SD vs OBS Exhaust manifolds...

[CSIPSD]

What exactly is the differance? Its only the passanger side right? I have a set of OBS manifolds, but not sure if they will work for a superduty turbo kit???

 

[Dieselboy.]

No they dont. One side is different. Roughly an inch IIRC

 

[rpm-inc]

What exactly is the differance? Its only the passanger side right? I have a set of OBS manifolds, but not sure if they will work for a superduty turbo kit???

Saw your wanted thread. I have a set of e99 manifolds you can have if that helps.

 

[CSIPSD]

If E99 are the same as L99 I would love to take them off your hands.

Anyone have anymore input? If one side is different and not the other (as I recall) then I only need one.

 

[chris1978]

I'm running e99 manifolds. All the L99 stuff bolted right up no issues.

And I think its the drivers side that needs to be changed on the OBS.

 

[CSIPSD]

Anyone have any more info?

 

[Tom S]

A little cut and paste from my conversion article. The coated ones were for the swap to a 38r and the other ones are from my OBS. The driver side manifold has a longer outlet piece.

SuperDuty Drivers side exhaust manifold F81Z-9431-AA which is a Ford Only Item

There is a difference in length at the outlet VS the OBS manifold. I am aware of others that did not swap out this manifold using standard up pipes but I was I wanted to be sure on the alignment with the bellowed up pipes.

I also purchased a new SD passenger side manifold at International to send to be coated. I think the OBS manifold would have worked fine. International 1831025C1 or Ford F81Z-9430-AA

 

[CSIPSD]

Perfect Tom...

Picture is worth a thousand words.

You can see the casting for the last bolt and the up pipe clamp is one and the superduty there apart.

 

[old man dave]

7.3 drivers side 97 and newer are the same. Pre-97 are the old style.