My money pit N54

martymil

Major General
Sep 6, 2017
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Down Under
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S65 1m
General question, what causes a spark plug tip to break off and fall into the cylinder, I’ve heard many different things from knock to loose spark plugs.
Bouncing of the limiter when doing drifts and burnouts, misfires, basically and bad or interrupted combustion cycle.
 

SLOWESTN54

Captain
Feb 9, 2021
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23
B.C. Canada
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2007 E92 335i
on how much boost and timing was this done?
I just made a dragy run 5.98 on 23PSI and 11 degrees of timing.
IMG_7202.png

Is this fast ?
 
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Jern54

Sergeant
Oct 18, 2019
289
1
171
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Netherlands
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E91 N54 335i
It misfired during the pull and it spitten some coolant out the reservoir as well. Ive added a coolant pressure sensor now thanks to Reflex. This indicates head lift immediately.
 
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RNM

Corporal
Jun 3, 2019
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It misfired during the pull and it spitten some coolant out the reservoir as well. Ive added a coolant pressure sensor now thanks to Reflex. This indicates head lift immediately.
Did you have stock head bolts or upgraded headstuds?