exhaust manifolds? Or has any one ever had it done before? I have some ports that don't look good and need some repair. Or can anyone know where I can get a new exhaust manifold for a RED LINE 351 FW 1990
eagle1
06-17-2008, 11:28 PM
Have you called redline in Lewiston. I think they have some on the shelf.
Eagle1
chucks electric
06-21-2008, 09:53 AM
hello, replace never repair. GLM, BARR, OSCO, Sierra all make manifolds. most can be bought online. KEM equipment may have some old stock left in inventory.
Redhawk
10-15-2009, 10:56 PM
If you can't get 'em you got to repair 'em. I have 302 ford 20 years old with leaky exhaust manifolds, could you tell me who is GLM. BARR and OSCO? thanks
LiveBait
10-17-2009, 03:26 PM
Cook Engine has Barr manifolds. They are near Jansen Beach in Portland
Blackfog
10-18-2009, 05:29 PM
Sea-Way Marine in Seattle has all brands of aftermarket manifolds and usually free shipping
http://www.glmmarine.com/
http://www.barrmarine.net/wordpress/
http://www.oscomotors.com/
http://www.sierramarine.com/
Redhawk
12-14-2009, 04:51 PM
Tanx
Fishnchips
12-16-2009, 06:39 AM
If they are cracked cast iron, I would replace them. Braze them if you have to keep them.
If they are aluminum, they can be easily welded. Aluminum manifolds are generally twice the price of iron.
Tip: Use brass plugs with antiseize compound rather than those silly twist drain valves.
Tip2: Don't run the engine out of the water.
Tip3: Use stainless steel bolts with antiseize compound.
fishin"G"man
12-16-2009, 12:19 PM
If they are cracked cast iron, I would replace them. Braze them if you have to keep them.
If they are aluminum, they can be easily welded. Aluminum manifolds are generally twice the price of iron.
Tip: Use brass plugs with antiseize compound rather than those silly twist drain valves.
Tip2: Don't run the engine out of the water.
Tip3: Use stainless steel bolts with antiseize compound.
Fish n chips is right here... If you can't get new (no longer made or whatever) you can braze them. Weld is not the way to go on cast iron. The trick to brazing cast iron manifolds and risers is to heat the whole piece and then braze the broken/cracked part. When it cools it cools as a piece not just that area which leads to breakage.
I'd think any reputable "weld" shop could do this. Ask them about their process for fixing cracked cast iron manifolds. Talk to the shops that have had success with brazing. They will tell you; heat the whole part and braze with brazing (brass) rod.
Once repaired, repaint the part and use anti-seize. That's always a good thing to use for reassembly.