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  #1  
Old 10-19-2010, 05:40 PM
wahvtec wahvtec is offline
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Default unbolting exhaust from manifold

I can here leaks in my exhaust and seems i cant get to it without taking the exhaust off. Major leak seems to be coming from on top of the cat? Whatever thats about. But the old bolts seem to have locked themsselves onto my 1999 2.5 5sp manifold. THe bolts im referring to are the ones connecting the exhaust to the bottom of the manifold. THere are 2. Anyone know any tricks. The 200,000 miles havent been nice to these bolts i guess
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  #2  
Old 10-19-2010, 05:58 PM
darkstar_420 darkstar_420 is offline
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Default Re: unbolting exhaust from manifold

spray em with penatrating fluid and leave it sit for a few hours then spray again, wire brush if you can, then maybe spray again
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  #3  
Old 10-19-2010, 05:59 PM
Roadkill Roadkill is offline
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Default Re: unbolting exhaust from manifold

soak them with wd40 and use an air impact wrench if you have one.
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1989 Super cab, 4X4, 5.0 v8, c4 transmission.
2" leveling kit in front and 2" add-a-leaf in rear
- 3" Body lift - 3" or 4" suspension lift - 33-12.50 r15 Mud terrains - Explorer OHC, seats and center console - custom hood - 9000# BadLands winch
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  #4  
Old 10-19-2010, 05:59 PM
wahvtec wahvtec is offline
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Default Re: unbolting exhaust from manifold

its been pb blasted 4 seperate occasions and a 3 foot breaker bar was used with failure. A friend suggested pb blasting then heating it with a torch. Sounded weird to me anyone else done this?
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  #5  
Old 10-19-2010, 06:01 PM
darkstar_420 darkstar_420 is offline
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Default Re: unbolting exhaust from manifold

Quote:
Originally Posted by wahvtec View Post
its been pb blasted 4 seperate occasions and a 3 foot breaker bar was used with failure. A friend suggested pb blasting then heating it with a torch. Sounded weird to me anyone else done this?
yes you may need heat, i would heat and try before using an impact
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  #6  
Old 10-19-2010, 06:01 PM
Roadkill Roadkill is offline
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Default Re: unbolting exhaust from manifold

heat will work somtimes, but the hammering of the impact wrench somtimes works better than a breaker bar.
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1989 Super cab, 4X4, 5.0 v8, c4 transmission.
2" leveling kit in front and 2" add-a-leaf in rear
- 3" Body lift - 3" or 4" suspension lift - 33-12.50 r15 Mud terrains - Explorer OHC, seats and center console - custom hood - 9000# BadLands winch
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  #7  
Old 10-19-2010, 06:02 PM
darkstar_420 darkstar_420 is offline
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Default Re: unbolting exhaust from manifold

yes but the hammering of an impact can also break them, try a breaker bar first if nothing after heating then i would try the impact
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  #8  
Old 10-19-2010, 06:12 PM
wahvtec wahvtec is offline
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Default Re: unbolting exhaust from manifold

ok cool i dont have an impact but if heat doesnt work ill swing it by my friend at goodyear. Im so tired of my 2.5 being so loud.
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  #9  
Old 10-19-2010, 06:14 PM
Roadkill Roadkill is offline
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Default Re: unbolting exhaust from manifold

if you get them to move, then tighten and loosen them, usually they will loosen a little more each time. I've broken more bolts with a breaker bar than I have with an impact wrench, thats just what I've noticed though.
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1989 Super cab, 4X4, 5.0 v8, c4 transmission.
2" leveling kit in front and 2" add-a-leaf in rear
- 3" Body lift - 3" or 4" suspension lift - 33-12.50 r15 Mud terrains - Explorer OHC, seats and center console - custom hood - 9000# BadLands winch
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  #10  
Old 06-15-2011, 02:04 PM
rmarontar rmarontar is offline
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Default Re: unbolting exhaust from manifold

Manifold bolts for my 1998 Ranger V6 3.0 at the Ford dealer are out of sight. Upper bolts cost $10 each and lower longer bolts are $17 each. That's $81.00 nearly to cost of the replacment manifold. Someone must have a supply. They are metric M8 and must be made of gold at that price.
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