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Old 01-01-2005, 10:55 PM   #1
White 2.5rs
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Default cam sprocket removal

i tried searching, no luck
i need to get my cam sprockets off i got one off, the metal one, wasnt hard screwdriver, tap tap on a socket w/ my 1lb hammer and it was off

the plastic one is a different story
how do u guys do it?
thanks
alex
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Old 01-01-2005, 10:58 PM   #2
munkis
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Last time I did one (on a wrx) it was pretty stubborn, a plastic mallet got it off though, they are plastic so I wouldnt pry on them, but they are pretty strong, just tapped it off with the mallet.

Jay
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Old 01-01-2005, 11:06 PM   #3
White 2.5rs
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huh? i meant the bolt
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Old 01-01-2005, 11:17 PM   #4
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You have to find a way to Jamb the sprocket obviously. If you can't fabricate something to hold the hex part of it in the middle, you may have to try something like this:

Stick the metal cam gear back on. Jamb a piece of wood in between the two... or some soft material that wont damage the teeth. You can pry against it just enough to keep the sprocket from moving, BUT DO NOT pry so hard that you bend anything.

is the hex head so big that you can't find an adjustable wrench or something to hold it still? No one to borrow an impact gun from? Really, impact would likely spin that bad boy right off.

Last thought ... i dont remember if you can do this... but can you leave the gear on the cam for now, then once you get the cam off, just stick the cam in a vice?


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Old 01-02-2005, 10:25 PM   #5
munkis
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If the valve covers are off and the motor is out you can hold the cam with a wrench, 1 1/8th IIRC, if you look on the cam towards the front.

you have to get the cam gear off because it blocks one of the bearing caps.

If not, um impact gun.

Jay
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Old 01-03-2005, 12:01 AM   #6
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You an impact gun on it and hold it with a wrench... they like to fuse in there after heating up all those cycles. Took 600ft.lbs. impact to get them loose off RiftsWRX's first motor. Absolutely crazy.
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Old 01-03-2005, 02:58 AM   #7
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damn...
it worked w/ an impact wrench and a towel just holding it still
i didnt have it set for even half torque <was a pretty big wrench @ 110 psi>
atleast its off, time to change valve seals and put 'er back in

anyone know y when i broke some of the tight bolts that hold the cam in place <that cast allum plate that goes over it> a white liquid misted and shot out
my dad said that the bolt breaking loose can cause oil to shoot out and vaporize but this looked like water with a lot of air in it...

alex
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