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valve float with cutouts?!

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Old Jul 12, 2008 | 07:04 PM
  #1  
red02SS's Avatar
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Default valve float with cutouts?!

Will putting an exhaust cutout on your car cause valve float(valves dont fully close or open)since it eliminates the backpressure in your exhaust system?
 
Old Jul 12, 2008 | 08:28 PM
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Default RE: valve float with cutouts?!

Short answer: No.

 
Old Jul 12, 2008 | 09:02 PM
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Default RE: valve float with cutouts?!

sweet, haha thanks
 
Old Jul 12, 2008 | 10:29 PM
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z28pete's Avatar
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Default RE: valve float with cutouts?!

Why are all these people worried about not having enough back pressure? Valve float comes from over revving the engine, not from the type of exhaust.
 
Old Jul 12, 2008 | 10:32 PM
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Default RE: valve float with cutouts?!

the pressure of the springs is what determines if you will float, this has nothing to do with exhaust backpressure.
 
Old Jul 14, 2008 | 03:34 PM
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Default RE: valve float with cutouts?!

thanks guys, but will having little to no exhaust backpressure hurt anything at all?
 
Old Jul 14, 2008 | 05:16 PM
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Default RE: valve float with cutouts?!

Read the link below, it will explain some exhaust stuff. The idea is to run as little backpressure as possible. The "burned valves" scare comes from the fact that when you make your exhaust more free-flowing, less backpressure can make your engine run with a leaner fuel-to-air ratio. Older engines (that don't have a computer to adjust for fuel richness) would need to have the stock carb richened up a little, both for optimum performance reasons and to compensate for the lean issue (which is actually one in the same).
http://www.aaxel.com/tech_back_pressure.php
 
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