Blue print an engine, what is it?
#1
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Blue print an engine, what is it?
Hello,
I've heard people say that if an engine is blue printed then it will make more HP and stuff. What exactly is that and can it be done to a rotary?
Also, what are the historical things that people have done to rotary engines to make more power (less SC/Turbo)
Thanks for the knowledge!
I've heard people say that if an engine is blue printed then it will make more HP and stuff. What exactly is that and can it be done to a rotary?
Also, what are the historical things that people have done to rotary engines to make more power (less SC/Turbo)
Thanks for the knowledge!
#2
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It's basically taking a stock motor and making all the dimensions match perfectly within the factory specs. Believe it or not, motors don't come perfect from the factory. They're full of small variations (thousands / ten thousands of an inch).
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'perfect' is a relative term.
the tolerances of a MODERN engine leaving the factory, for the important mechanical bits, are much better these days and don't have to be fooled with. but with components that are cast (heads, manifolds, rods, other things) variation can be in the hundreths of an inch.
blueprinting is really just bringing the tolerances in tighter, and is basically the baseline preparation for building a really good motor (whether you're going tomodify its mechanical operation or not).
the tolerances of a MODERN engine leaving the factory, for the important mechanical bits, are much better these days and don't have to be fooled with. but with components that are cast (heads, manifolds, rods, other things) variation can be in the hundreths of an inch.
blueprinting is really just bringing the tolerances in tighter, and is basically the baseline preparation for building a really good motor (whether you're going tomodify its mechanical operation or not).
#7
Blue printing is also a decent way to gain power under "strict racing regulations". Some classes won't allow various engine mods, but will allow "factory spec" tweaking.
Blueprinting can snag you another 5-10 hp over another stock vehicle...which when everyone is running the same specs, ends up being an awful lot on the race track. Just look at how much money the spec miata racers spend on blueprinted engines...just for an extra 5 hp over the guy next to them.
Technically due to variables in manufacturing, its possible to not gain ANY power from blueprinting an engine. If you've ever heard of factory freaks, thats what occuring there. Basically an engine with just the right type of tolerances, in just the right combination, outputing 10-40 more whp then the whole lot of normal produced cars. aka if you tried to blueprint an engine with already flawless tolerances, you won't be looking at any power gains.
Blueprinting can snag you another 5-10 hp over another stock vehicle...which when everyone is running the same specs, ends up being an awful lot on the race track. Just look at how much money the spec miata racers spend on blueprinted engines...just for an extra 5 hp over the guy next to them.
Technically due to variables in manufacturing, its possible to not gain ANY power from blueprinting an engine. If you've ever heard of factory freaks, thats what occuring there. Basically an engine with just the right type of tolerances, in just the right combination, outputing 10-40 more whp then the whole lot of normal produced cars. aka if you tried to blueprint an engine with already flawless tolerances, you won't be looking at any power gains.
Last edited by crossbow; 11-19-2004 at 10:36 AM.
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With blueprinting, usually comes the rebuild with higher quality parts than what you started with. I can't confirm, but have heard that just switching to ceramic apex seals is good for a couple more hp just because of their better structural properties.
And more power from an NA rotary can come from anything you can think of with a piston engine, less specific parts to either rotary or pistons - cams, heads, valves, etc...
And more power from an NA rotary can come from anything you can think of with a piston engine, less specific parts to either rotary or pistons - cams, heads, valves, etc...
Last edited by Red Devil; 11-19-2004 at 01:34 PM.
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Originally Posted by crossbow
Blue printing is also a decent way to gain power under "strict racing regulations". Some classes won't allow various engine mods, but will allow "factory spec" tweaking.
Blueprinting can snag you another 5-10 hp over another stock vehicle...which when everyone is running the same specs, ends up being an awful lot on the race track. Just look at how much money the spec miata racers spend on blueprinted engines...just for an extra 5 hp over the guy next to them.
Technically due to variables in manufacturing, its possible to not gain ANY power from blueprinting an engine. If you've ever heard of factory freaks, thats what occuring there. Basically an engine with just the right type of tolerances, in just the right combination, outputing 10-40 more whp then the whole lot of normal produced cars. aka if you tried to blueprint an engine with already flawless tolerances, you won't be looking at any power gains.
Blueprinting can snag you another 5-10 hp over another stock vehicle...which when everyone is running the same specs, ends up being an awful lot on the race track. Just look at how much money the spec miata racers spend on blueprinted engines...just for an extra 5 hp over the guy next to them.
Technically due to variables in manufacturing, its possible to not gain ANY power from blueprinting an engine. If you've ever heard of factory freaks, thats what occuring there. Basically an engine with just the right type of tolerances, in just the right combination, outputing 10-40 more whp then the whole lot of normal produced cars. aka if you tried to blueprint an engine with already flawless tolerances, you won't be looking at any power gains.
#11
Hello,
I've heard people say that if an engine is blueprint ed then it will make more HP and stuff. What exactly is that and can it be done to a rotary?
Also, what are the historical things that people have done to rotary engines to make more power (less SC/Turbo)
Thanks for the knowledge!
I've heard people say that if an engine is blueprint ed then it will make more HP and stuff. What exactly is that and can it be done to a rotary?
Also, what are the historical things that people have done to rotary engines to make more power (less SC/Turbo)
Thanks for the knowledge!
Last edited by zacknolden; 08-01-2009 at 12:49 AM.
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