These are torque to yeild bolts, U MUST REPLACE THE HEAD BOLTS, then do this procedure
:
1st pass tighten to 30nm (22 ft lbs), 2nd pass turn bolt head 90 degrees, 3rd pass turn bolt head another 90 degrees 90 degrees is 1/4 of a full circle.
36 FT LBS.U NEED TO TORQUE THEM STATING FROM THE INSIDE AND WORKING YOUR WAY OUT.RECHECK THE TORQUE WHEN U HAVE DONE THEM ALL
SOURCE: need 2 know torque specs 4 2001 pontiac sunfire
cylinder head bolts short bolts 43 ft lbs long bolts 46 ft lbs.
rocker arm bolts 22 ft lbs.
SOURCE: 2001 Toyota Echo Wheel Bolt Torque?
Looks like Corolla and Echo have the same spec. 76 ft-lb.
SOURCE: Head bolt torque settings...
Stage 1 = 29Nm(21 lb ft/3.0 kg-m)
final = 64Nm(47 lb ft/6.5kg-m)
Buy new bolts first tho
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