any one know how tight the crank bolt should be?

 

It's 122 to 137 nm.
Pretty tight really! Leaving it loose causes grief with the pulley and keyway.

 

Thank you very much! it over 110nm will try and get it tighter this weekend!!!

Any cunning idea the hold the crank still!

 

Pull the starter out and lock the flywheel is the only certain way when it's in the car.

 

two 10 or 12 mm bolts opposite each other in the holes provided on the pulley. Put a tyre lever or similar in between them and then turn the crank till it locks onto the lever. Now tighten the bolt keeping the crank still with the lever.

 

Just to add to the confusion, I have copied the following directly from the Subaru workshop manual:

B: INSTALLATION
1) Install crankshaft pulley.
2) Install pulley bolt.
To lock crankshaft, use ST.
ST 499977100 CRANKSHAFT PULLEY
WRENCH
(1) Clean the crankshaft pulley thread using an
air gun.
(2) Apply engine oil to the crankshaft pulley bolt
seat and thread.
(3) Tighten the bolts temporarily with tightening
torque of 44 N·m (4.5 kgf-m, 33 ft-lb).
(4) Tighten the crankshaft pulley bolts.
Tightening torque:
177 N·m (18.0 kgf-m, 130.2 ft-lb)
3) Confirm that the tightening angle of the crankshaft
pulley bolt is 65 degrees or more. If not, conduct
the following procedures (1) through (4).
(1) Replace the crankshaft pulley bolts and
clean them.
Crankshaft pulley bolt:
12369AA011
(2) Clean the crankshaft thread using an air
gun.
(3) Tighten the bolt temporarily with tightening
torque of 44 N·m (4.5 kgf-m, 33 ft-lb).
(4) Tighten the crankshaft pulley bolt keeping
it in an angle between 65 degrees and 75
degrees.

Phil

 

177 nm

erm thats tight!

could this be why its a common problem with the woodruff key and the pulley being eaten........ cus its just not being done up enough!

 

I would say so yes.

Some of the figures banded about are way off the official figure, so i can only assume that it has been incorectly published elswhere at some point.

You will find that the pulley (if not tight enough) could start to Oscillate which in turn would wreck both the key & pulley and could also wreck the crankshaft keyway, which would then req'r a new crankshaft.