My question is about dropping a sleeve. My radiator sprung a leak 8 months ago, and i first noticed it when the engine overheated. Fixed that problem, engine seems to be fine. Water pump hose went about a month ago, engine temp rose again. Fixed hose, no more leakage and motor has been fine ever since. The question: Is the threat of dropping a sleeve and loosing the motor only while the engine is actually overheating, or, am I still in danger of loosing the motor?

 

The whole trick with any sleeved alloy engine id to not get them hot. If you are wondering if you stand a chance of loosing a sleeve after all this stuff has happened, no. If it is going to drop it will drop when hot and that is the end of the engine.
I would make a point of making sure you have all you leaks taken care of and are using losts of DexCool coolant.

 

done, and done... I always use 75% dexcool 25% h2o mixture... i've heard anything else is bad for head gaskets. I know theconcept of the alloy and sleeve expanding differently hereby causing major problems, i just didn't know if it caused underlying prob's or not.
Everything has been replaced now, minus head gaskets, so i'm in the clear, for now.

 

If you are in a warm climate, cut back on the the % of coolant or the adverse will happen and you'll run hotter.
You can also add some of the new coolant additives for even better results.

 

thanks mike. will do today. your info is always appreciated.