YES YOU NEED TO READ THRU THE LINKS THAT'S WHAT THEY ARE THERE FOR...AND THERE'S A GREAT DEAL OF USEFUL INFO IN THOSE LINKS,
www.youtube.com
don,t get over whelmed, make a list and test adjust correct or replace each problem,
and check it off the list then move to the next issue,
its a finite list and theres not a damn thing on it you can,t accomplish,
with a bit of research, a few questions and this web-sites help
(a few tools the right attitude and a thick stack of cash would also be useful of course)
think...
Engine Building Part 4: Pistons, Rings, and Rods
This video is all about pistons, rings, and connecting rod installation.automotive engines diagnosis repair rebuildingautomotive engines diagnosis repair reb...
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and check it off the list then move to the next issue,
its a finite list and theres not a damn thing on it you can,t accomplish,
with a bit of research, a few questions and this web-sites help
(a few tools the right attitude and a thick stack of cash would also be useful of course)
think...
End Gap Mistakes That Will RUIN Your Engine
Lake Speed Jr visits Jimmy Barton’s Hot Rod Garage to ask the question "how big should the ring end gap be?”Jimmy shares some some inside tips & tricks from ...
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Mild steel expands when heated due to thermal expansion. The amount of expansion depends on the temperature change and the material's coefficient of thermal expansion. For mild steel, a common rule of thumb is that it expands by about 0.0000065 inches per inch for every degree Fahrenheit increase in temperature.
your top piston ring will generally see operating temps in the 500F-630F temp range,
lets do some math here, if you have a 4" diameter top ring with a .002 end gap at room temp, les assume 75 degrees room temp,
and you understand a 4" diameter piston ring is 4"diameter , times 3.147(PI) to get length its approximately 12.588 " in length,
thats 12.588", minus .002 for the ring gap, but that's at 75F degrees, if we can expect the top piston ring to occasionally see lets say 630 F -75F,
that's a easily predictable operational temp increase to about 555F degrees above installed ring temp
12.588-.002=12.568 ring circumference length ,
12,568 at room temp, boost temp by 555f and the ring expands about .0000065 per degree, so it will occasionally be under hard acceleration,
.0036075 longer in real operational conditions, thus the real end gaps at approximately .0016 in the running engine with the original .002 ring end gap.
now consider that at lets say a 750 rpm idle ,that ring is being subjected to 375 compression strokes per minute
the piston to bore tolerance is less than .001 and the piston to bore side gap is generally partly filled with hot oil film that the piston ring floats on, thus the effective ring end gap is potentially allowing 400-700 psi compressed gases above the piston to leal past the ring end gap that,s at MOST .001x .0016 of an inch mostly already filled with oil, and you have 1/375th of a minute for it to do so, REMEMBER its a 720 degree repeating cycle
thus your worried about an effective ring end gap less than the diameter of a single human hair under typical conditions, leaking pressurized fuel air past the top ring..... then there's the second ring which operates with much more oil trapped between it and the top ring
now run that same engine up to 6000 rpm, and you have 1/8th the time for the ring gap to leak pressure
Id also point out that if you get into engine knock(detonation) pinging with cheap gas temperatures rise rapidly, that's one reason rings have END GAPS, because if the ring expands and the end of the rings touch rings can lock the piston in the bore, that results in a broken piston
if your concerned about the ring gap, why not use
Total Seal® Piston Rings | Performance Piston Ring Manufacturer
If It Takes a Piston Ring, We Can Build It! Since 1967, Total Seal has been the authority in piston ring design and technology for Vehicle, Diesel, Industrial, Marine and Aviation applications.
www.totalseal.com
Piston Ring Technology: Stock and Performance - Engine Builder Magazine
Piston rings have one of the toughest jobs inside an engine. They’re slammed up and down between the ring lands thousands of times a minute; they’re subjected to searing temperatures and extreme pressures; and they’re constantly scraping back and forth against the cylinder walls. In spite of all...
www.enginebuildermag.com
Piston Rings and Engine Heat: Do You Really Need a Bigger Radiator?
How much can the profile of your piston rings affect the amount of heat your engine generates? What we found might surprise you.
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