|03-11-2011, 12:34 PM||#1|
Join Date: May 2008
Location: Gig Harbor, WAVehicle:
`12 MZ3 Skyactiv
'12 C300 4matic Sport
Ringland failures with ELH?
I've read on a few forums that a possible cause for ringland failures on cyl's 2 and 4 is due to higher EGT's with the stock unequal length manifold.
If this is true, has anyone running an equal length header had ringlands crack?
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|03-11-2011, 01:16 PM||#2|
Join Date: Jan 2004
Location: Broomfield, COVehicle:
#3 is a common one to crack too.
People have tried to blame the excessive #4 failures on everything imaginable. What comes to mind is:
#4 has longer exhaust manifold runners which leads to higher EGTs
#4 receives fuel later in the path (fuel gets to other cylinders first so the pressure has dropped by the time it gets to #4)
The intake manifold flows more air to #4 so it runs consistently leaner
The factory ECU runs more timing on #4 than the others so it will be the first to knock and trigger the ECU to pull timing (the ECU can hear knock better on #4 than the others because that's where the knock sensor is)
Last edited by the suicidal eggroll; 03-11-2011 at 01:28 PM.
|03-11-2011, 05:32 PM||#5|
Join Date: Nov 2004
Location: Marquette,mi areaVehicle:
09 WRX stg 2+
Lost the boxer rumble
I think EL header is a step in the right direction, Nothing other then a good tune can prevent that.
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