Re: Hot gas in tank

Posted by Mark - IN. on June 25, 2006 at 04:56:19 from (152.163.100.74):

In Reply to: Hot gas in tank posted by 37 chief on June 24, 2006 at 22:23:59:

It's been years Stan, but yes it'll certainly combust easier, but that can create a problem with early combustion. On the dragstrip, used to put Moroso "cool cans" near the engine and fill them with ice to prevent pre-ignition conditions. Basically they are/were nothing more than a round, enclosed container with the fuel line coiled around the sides, inside the container, and the ice chilled the fuel before were delivered to the injectors or carb, which ever we were running. You don't particularly want fuel igniting too soon during the intake stroke, or works against you (the stroke), and that robs HP at least. Hot fuel has a lower combustion/flash point and in turn has a tendency to make that happen.

Here's one that you may not be aware of, as are probably most Harley riders that do it to sound cool, without realizing the benefits. Popping the throttle at a stop light on an air cooled engine, namely Harleys, but is the same across the board. Drives many nuts to hear that, especially if have open drags (mine does). When you're not moving, air isn't circulating to cool the jugs (cylinders) or heads. A quick pop or two acually helps cool them with the cooler atomized gas hitting them. Again, many do that because to sound cool, especially in these overly popular "must own a Harley" days, but there's a reason/benefit to it, for the engine. I've always hard iron jugged Harleys (pre-Evolution alluminum), and heat is their worst enemy. I've got one now that when it nears 60 degrees out, if/when come to a stop...spits, pops, sputters, lugs...those big slugs and jugs can't deal with the heat. Get it around 0 degrees and it screams for more gas (...man, let's go, go, go). The problems with the latter are that at 70 MPH at 0 degrees, the blood in the fingers turns to slush (even with gloves), and no one's expecting you to be out cruising the Harley, so they're looking for you out on the highway even less. Scooter loves it though (...man, give me the gas, let's scream, scream, scream).

Only gas tractor I have is an old AC-B that I mow a few acres with. Tank gets warm, but hasn't been a problem. And, I like to get out there when the sun's just coming up for mowing. A lttle dewy, but is cooler for both me and that old B. And I always take the cigarette out of my mouth before opening the tank and sticking an eyeball down into the filler to see how much gas its got in it. Hate the thought of a perfectly good lit cigarette falling into the tank...they're too expensive these days. With Diesel, I can fish them back out in one piece, still lit sometimes, but they do taste a little funny and smoke faster though. Ha Ha Ha Ha. Have a good one there Stan.

Mark

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