Is this the quench pad? The edge of the combustion chamber to the bottom of the head?

THanks



Image Taken from Endyne's site

 

yep, and more is better in high compression All-motor apps

 

so you're saying the deeper it is from the bottom onf the head the better?

 

from what i recall, if there isnt enough quench area, the power will start to drop off at high RPMs.

hmm, does this make any sense, i just recall some guy telling me thats why the dyno is dropping off so fast

 

doesnt sound right. its for compression and GSR's are flushed.

 

The closer the piston gets to this quench area the faster it will squish the air/fuel mixture towards the center of the cumbsution chamber. This "squishing" causes much turbulence in the CC that aids in cumbustion efficiency as well as reduces the likelihood of detonation. That is how my 1999 Yamaha R6 motorcycle can run a stock 12.4:1 compression while running on a minimum of 86 octane on carbs without detonation.

more quench = more turbulence = more efficiency= more power

the Pirate

 

so can you mill that part down and try to get it closer to the valves?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93H22ACX &raquo;</TD></TR><TR><TD CLASS="quote">so can you mill that part down and try to get it closer to the valves?</TD></TR></TABLE>

Milling the head brings that quench pad closer to the piston. but remember it also reduces the cumbustion chamber volume so you get higher compression as well as retarded cam timing.

Welding the chambers extends the quench pad further toward the center of the cumbustion chamber. this also raises the compression but does not retard the cam timing here is a pic: --X--

the Pirate

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PirateMcFred &raquo;</TD></TR><TR><TD CLASS="quote">The closer the piston gets to this quench area the faster it will squish the air/fuel mixture towards the center of the cumbsution chamber. This "squishing" causes much turbulence in the CC that aids in cumbustion efficiency as well as reduces the likelihood of detonation. That is how my 1999 Yamaha R6 motorcycle can run a stock 12.4:1 compression while running on a minimum of 86 octane on carbs without detonation.

more quench = more turbulence = more efficiency= more power

the Pirate</TD></TR></TABLE>

damn good info ! , now i know the difference and benifits of welding the chambers and milling the head.