[ApS]

Originally Posted by Wizard of Uhs

"...If you want to point a finger at some kind of motor contributing to the pollution more than any other, try all the 2 stroke outboards and PWC's running around Winnie. I'll bet they outnumber the performance boats 50-1 (or more!). You want to talk running rich?? Oily?? Start there and leave the small % of performance [GFBL] boats out of it. There are many lakes here in Michigan that do not allow 2 strokes anymore.... maybe someone should start that crusade at Winnie?????

The outboards and PWCs are getting their pollution-act together (finally!).

The GFBLs can't seem to get away from fouling the air by burning a gallon a minute of gasoline. And who knows how much heavy gear lube gets discharged from those 500-to-1000+HP beasts into the lakewater? (Lakewater, which some -- like the islanders and me -- consume).

Wouldn't it be better to improve the subject of the argument, rather than to try to change it?

Originally Posted by ITD

I think the black ring is organic in nature, mold or mildew or something like that........

Petroleum waste IS organic.

Originally Posted by Mee'n'Mac

"...As to your black ring being some residue of gasoline usage, why don't you follow up and have it analyzed and prove it. Until then it's just another speculation, like alien visitation, rather than fact, like Apollo moon landings. Who knows you may even be right this time."

I opined at an earlier thread that it is the "heavy ends" of petroleum products (oil and gearlube] was involved -- not so much the "lighter ends" of gasoline. (That "bath-tub ring" doesn't appear in early family photos of Winnipesaukee).

I suspect that analyses have already been done on Winnipesaukee -- maybe elsewhere. There are analytical folks everywhere.

We'll just have to wait for shore things to chime in here.

Originally Posted by Audiofn

A overly rich mixture in a engine not only reduces your HP but also washes down your cylinder walls and blows up your motor.

Yes, but in some popular custom applications, over-rich mixtures are used to keep the engine from frying.

A carburated automobile engine -- or, in your case, a truck engine -- with a hugely defective over-rich mixture will run only 75K miles, rather than 100K miles before it wears out. Follow an old pickup up a hill sometime (and some newer, carburated, ones).

While you can't see what's stinking up the air, your nose will let you know.

Originally Posted by Audiofn

The goal of any high performance boater is to have a perfect burn to maximize hp, so that is not to rich and not to lean."

A perfect burn is called "stoichiometric", and it's different for different fuels; but it's always best to err on the side of over-rich, as Wizard of Ahs found out too late. You don't see many beige tailpipe interiors (indicating a lean condition), as opposed to pitch-black (indicating a too-rich mixture) on GFBLs. Take a look.

GFBL boats need to maximize horsepower to go 82MPH (rather than to go only 81MPH). How they do that throws the "perfect mixture" off the charts -- whether carburated or modified-fuel injection. (To our shared, Winnipesaukee, detriment).

Originally Posted by Mee'n'Mac

"...First let me presume you're talking about hybrids, in particular the Prius (which, though good, doesn't really get 60 mpg)...".

If you read the "wired.com" article, you'd read that:

For true masters, 50 miles per gallon is a piker's score; they shoot for a consistent 60. When it comes to gas mileage, Prius owners can make TiVo users and Mac addicts seem blasé.

See? The "True Masters" -- which would be technoids like me and Mee'n'Mac -- well, I mean, me and NOT Mee'n'Mac -- well, me and Mac'n'Mee [but not Mee].

Technoids like Mac and me.