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Message: On displacement vs. Strength, from LNE

Changed By: grant
Change Date: January 15, 2017 12:41PM

On displacement vs. Strength, from LNE
[quote=MarcW]


There is no replacement for displacement, but with these engines bigger equals weaker. With a bigger bore the cylinder walls become thinner. A "stroker" keeps the cylinder bores either the same size or requires they not be machined as much to pick up the desired increase in displacement but a "stroker" brings with it its own problems. Higher piston speed and thus possibly a lower red line. Even so the crank/block experience more stress. The cylinders experience more pressure from the longer rods, too.

One is kind of damned if he does, damned if he doesn't... Stick with the stock engine size and its output. The engine probably lasts longer but the risk is the on track performance has one hoping the engine blows so he has an excuse to do a bigger/more powerful engine. Bump the engine's size and the power's there but the engine goes boom even with good aftermarket hardware installed.[/quote]

I realize this is the manufacturer's marketing claims, but many shops support it. From the LNE site:

"Nickies utilize a highly wear resistance cylinder bore plating (NSC - which stands for nickel, silicon, and carbide) for long life, which is very similar to Nikasil™, as used on the Carrera GT, GT2, GT3, and 911 Turbo engines! [B]Nickies™ feature our superior aluminum alloy up to 66% stronger than than the cast in Lokasil™ bores or MMC sleeves, providing for improved thermal conductivity and reduced wear and friction over original or cast iron sleeves, and allow for larger bores without any loss of strength or longevity[/B]."
- LN Engineering Web Site; nickies; 3.2-->3.6 kit

This is one of several reasons I chose the nickies approach rather than boring. The others being 2) nikasil vs locasil, 3) matched to JE pistons, 4) better machining QC vs a manual machine shop

Again, i can't see the future, but i can be hopeful..

Grant
Changed By: grant
Change Date: January 15, 2017 12:40PM

Re: Answers and comOn displacements vs. Strength, from LNE
[quote=MarcW]


There is no replacement for displacement, but with these engines bigger equals weaker. With a bigger bore the cylinder walls become thinner. A "stroker" keeps the cylinder bores either the same size or requires they not be machined as much to pick up the desired increase in displacement but a "stroker" brings with it its own problems. Higher piston speed and thus possibly a lower red line. Even so the crank/block experience more stress. The cylinders experience more pressure from the longer rods, too.

One is kind of damned if he does, damned if he doesn't... Stick with the stock engine size and its output. The engine probably lasts longer but the risk is the on track performance has one hoping the engine blows so he has an excuse to do a bigger/more powerful engine. Bump the engine's size and the power's there but the engine goes boom even with good aftermarket hardware installed.[/quote]

I realize this is the manufacturer's marketing claims, but many shops support it. From the LNE site:

"Nickies utilize a highly wear resistance cylinder bore plating (NSC - which stands for nickel, silicon, and carbide) for long life, which is very similar to Nikasil™, as used on the Carrera GT, GT2, GT3, and 911 Turbo engines! [B]Nickies™ feature our superior aluminum alloy up to 66% stronger than than the cast in Lokasil™ bores or MMC sleeves, providing for improved thermal conductivity and reduced wear and friction over original or cast iron sleeves, and allow for larger bores without any loss of strength or longevity[/B]."

This is one of several reasons I chose the nickies approach rather than boring. The others being 2) nikasil vs locasil, 3) matched to JE pistons, 4) better machining QC vs a manual machine shop

Again, i can't see the future, but i can be hopeful..

Grant

Original Message

Author: grant
Date: January 15, 2017 12:38PM

Re: Answers and comments
[quote=MarcW]


There is no replacement for displacement, but with these engines bigger equals weaker. With a bigger bore the cylinder walls become thinner. A "stroker" keeps the cylinder bores either the same size or requires they not be machined as much to pick up the desired increase in displacement but a "stroker" brings with it its own problems. Higher piston speed and thus possibly a lower red line. Even so the crank/block experience more stress. The cylinders experience more pressure from the longer rods, too.

One is kind of damned if he does, damned if he doesn't... Stick with the stock engine size and its output. The engine probably lasts longer but the risk is the on track performance has one hoping the engine blows so he has an excuse to do a bigger/more powerful engine. Bump the engine's size and the power's there but the engine goes boom even with good aftermarket hardware installed.[/quote]

I realize this is the manufacturer's marketing claims, but many shops support it. From the LNE site:

"Nickies utilize a highly wear resistance cylinder bore plating (NSC - which stands for nickel, silicon, and carbide) for long life, which is very similar to Nikasil™, as used on the Carrera GT, GT2, GT3, and 911 Turbo engines! [B]Nickies™ feature our superior aluminum alloy up to 66% stronger than than the cast in Lokasil™ bores or MMC sleeves, providing for improved thermal conductivity and reduced wear and friction over original or cast iron sleeves, and allow for larger bores without any loss of strength or longevity[/B]."