Question about Pontiac Sunfire
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Posted on Jan 02, 2017
HINT: The "torque pattern" on ALL cylinder heads is start in the center and work your way toward the ends. The specifications below are "torque-to yield" or "torque angle" specs. When in doubt, about 65 Ft. Lbs. will work on pretty much ANY aluminum head. The main point is to get them EVEN to prevent warpage.
Posted on Nov 20, 2011
for the 2.2L OHV:
(pully 8 4 1 5 9 <-- long bolts @ 63Nm (46ft/lb)
side ) 7 3 2 6 10 <-- short bolts / 10 is the stud @ 58Nm (43ft/lb)
for the 2.4l dohc are as follows:
(pully 9 3 1 5 7
side) 10 6 2 4 8
bolts 1-8 torqued to 65Nm (40ft/lb)
bolts 9-10 torqued to 40Nm (30ft/lb)
then (either engine) give each an additional 90° (¼) turn
it's best to do the tightening in stages, you don't want to go completely tight on the first pass or there will problems and you'll get to do it all over again
Posted on May 24, 2010
looks like there is special sequence to reassemble and tightening, a quick note replace any bolts that have two punch marks.tighten as follows: x x x x x 10 4 2 6 8 x x x x x 7 5 1 3 9 torque all down to 15 ft lbs torque to 30 ft lbs plus 90 degrees. Good luck!
Posted on Sep 18, 2009
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