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cox number 6 cylinder Empty cox number 6 cylinder

Post  mitchg95 Tue Jan 17, 2012 12:22 pm

hey i just got a new cox .049 today for $7.50 it looks great but it has a number 6 cylinger with a low compression umber 3 cylinder head, can anyone tell me about the #6 cylinder?
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Post  nitroairplane Tue Jan 17, 2012 12:27 pm

That is a pre 1996 QRC cylinder.
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Post  mitchg95 Tue Jan 17, 2012 12:35 pm

ok sounds good, i this engine does not seem to have sub-piston-induction
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Post  nitroairplane Tue Jan 17, 2012 12:37 pm

No it does not.
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Post  mitchg95 Tue Jan 17, 2012 12:37 pm

ok
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Post  RknRusty Tue Jan 17, 2012 12:45 pm

The reason for no SPI is so it can run with a muffler. SPI + Muffler = poor performance.

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Post  mitchg95 Tue Jan 17, 2012 12:54 pm

that actually akes alot of sence, how much would the mufflers be for this engine
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Post  microflitedude Tue Jan 17, 2012 1:00 pm

mitchg95 wrote:that actually akes alot of sence, how much would the mufflers be for this engine

Around 10 $15.
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Post  mitchg95 Tue Jan 17, 2012 1:05 pm

perfect ill look into it
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Post  RknRusty Tue Jan 17, 2012 1:42 pm

Just to be clear, any engine, with or without SPI, will develop more power without a muffler. But in a situation when you must use a muffler, it should go on a non SPI engine for best performance.
So what I'm saying is, don't rush out and get a muffler just because the engine is non-SPI.
Does that make sense to you?

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Post  nitroairplane Tue Jan 17, 2012 1:43 pm

And if you tuna throttle ring I recommend SPI as you will get a lower idle.
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Post  microflitedude Tue Jan 17, 2012 1:48 pm

nitroairplane wrote:And if you tuna throttle ring I recommend SPI as you will get a lower idle.

Tuna? Eck! Very Happy coughautocorrectcough

Will SPI help lower idle with a throttle/muffler combo?
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Post  mitchg95 Tue Jan 17, 2012 2:03 pm

RknRusty wrote:Just to be clear, any engine, with or without SPI, will develop more power without a muffler. But in a situation when you must use a muffler, it should go on a non SPI engine for best performance.
So what I'm saying is, don't rush out and get a muffler just because the engine is non-SPI.
Does that make sense to you?

ya that makes sence to me, im not in a hurry to gewt a muffler yet
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Post  Mudhen Tue Jan 17, 2012 2:18 pm

.
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