My brother's mustang has a professionally rebuilt 1967 200 in it. I don't know how long ago it was rebuilt, but I pulled the head on it and there was no ridge in the cylinders and the hone marks were still plainly visible. I bought it under the impression it had minimal mileage. The pistons had 0.040 stamped in them. I pulled the head because when I installed it in the car and cranked it up, some dark spots appeared at the head-to-block seam on the ignition side. I had given the assembled engine a fresh coat of paint so these spots stuck out like sore thumbs and it was clear that something was seeping through the head gasket. Everything looked good so I put on a new fel-pro gasket and torqued the head bolts exactly per the shop manual's instructions.
The engine runs very well, smooth and even and compression is around 205 psi for all cylinders. I've closely monitored for more leakage, and sure enough after running the engine for a while there are some tiny bubbles here and there along the gasket and it looks slightly moist. There are one or two places where it looks like fluid has collected enough to run down the side of the block, but it must be a tiny quantity because it never looks fresh and there is no collected liquid around the oil pan. The oil is clean and smells normal and has no bubbles on the dipstick. I can't tell what fluid is seeping out because the quantity is so tiny.
Also, after idling for longish periods of time, it always smokes when I accelerate. If I idle briefly, I don't see any smoke though, nor do I see smoke when cruising. The engine sat unused out of a car for at least a year, probably a good bit longer (3 years? 5 years?).
I suspect the smoke is the fault of hardened up valve stem seals (hopefully not valve guides; shouldn't be if rebuilt recently!) and don't know what to make of the head seepage. Do you guys have any wisdom or suggestions for dealing with either of these issues?
Thanks a lot!
The engine runs very well, smooth and even and compression is around 205 psi for all cylinders. I've closely monitored for more leakage, and sure enough after running the engine for a while there are some tiny bubbles here and there along the gasket and it looks slightly moist. There are one or two places where it looks like fluid has collected enough to run down the side of the block, but it must be a tiny quantity because it never looks fresh and there is no collected liquid around the oil pan. The oil is clean and smells normal and has no bubbles on the dipstick. I can't tell what fluid is seeping out because the quantity is so tiny.
Also, after idling for longish periods of time, it always smokes when I accelerate. If I idle briefly, I don't see any smoke though, nor do I see smoke when cruising. The engine sat unused out of a car for at least a year, probably a good bit longer (3 years? 5 years?).
I suspect the smoke is the fault of hardened up valve stem seals (hopefully not valve guides; shouldn't be if rebuilt recently!) and don't know what to make of the head seepage. Do you guys have any wisdom or suggestions for dealing with either of these issues?
Thanks a lot!