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Old 10-04-2008, 11:16 PM   #1
parkes
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Member#: 166898
Join Date: Dec 2007
Chapter/Region: W. Canada
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Vehicle:
1994 T leg SS
ABM

Default Why is one sprocket solid and the other metal?

These are 1999 Subaru RS SOHC heads, Why is one cam sprocket plastic the other metal?

Also What is the Correct procedure to remove the timing belt to remove the cam sprocket? then correct torque specs?





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Old 10-05-2008, 12:57 PM   #2
FuJi K
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MY99 GF4 JDM 6spd
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I see a couple of interesting things. I see a turbo water pump, I see a different chassis, I see wrapped headers, I see FMIC piping, I see different alternator.

I believe it was easier to cast a sproket all metal than it was inserting little medal pieces onto the carbon/graphite?? sprokects??

If I plan on reusing the timing belt, I usually rotate the motor until the SINGLE notches of the crank and cam gears are UP. I then take a paint pen and mark my timing belt with those notches. I remove the bottem passenger pulley first. Then I remove the teethed pulley next to the waterpump. The driverside cam gear MAY SPIN, you are fine if it does.

IIRC the torque on the cam gears are 36ft lbs??
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Old 10-05-2008, 01:36 PM   #3
silentt
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What the **** are you doing?
Quote:
Originally Posted by FuJi K View Post
I see a couple of interesting things. I see a turbo water pump, I see a different chassis, I see wrapped headers, I see FMIC piping, I see different alternator.
It has an ej22t block on those heads, originally from a 99 RS. He bought that motor and is putting it in his legacy.
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Old 10-05-2008, 06:08 PM   #4
parkes
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Quote:
Originally Posted by silentt View Post
What the **** are you doing?

It has an ej22t block on those heads, originally from a 99 RS. He bought that motor and is putting it in his legacy.

A guy i met up over on legacy central came over, We looked at the engine talked it over and he phoned up his subaru Tech Guy, My best option is to Use my EJ22T Cam gear sprockets to be compatible with my Cam gear sensor, He scanned my ECU told me my codes and this is my best option right now, TO change these sprockets to my EJ22T ones, as the cam gear sprocket has different points on the back.
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Old 10-07-2008, 10:43 PM   #5
ballitch
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I tried to use EJ22 cam sprockets on my EJ25 SOHC heads, they dont work, well the driver side will, but not the pass. side. You need to use the EJ25 SOHC pass. side sprocket. I just bought both off ebay and called it good.

IIRC, the cam sprocket bolt torque is 56 ft lbs. If you search for "cam bolt specs" or "head bolt specs" the number should be in one of those two threads.


As for the block, hell I couldnt tell it was an EJ22T just by looking at the front...


~Josh~
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Old 10-08-2008, 03:55 PM   #6
parkes
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ABM

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Quote:
Originally Posted by ballitch View Post
I tried to use EJ22 cam sprockets on my EJ25 SOHC heads, they dont work, well the driver side will, but not the pass. side. You need to use the EJ25 SOHC pass. side sprocket. I just bought both off ebay and called it good.

IIRC, the cam sprocket bolt torque is 56 ft lbs. If you search for "cam bolt specs" or "head bolt specs" the number should be in one of those two threads.


As for the block, hell I couldnt tell it was an EJ22T just by looking at the front...


~Josh~
Thanks, Yes i just swapped Drivers Side ones.

Did you do that to solve your Cam gear sensor problem? and did it?
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Old 10-22-2008, 08:15 PM   #7
ciper
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For future reference, if you are having trouble loosening the cam gear bolts use an old timing belt and some vice grips, wrap the belt around the pulley then around the crank and vice grip the belt together. It's a perfect "chain wrench" and if done right can even withstand an impact gun.
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