Forum Discussion

stevekk's avatar
stevekk
Explorer
Jun 14, 2013

Can I Modify Portable Gen Exhaust ?

Has anybody modified the way the exhaust was pointed on your portable generator.

Like rather than exhaust shooting straight out of the back,
installed a 90 degrees elbow?

A master small engine mechanic told me not to modify the exhaust since it would change the back pressure?

I have a Yamaha 2800 and would like to mount it on/ near the rear bumper.
But the exhaust would be headed straight into the back of the RV.

Any ideas? THANKS..
  • MrWizard's avatar
    MrWizard
    Moderator
    Jun 14, 2013
    you would on an old B&S engine with a 3 inch exhaust/muffler

    newer designs with large mufflers have bolts/supports hoding the muffler/exhaust
    any weight there might affect the 'exhaust Tip' but not the engine manifold
    a number of people have modified the exhaust of the cpe 3000 generator,
    with good results and no harm to the manifold

    me i would use a piece of flexible exhaust wraped with heat tape and point that where wanted


    MEXICOWANDERER wrote:
    Careful with any extra added weight! It can fracture the aluminum cylinder head threads like plastic. You would absolutely have to design and install some kind of a bridge hanger to support the pipe bitter end.
  • SaltiDawg's avatar
    SaltiDawg
    Explorer
    Jun 14, 2013
    stevekk wrote:
    Has anybody modified the way the exhaust was pointed on your portable generator.
    ....
    Any ideas? THANKS..


    Steve,

    Modifying Generators

    VERY long thread, but maybe search "exhaust" or "enclosure" - when building an enclosure for noise reduction, inevitably the exhaust requires modification.
  • sljkansas's avatar
    sljkansas
    Explorer
    Jun 14, 2013
    Could you add a longer platform, like a receiver hitch carrier and turn the generator around or sideways?
  • MEXICOWANDERER's avatar
    MEXICOWANDERER
    Explorer
    Jun 14, 2013
    Careful with any extra added weight! It can fracture the aluminum cylinder head threads like plastic. You would absolutely have to design and install some kind of a bridge hanger to support the pipe bitter end.
  • copeland343's avatar
    copeland343
    Explorer
    Jun 14, 2013
    My dad had same problem. The easy fix was to turn generator around on the rear rack. Even if you add a 90 you will/might still have the heat hitting your rear wall.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,190 PostsLatest Activity: Jan 24, 2025