Re: prop pitch?

Why do people always think they can use auto parts in a boat? Starters,
altnators, distributord, fuel pumps, carburators, water pumps, head gaskets,
even frost plugs are different. Fuel pumps and carbs must be designed to
prevent fuel from leaking/venting into the engine compartment.Auto parts
don't. All electrical parts must be designed to prevent arcing or keep the
arcs from coming into any gas fumes. Waterpumps will have bronze impellers
insterad of the usual stamped steel. Frost plugs need to be be brass or
stainless steel. Use of auto parts where "marine application" is speced is
unsafe as well a USCG violation, in another word, ILLEGAL! If your boat does
explode, and your insurance company finds non USCG compliance parts, no
coverage.

jim

----- Original Message -----
From: "Matt Urick" <matt@...>
To: <omc-boats@...>
Sent: Wednesday, July 16, 2003 5:47 AM
Subject: Re: prop pitch?

> Bases on my Merc 150hp straight 6 (Chevy 230), all of the parts that I've
> ever needed came from a typical auto parts store. Most generic things,
like
> the fuel pump, starter, and points have come from AutoZone. The carb
> rebuild kits that I have used came from NAPA. AutoZone doesn't like to
hear
> "marine application", so I just figure out what car had that same motor,
and
> ask for that part. For the 155hp, a 1965 Buick Skylark with a 225cid V6
> should do it. AutoZone.com states that a new waterpump, with a limited
> lifetime warranty, is 54.99.
>
> Hope that this helps.
>
>
> Matt Urick
>
>
> ----- Original Message -----
> From: "Andy Perakes" <aperakes@...>
> To: <omc-boats@...>
> Sent: Tuesday, July 15, 2003 11:36 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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> > > >http://sbc.yahoo.com
> > > >
> > >
> >
>
Received on Wednesday, 16 July 2003