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4.0L OHV Stock Exhaust Compatibility?

fr1tz

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I'm trying to put an exhaust back on my truck. Its a 4.0L OHV with 4x4 and a manual. Does anyone know what years and model rangers would fit onto it?
When I got it the previous owner had dropped all the exhaust components off of it after the Y pipe so its basically open headers and had all the O2 Sensors are hanging down holding on for dear life. AND IT SOUNDS LIKE A DAMN TRACTOR.

Will 2WD 4.0L OHV fit onto the 4x4?

Any insight into what I can put back onto it would be much appreciated. Trying to just grab one from the junk yard if I can.
 


Shran

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If the Y pipe is intact you can probably buy everything behind that new, RockAuto and other places sell exhaust kits that have just about everything. The Y pipe is the most important part, they are not available new.

You will more than likely have to get a new catalytic converter, most junkyards won't sell those used.

Don't know if a 2wd exhaust system would fit a 4wd truck, it might.
 

bobbywalter

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Should be the same in those critters. I have a 2wd 2.9 y pipe on my 4.0 in the bronco 2.
 

bobbywalter

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But....the tail section somehow was recently smashed flat. I was looking that up and did notice some different part numbers.
 

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I believe there are some differences in the flange between the Y pipe itself and the converter. Seems like it changed shape somewhere in the late 90's. Not that it really matters if you have a welder, easy to fix that, just a bigger deal if you don't and are trying to use factory parts. And the 2.9 & early 4.0 have a single O2 sensor, after 93ish they had two or more, again, easy fix to weld in a bung.
 

fr1tz

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I'm not worried about emissions as my local gov does not require emissions for registration. I was thinking junk yard system for cheap and just putting a pipe where the old cat would have been, I'm mostly just trying to get something on the truck so those O2 sensors are actually doing something. I almost feel it might be easier to get a 90 from the parts store and just go right into a muffler out of the side and weld the bungs on but id rather it be factory-ish.

There's a 4.0 ohv at the pull a part near me (but its 2wd), wish I had something to compare it to before I went but maybe ill get lucky and it will all bolt up fine.
 

Broosedamoose

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I know the 98-01 are the same. I even think they used the same Y-pipe up to 04 on the SOHC engines. My first 2003 didn't have CAT's in the Y-pipe but the 03 I have now did. My 07 is totally different and I believe that started in 04.
 

Broosedamoose

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"There's a 4.0 ohv at the pull a part near me (but its 2wd), wish I had something to compare it to before I went but maybe ill get lucky and it will all bolt up fine."

The 2wd would be the same is it's the same year or close.
 

bobbywalter

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Yeah ..I have the big cat flange....those are main differences. For the ohv application.
 

bobbywalter

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sawzall?
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My credo
it is easier to fix and understand than "her"
There is the two hole...the fat bastard style I have....and the fast burn head style . ...ohv wise.
 

gaz

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@fr1tz ,
It has been my experience that universal components are cheaper, even new stainless steel, from big names like Borla. I suspect that you could recreate the entire exhaust with universal replacements or universal hi-flow replacements, maintaining all emissions, with improved performance potential.

I will not contest that a scrapyard exhaust should cost less but replacing the catalytic converters with hi flow universals with emissions bungs included is legal and much cheaper than sourcing OEM Ford parts
 

Rustbucket350

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My 2.9 Y pipe fit just fine onto the 4.0 manifolds.
 

fr1tz

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Follow Up:

I ended up getting a pretty nice used exhausts from pull-a-part from the cats back and getting a replacement prefab cat from rock auto.
All in about 300$ probably could be done cheaper if you can fab the cat mid pipe yourself but I don't have the skills to do so.

I pulled it off a 2wd truck with the same 4.0 OHV engine and I'm 99% sure they are identical to the 4x4 everything bolted up 100% with no modifications needed.

Glad it doesn't sound like a tractor anymore.

Thanks everyone for the input.
 

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