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Old 05-17-2018, 09:33 PM   #1
fleezy
Scooby Newbie
 
Member#: 436768
Join Date: Dec 2015
Chapter/Region: E. Canada
Location: Toronto
Vehicle:
2004 WRX
Silver

Default Cam gear locks

newbie question: why do we only lock the driver side cam gears on our ej205s when doing the timing belts?
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Old 05-17-2018, 09:42 PM   #2
Valarius Starchaser
Scooby Newbie
 
Member#: 459312
Join Date: Dec 2016
Chapter/Region: MWSOC
Vehicle:
2004 WRX Wagon
Hybrid 6MT Swapped WRB

Default

because the drivers side intake cam is the one that is ready to go into a death spin due to its location on the camshaft

EDIT: that little bastard has cut me more times then I am proud to admit
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Old 05-18-2018, 08:19 AM   #3
svynx
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Member#: 210371
Join Date: May 2009
Chapter/Region: MAIC
Location: York, pa
Vehicle:
2002 hybrid 16gxt
'03 Lifted TS

Default

When timing these engines, the passenger side cam lobes are not pushing on the valves/springs, so they spin freely. The drivers side, when timed correctly, is pushing on the valves/springs. This is why you have to lock them in place otherwise they spin.
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Old 05-18-2018, 10:05 AM   #4
fleezy
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Member#: 436768
Join Date: Dec 2015
Chapter/Region: E. Canada
Location: Toronto
Vehicle:
2004 WRX
Silver

Default

theoretically, if you locked both sides, could you slide the new belt on, without having to worry about lining up marks to the block, and just focus on belt to cam/crank?

Last edited by fleezy; 05-18-2018 at 10:25 AM.
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