1987 Civic with d13_a2 1.3L

Hey,
I have an 87 civic with the d13_a2 12Valve carb'd engine. It has
179,000 miles on it. It used to belong to my mom and she bought it
brand new so i know all of the regular maintanence has all been done to
schedule. My question is, now that it's getting up there in milage, is
there anything that is a weakpoint in these engines that i should watch
for? It has the original head gasket, [head has never been off] and
i've done the timing belt/water pump at 60k intervals.

I just did the timing belt/waterpump/crank & cam oil seal. It doesn't
leak a drop of oil [Mobil 1 5-30], or burn any and want to keep it that
way.

Thanks