Can I Modify Portable Gen Exhaust ?

[stevekk]

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]

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]

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]

Could you add a longer platform, like a receiver hitch carrier and turn the generator around or sideways?

[MEXICOWANDERER]

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]

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.