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Old 11-25-2008, 10:32 AM   #1
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Old 11-25-2008, 10:40 AM   #2
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holy crap is he insane?
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Old 11-25-2008, 10:50 AM   #3
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Old 11-25-2008, 11:56 AM   #4
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Someone should post a fake walk through on how to do this. Maybe using JB Weld and some quarters. Post it back to m.net as a successful experiment, then sit back and enjoy everyone arguing how it couldn't have worked.
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Old 11-25-2008, 11:57 AM   #5
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Quote:
Originally Posted by jayc72 View Post
Someone should post a fake walk through on how to do this. Maybe using JB Weld and some quarters. Post it back to m.net as a successful experiment, then sit back and enjoy everyone arguing how it couldn't have worked.

lol!
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Old 11-25-2008, 12:08 PM   #6
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Quote:
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Someone should post a fake walk through on how to do this. Maybe using JB Weld and some quarters.
OK, I'm working on a version of this. We'll see how it's received.
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Old 11-25-2008, 12:09 PM   #7
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Quote:
Originally Posted by jayc72 View Post
Someone should post a fake walk through on how to do this. Maybe using JB Weld and some quarters. Post it back to m.net as a successful experiment, then sit back and enjoy everyone arguing how it couldn't have worked.
DO IT!!!! Hahaha that would be awesome. Someone with an old piston do it.
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Old 11-25-2008, 12:30 PM   #8
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Assuming it may be deleted, here's what I posted:

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Originally Posted by Joe Perez
Actually, there may be some truth in this after all.

While searching for evidence to rebut your idea, I actually ran across an old article where something similar was successfully done by a race team in some spec series a while back. I accidentally closed the browser window and I can't seem to locate the article again (one complaint against Chrome- the History function never seems to work properly for me) but the gist of it was this:

The team in question used, of all things, US half-dollar coins. Apparently they used a small quantity of two part metal epoxy (ie: JB Weld) to attach one coin to the dished area of each piston, and then a second coin atop that. The use of epoxy apparently satisfied the problem of heat transfer, since unlike welding it provided a continuous bond across the face of the coin and did not create meaningful thermal isolation between the parts. Currency was chosen as it tends to be surprisingly consistent in terms of weight and volume, and as the amount of epoxy was both quite minimal and of course controlled by the fact that it was squished out as the coins were pressed under a weight during the curing process, they did not encounter balance problems. The copper-clad nickel construction of a 50 cent piece is apparently quite resistant to both heat and pressure in the combustion process, and the coins apparently suffered no damage during the time that they were run.

The team ran in this configuration for a nearly a full season, collecting several wins until they were finally found out during a protest. They successfully argued that they had not violated the rules, since the pistons were stock and had not been machined, nor had the head, deck, etc been machined beyond allowable limits. They were allowed to retain their points, though of course the rules were updated.

I wiki'd the specs on US coinage, and sure enough, the 50 cent piece is the largest (in terms of mass) US coin in common circulation. The weight is specified at a paltry 11.34 g, and the dimensions work out to a volume of 1.6cc. Thus, two 50 cent coins stacked would displace about 3.2cc.

Assuming an otherwise stock 1.6 engine, this would take you from 9.4:1 to exactly 10:1, which is actually a pretty good result considering the total investment of $4, as compared for $580 (plus machining) for a set of Weiscos.

This isn't what I expected to find, but it makes me believe that the fundamental idea may have merit.
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Old 11-25-2008, 12:34 PM   #9
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Old 11-25-2008, 12:37 PM   #10
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I 3> Joe

That is pretty convincing, did anyone bother to actually google this? It sounds stupid enough to have been tried.
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Old 11-25-2008, 12:42 PM   #11
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Someone who's got an old set of pistons should do a writeup, a mod sticky it here, and then link it back to m.net.
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Old 11-25-2008, 12:43 PM   #12
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Joe, you're going straight to Hell for that.
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Old 11-25-2008, 12:56 PM   #13
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it scares me how you can fabricate something so detailed lol
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Old 11-25-2008, 01:12 PM   #14
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lmao rofl thats priceless Joe.
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Old 11-25-2008, 01:14 PM   #15
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it scares me how you can fabricate something so detailed lol


In a few years he'll be licensed to do it on behalf of others for profit.
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Old 11-25-2008, 01:45 PM   #16
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Quote:
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it scares me how you can fabricate something so detailed lol
That was exactly my thought!!!
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Old 11-25-2008, 02:23 PM   #17
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Dude, that was great.
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Old 11-25-2008, 02:32 PM   #18
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Damn you actually had me fooled for a second. Nice writing.
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Old 11-25-2008, 02:40 PM   #19
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I was a little disappointed, actually. I was hoping for another video like the thermostat comparison.
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Old 11-25-2008, 02:58 PM   #20
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*note to self* When Joe offers advice...check again before implementing.
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