Camshaft timing

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regencyred
In Neutral
Posts: 21
Joined: Fri Apr 01, 2011 8:02 pm

Camshaft timing

Post by regencyred »

Howdy,

Just looking at my timing belt on my 91 Legacy 2.2 N/A.

The belt looks very old and is stamped Made in USA.
not sure if this means it's a replacement. the mileage is 169K.

Anyway, when the crank is at TDC, marks aligned, the cams are
both about 20 degrees before the notches (with paint) come to TDC.
The Arrows stamped on the cam sprockets are at TDC, but
this is wrong, correct?
Can the engine run with this much timing error?
I think it lacks some power but runs pretty good.

Thanks for your help, Craig NY
91 "Misty Dawn" Legacy wagon
wtdash
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Joined: Fri May 04, 2007 4:09 pm
Location: N. ID

Re: Camshaft timing

Post by wtdash »

Hi,
Check this LINK for the FSM. Download and view the Timing Belt install instructions.

Main points:
- Use the mark on the BACK of the crank sprocket - not the arrow on the front, and use the marks on the cam pulleys - not the arrows on front to match your T-belt.
Image

Count the teeth (per the FSM) on the belt between the crank sprocket mark and cam sprocket mark.

GL,
Td
Turbo Subies:
'87 GL-10 Turbo - SOLD
'90 BJ EJ22T/DOHC & 5speed swap - SOLD
'04 FXT, Forged internals, VF39, STI TMIC, Cobb AP- SOLD
'93 Legacy SS - 5-speed, SOLD :-(
'02 WRX -SOLD
'96 BD-turbo'd-SOLD
'98 SF - NA-T
Binford
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Re: Camshaft timing

Post by Binford »

This is for installation purposes only. You will almost NEVER get these to line up by rotating the engine after the engine has ran. Everything rotates differently. You CANNOT "check" if your timing belt is correctly installed unless you remove it and start from scratch. If you do this, buy a new belt! (and a water pump) :lol:
'91 5MT SS-TD04, WRX TMIC, Bosal twin dump, Spec LW flywheel/pressure plate, FCD, Walbro fuel pump-RIP
'93 5MT N/A wagon, over 400,000 miles!-Gone, parts lived on
'94 Auto SS-vf24, WRX TMIC, Bosal twin dump, Meth kit coming soon!-Now RWD!
hitzkrieg
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Re: Camshaft timing

Post by hitzkrieg »

The camshafts rotate at half the speed of the crankshaft, therefore the timing marks will line up every second time the crank rotates. Unless something is wrong and the belt is jumping, everything will line up with at most 2 complete turns of the crankshaft. The marks on most replacement timing belts are for installation purposes only
- 94 Touring Wagon, Quicksilver Metallic 95k miles
Legacy777
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Re: Camshaft timing

Post by Legacy777 »

Just to clarify, there is a difference between the marks on the cam/crank pullies and the marks on the timing belt. As mentioned the marks on the timing belt will almost never line up exactly with the marks on the pullies. However the marks on the timing belt will line up with the marks on the timing belt covers & oil pump, as well as the marks on the pullies & crank sprocket.
Josh

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1990 Legacy (AWD, 6MT, & EJ22T Swap)
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