[Sentoa] exhaust systems

[Mike Pedersen]

John Gallangher and Camer Sharpe have done some fine work in regards to the
wet exhaust on NT32s.  I'd recommend you search the SENTOA archives for
their comments.  John sent me a detailed schematic of his exhaust system
when I was repowering my 26.  It was very kind of him.  I agree with his
opinions, but I'll let him speak for himself...

Personally, I would have great reservation about not having a water trap or
riser on any wet exhaust system.  I believe my previous engine was flooded
when bow down in the slings.

Regards,

Mike Pedersen
Northern Spy
NT26-0028
Powell River, BC



On Tue, Sep 8, 2009 at 9:54 AM, J. M. Hebda <railroad at sover.net> wrote:

> Folks,
> --
> Our boat tech. announced that the muffler on Water Horse is deteriorated
> and leaking.
> The exhaust off the engine has the sea water injection elbow, rubber hose,
> fiberglass pipe,
> hose, muffler, hose, and flapper valve out the stern.
> When i suggested we just eliminate the muffler, go straight shot, he warned
> of seawater
> being pushed up into the engine from following seas. The muffler is not a
> check valve, so
> i figure if we put a loop siphon in the hold, it will be as safe as
> anything.
> *Do you agree?
> *Is there any *noise consequence?
> *Will the Cummins engine run better or worse with less *back pressure?*
> Will it affect* fuel efficiency?*
> --
> Jerry Hebda, NT32-031
> Water Horse, Grand Isle VT
> --
> JMH 2009-09-08 1255e BD
>
>
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>
>
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