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Old 03-11-2011, 12:34 PM   #1
TRSCobra
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Default 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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Old 03-11-2011, 01:16 PM   #2
the suicidal eggroll
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Quote:
Originally Posted by TRSCobra View Post
has anyone running an equal length header had ringlands crack?
Yes
#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.
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Old 03-11-2011, 02:07 PM   #3
A-man07
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Well-tuned cars live longer no matter what the mods.
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Old 03-11-2011, 02:10 PM   #4
stretchedk7
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^true so true.
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Old 03-11-2011, 05:32 PM   #5
boost4life
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I think EL header is a step in the right direction, Nothing other then a good tune can prevent that.
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