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Old 11-27-2017, 09:41 PM   #1
humungus
 
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Default Hardbody 2.4 D21 - what is a "header pipe"?

My 88 Hardbody has a pretty serious exhaust leak that seems to be coming from below the manifold. I was told I need a new 'header pipe'...

My question is, does that mean the whole exhaust header down to where it meets the exhaust pipe below the heat shield? Or just the connection between the bottom of the exhaust manifold to the exhaust pipe itself?

Could anybody share any insight with me as to what part I actually need?

Truck has about 380K on it, still gets better than 23 mpg on the highway amazingly enough.


Ray - San Diego
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Old 11-27-2017, 10:11 PM   #2
JIB21
 
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Some folks refer to the exhaust manifold as a "header pipe."
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Old 11-27-2017, 10:20 PM   #3
johnber
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header pipe is the pipe that bolts onto the bottom bolts or outlet of the manifold
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89 regular cab, plain as it gets with a z-24 and posi's
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Old 11-28-2017, 12:26 AM   #4
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RockAuto $65.79 ( $62.50 with 5% Discount code).
http://www.rockauto.com/en/catalog/n...ion,pipe,10038
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Old 11-28-2017, 10:26 PM   #5
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Thank you all, especially Swampyankee. That pic did it for me. I crawled underneath, took off the heat shield, and found it. Pretty rotten metal. The Walker pipe you link to doesn't seem to accommodate the heat shield, so I guess I don't need it?

Below are some pics. The leak isn't obvious, but the inside of the heat shield says that's where it is.

https://www.dropbox.com/s/l6lo3e6jbsh607l/IMG_20171128_140410.jpg?dl=0]

https://www.dropbox.com/s/lpv93hngli...40418.jpg?dl=0

https://www.dropbox.com/s/ciykvz1pn967twj/IMG_20171128_140423.jpg?dl=0]

https://www.dropbox.com/s/sl762vhb4n...40430.jpg?dl=0
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Old 11-29-2017, 08:50 PM   #6
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Well apparently you can't buy these header pipes aftermarket because they aren't CARB (California Air Resources Board) approved. Another gift from the great state I live in. No OEM available, and the aftermarket isn't legal for sale in CA. So... I tried to get it welded, but nobody would do it. I was just about to leave the third shop that said it was too rusted to weld it, when the guy walked out with a header pipe that at least fit my exhaust manifold. He said it had been sitting on the shelf for 20 years. He custom welded the rear of the pipe to fit to my catalytic converter (another CA requirement), and I got it all done for $165. Truck is much quieter inside, and doesn't stink the cab up with fumes every time I stop. I'm glad I could get it done, but it sure makes me hate the state government all that much more.

Had it not worked out, I probably would have headed to Vegas some weekend and picked one up there from O'Reillys.
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