Quote:
Originally Posted by Dick Shift
Boxster engine advice needed.
Goal to build one good engine out of three 2.5 Boxster engines I have. Two had a cly. sleeve move down toward the crank. All IMS bearings good BTW. OK questions:
1. Prepping the one good block for new rings. Looks like air cooled Alusyls cly coating? Conventional honing? OR Use Scotch Brite pads buy hand, as we do w/Alusyls.
2. Was my pulling head studs out of bearing carrier, when torquing down heads in my first 2.5 head gasket replacement common? See above. Wondering if I need to go threw all the trouble of Time Serts? Never herd of anyone else having that happen to them. Factory head torque specks to high?? maybe? Sure seem like it to me.
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I have never heard of crank carrier threads pulling out, the 1st design head bolts were 234mm long, soon updated to 230mm 10.9 grade, I wonder which you have? Be sure your head bolts have Torx55 heads. If your other crankshaft & housing assemblies are in better condition I would use it while keeping the crank assembly "married" to each other. I always clean & chase all threads before assembly. I have always used LN "Nickies" sleeves for rebuilds so all I can advise for cyl prep is don't remove any of the lockasil & use Joe Gibbs break-in oil for initial start up.