Curious... tech guys help
10-13-2006, 03:13 PM
#3
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I believe it is the measured distance between the piston at TDC and the head (not the combustion chamber but the flat part of the head that is still in the bore). Advanced tech's please chim in and correct me if im wrong.
10-13-2006, 03:40 PM
#4
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This should tell and show you everything you want to know:
http://www.chevyhiperformance.com/te...earance_guide/
http://www.chevyhiperformance.com/te...earance_guide/
10-13-2006, 05:37 PM
#5
That is a great article. A quote from the author that pretty much sums it up:
Originally Posted by Jeff Smith
The quench area is the tight area between the flat portion of the piston and the flat portion of the combustion chamber in a typical wedge-style chamber. As the piston reaches TDC and the mixture begins to burn, the air and fuel located between the piston and the head is squeezed or squished out into the dished portion of the combustion chamber. Think of the turbulence that occurs when you smash a tomato with a large mallet and you get the idea. With a flat-top piston, this squish area can be very tight. This is also the tightest clearance between the piston and the cylinder head.