Uses for old outboard impellers, teflon anti-seize.
Lord Nougat,
You can use old impellers as handsome tree decorations, or, they make exciting paper weights, using their modest gravity to keep small notes from flying off of flat surfaces in light breezes, or...the possibilities are endless!!
I would say keeping the old impellers to reinstall them in your OB, just in case, is about as smart is saving used toilet paper just in case you totally run out, you can fold it over and find a spot that's not soiled yet(eeuuhh!). On second thought, saving used toilet paper is a whole lot smarter than putting an old impeller back in an OB.
First time I replaced an impeller (only time) I had the help of someone who'd done it before. It took about an hour and a half to do a careful job, and we didn't get the shifter rod in the right place, meaning we had forward, neutral, but no reverse till we got around to taking the lower end off again and repositioning it. So, something to check before you tighten all the bolts and clamp the motor back on. Actually, the job is relatively easy and fun, and certainly not one should do any less than every three years. You can use a light wrap of teflon plumber's thread seal tape or maybe some waterproof grease so the bolts don't corrode making the parts hard to get apart. The benefit of the Teflon tape is it stops corrosion AND keeps bolts and nuts from untreading. I used to have a problem of nuts viabrating lose and falling, or almost falling off my outboard scissors mount...not a very cool thing to happen out at sea! Since I started using it the nuts stay
put, also prevents corrosion between stailess steel and aluminum, as does silicone grease or similar material. Nothing worse than removing a stainless steel screw from an Aluminimum part, spar, etc. and find that its left you with an unusable enlarged corroded hole!
Jerry
--- On Mon, 2/23/09, Lord Nougat <lo… [at] yahoo.com> wrote:
From: Lord Nougat <lo… [at] yahoo.com>
Subject: Re: [Cal_Boats] Re: [Cal_BoatsImpeller failure, was: Oil mix Ratios, and cooling
To: Ca… [at] yahoogroups.com
Date: Monday, February 23, 2009, 9:53 PM
Jeez, I have yet to even figure out how to change my impeller - all this talk is making me feel a bit more motivated about not just figuring it out, but actually replacing it. Can the old one be kept laying around as a spare, or is that just dumb?
From: Gerald Sobel <sobel_solar@ yahoo.com>
To: Cal_Boats@yahoogrou ps.com
Sent: Monday, February 23,
2009 7:15:19 PM
Subject: [Cal_Boats] Re: [Cal_BoatsImpeller failure, was: Oil mix Ratios, and cooling
Rodney,
I usually use something less than 50:1 to 70:1, It's nice to know I can get away with less oil without risking the engine, but I like a little bit more...just in case, and, perhaps, when my OB threw an impeller vane which blocked the cooling line to the power head nearly completely, it may have saved the engine.
Anyway I learned my lesson about how you don't need to change impellers annually if your using the motor year round, yet it's much smarter not to wait until it fails, to change it. I think i must have gone six years on the same impeller.
Jerry
--- On Mon, 2/23/09, Rodney G Johnson <rjohnson24@juno.
com> wrote:
From: Rodney G Johnson <rjohnson24@juno. com>
Subject: [Cal_Boats] Oil mix
Ratios, and cooling
To: Cal_Boats@yahoogrou ps.com
Date: Monday, February 23, 2009, 9:37 AM
I recall reading an article in an issue of SMALL BOAT JOURNAL back in the
1980's that reviewed the ESKA 5hp outboard, the powerhead was air-cooled, but
there was a waterpump to cool the exhaust flowing out down the drive leg. The
outboard ran on 50/1 fuel/oil mix, however if the waterpump failed you needed to
run using 25/1 fuel / oil ratio to keep the engine cool. I would think that on
any 2-stroke engine, up to a point it would be better to use too much oil than
too little. More oil should equal less friction and thus cooler running..... as I
say, up to a point!
Rod Johnson
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