cracked header or manifold?
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cracked header or manifold?
got an 89 f250 and there is a crack in the exhaust manifold or header, not sure which it is, the part attatched to the block, anyways it has a crack, took it for a compression test and there was no loss, now is it easier to change it out myself of just take it in to the mechanic?
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Joined: Aug 2007
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From: Gonzales,LA
Welcome to FTE.
I think were having some confusion that we need to clear up.Some people depending were you come from call headers the actuall heads on a engine or a aftermarket high performance type exhaust manifolds. From what i can tell were talking about exhaust manifolds.We need a little more info on your Engine.Are we talking about a V8 or a In-line 6 Engine? If it's a V8 engine Which side the crack is on?
IMO If it's a In-line 6 i would bring it to the shop since the intake and exhaust are together which could cause a headache
I think were having some confusion that we need to clear up.Some people depending were you come from call headers the actuall heads on a engine or a aftermarket high performance type exhaust manifolds. From what i can tell were talking about exhaust manifolds.We need a little more info on your Engine.Are we talking about a V8 or a In-line 6 Engine? If it's a V8 engine Which side the crack is on?
IMO If it's a In-line 6 i would bring it to the shop since the intake and exhaust are together which could cause a headache
Fleet Mechanic
Joined: Nov 2004
Posts: 1,324
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From: Michigan
Headers would look something like this.
http://broncograveyard.com/images/catalog/7CHASSIS.JPG
An exhaust manifold will look something like this.
http://broncograveyard.com/images/catalog/30040.JPG
Both serve the same pupose. To route the exhaust gases to the rest of the exhaust system. The header is more of a performance enhancer. Manifolds came stock on these trucks. If it has headers, they have been replaced at sometime in the trucks life. This may make it easier to remove the bolts and studs. If original manifolds are on the truck, you may have issues with broken studs and bolts while trying to remove.
http://broncograveyard.com/images/catalog/7CHASSIS.JPG
An exhaust manifold will look something like this.
http://broncograveyard.com/images/catalog/30040.JPG
Both serve the same pupose. To route the exhaust gases to the rest of the exhaust system. The header is more of a performance enhancer. Manifolds came stock on these trucks. If it has headers, they have been replaced at sometime in the trucks life. This may make it easier to remove the bolts and studs. If original manifolds are on the truck, you may have issues with broken studs and bolts while trying to remove.
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On my 1992 F150 with 302 both exhaust manifolds were cracked and the used exhaust manifolds I found at the salvage all had the sme crack. I brazed my cracks but that only lasted a thousand miles or so the two times I did that. I found some brand new aftermarket exhaust manifolds at a salvage yard that had more ribs in the casting than the original manifolds and they have held up for over 100k.