Re: prop pitch?

Very interesting write up. With that information in mind, what is your ideal
RPM? I am not aware of the pitch on the prop I have, but plane at about 3500
and max at 4000 RPM. Maybe 34 MPH tops. Anyone else have similar experience
with the V6? If so could I approximate the pitch based on others experience?
The prop I am running met some gravel suddenly and am looking for a
replacement... merely considering the possibilities.

Eric
1966 Sportsman 150
Oshkosh, WI
----- Original Message -----
From: "Andy Perakes" <aperakes@...>
To: <omc-boats@...>
Sent: Tuesday, July 15, 2003 10:36 PM
Subject: Re: prop pitch?

> I have 3 props (16, 18, and ~21) for my 155 Hp '67 Reveler i/o. (Just
like
> the one on e-Bay -- thanks much for sending the link!!) The 18 is pretty
> good for all-around use. The 16 revs high, but still functions okay and
> gives me lots of power (8 skiers at once). The ~21 used to be a 20 that
my
> smarty brother had upsized to a 22 about 20 years ago thinking it'd make
the
> boat go faster. The effect was it acted like a governor with groggy
> performance and wouldn't swing over ~3000 rpm. I had it whacked down a
> little, but it still clips me at 3500 rpm. So, based on my humble
> experience, you really can't deviate a whole lot from nominal (maybe 1-2
> sizes up or down tops). My guess is a 12 would scream rpms. If you're
just
> looking for a spare prop for emergencies, it'd probably work, but I'd go
> with the 14 given the choice.
>
> For others with the Buick V6 155 Hp engine: As an original owner running
in
> fresh water only during short Michigan summers, we've faced two regular
> problems: about every 10-15 years, both the alternator and the water pump
> need to be replaced. As someone previously mentioned, parts are now
> obsolete and very expensive. I kept my old parts in hopes of rebuilding
> them, but so far haven't found parts for my parts (stator for the
alternator
> and shaft/impellor for the pump, in particular). Our winterizing
procedure
> for 36 years has been to follow the instructions in the owner's manual
which
> simply states (only slightly shortened) open the petcocks and dump some
oil
> down the carb. Last year I started pulling the cooling hose in an effort
to
> dry things inside out a little quicker, but I'm a little leery about mice
> moving in. If anyone has any tips that have worked for them on
> servicing/maintaining/winterizing this engine, I'd love to hear them,
> especially if you know any good sources for parts (water pump prices
ranged
> from $380 to over $500 last year!!!)
>
> ----- Original Message -----
> From: <Pated66@...>
> To: <omc-boats@...>
> Sent: Tuesday, July 15, 2003 4:53 PM
> Subject: RE: prop pitch?
>
>
> > My concern would be the RPM you're running. the lower # props are going
> to let your motor turn faster and lessen your top end.
> >
> > Bill Desmond <nebdlo@...> wrote:
> >
> > >
> > >my rouge 210 has a 14 x 18 prop on it. i saw a couple
> > >props on ebay. 1 is 14p and the other is 12p. my ?
> > >is, how much will it gear the boat down. right now the
> > >boat is on small lake so top speed is not much of an
> > >issue. i will be pulling skiers and tubes. ive never
> > >experimented with prop pitch so i dont know if going
> > >from 18p to 12p will be alright or if i will end up
> > >with a tug boat.
> > >thanx
> > >daemian
> > >
> > >__________________________________
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> > >
> >
>
Received on Wednesday, 16 July 2003