Re: prop pitch?

Good input.... very acurate explanation...

Thanks
> 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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> > > >
> > >
> >
>
>
Received on Wednesday, 16 July 2003