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Old 11-14-2012, 12:30 AM   #1
MrHankey
Scooby Newbie
 
Member#: 90968
Join Date: Jul 2005
Chapter/Region: VIC
Location: Victoria, BC, Canada
Vehicle:
2003 WRX
WRB

Default Are These Camshaft Journals OK

JDM WRX EJ205 head (driver's side .. er ... passenger's side in Japan)

Exhaust (head side):


Exhaust (Cap):


Intake (head side):


I forgot to take a photo of the intake cap (includes AVCS solenoid) but it looks the same as the exhaust. It seems like the journal would have to be out of round and misaligned with the cap for it to not wear the cap the same as the journal in the head. Cams looked perfect.

Thanks!
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Old 11-14-2012, 10:30 AM   #2
UK-Wagon
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Member#: 232430
Join Date: Dec 2009
Chapter/Region: RMIC
Location: On the Left side
Vehicle:
555 XTi
1 AW & 1 CGM

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Yes that is typical of higher mileage.... you can smooth that area out if you want. You need a purple/red scotch brite pad and softly rub that area to take away the sharp edges. Or some 2000 grit sand paper. Dont do too much, just enough to smooth it out a little.
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Old 11-14-2012, 10:38 AM   #3
MrHankey
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Location: Victoria, BC, Canada
Vehicle:
2003 WRX
WRB

Default

Any theories on what causes this? The only thing that comes to mind is a cold start, where the oil film that would normally separate the cam from the journal has been displaced due to the tension in the timing belt. Still does not explain why the matting cap is not similarly worn.
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Old 11-14-2012, 11:57 AM   #4
bako
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Member#: 226211
Join Date: Oct 2009
Location: Europe
Vehicle:
2002 impreza WRX JDM
blue

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do not worry about it. yes, it's from frequent starting, low distance travel...
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Old 11-14-2012, 03:21 PM   #5
MrHankey
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Join Date: Jul 2005
Chapter/Region: VIC
Location: Victoria, BC, Canada
Vehicle:
2003 WRX
WRB

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Both heads are headed to a machine shop to have the valves seated, guides replaced etc. thanks to a bent set of exhaust valves in #3 (accident stalled the camshaft). I'll see what they say about it.
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Old 11-15-2012, 07:48 AM   #6
bako
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2002 impreza WRX JDM
blue

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do not waste money on those journals, just reuse them without remachinenig and line boring
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