Forum Discussion

deprived's avatar
deprived
Explorer
May 27, 2018

Exhaust modification issue!

Adding a new sway bar to my 2008 Tiffin. The sway install was going along just fine but unfortunately my exhaust is slightly different than the expected design. Perhaps my rig has had exhaust work or perhaps someone at the Freightliner factory was bored and decided to get a little creative and added a crook-shaped bit of pipe to the exhaust instead of the right-angle that is usually found in this model.

In any event, the exhaust pipe intrudes on the sway bar install but just a few inches.

The way I see it, I have two choices.

1: Replace the odd curved pipe section with a flexible section that is bent at a sharper angle, which will more closely resemble the stock exhaust.

2: Cut a few inches out of the straight part of the exhaust pipe and move the whole shebang forward , replacing the cut-out section with a length of flex-pipe or pipe clamp.

Both solutions are about the same amount of work. The flexible pipes get very favorable reviews, particularly among truckers and hotrodders.

The question I have is - does it make any difference in terms of engine performance and function? I don't really know much about exhaust theory. I don't know which method is best for exhaust flow.

Does it even matter?



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  • j-d wrote:
    Replace the crook with an elbow, but get a Mandrel Bent Elbow, NOT a crimped one. This is a mandrel bent from a speed shop

    NOT this Crimped type from a chain store auto parts

    The smooth mandrel bent one will flow better and last longer.
    What are you driving these days? Doesn't seem to be the Jambo.


    HEY!!! I still have the Jambo but will be selling it soon. We bought a 2007 Tiffin Allegro Open Road FRED. We needed more room for work and the 27-footer just wasn't cutting it.

    I will definitely look in to the mandrel-bent pipe.
  • j-d's avatar
    j-d
    Explorer II
    Congratulations on the FRED! Somebody'll get a Jambo with a great front suspension!

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