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86Carrera,
An example of what a PPI is not worth and head studs:
I located an 87 cab in Chicago. Had an experienced tech go out there and do pre purchase inspection or PPI:
and he said the car was 99%.
I flew out there and drove it 1200 some miles home. When I did "my PPI": I found a lose strut, noisey B&B muffler, non functional blinker, bad dme relay, flat on a front tire, bent front rim, broken CV boots, two bent rear rims, spongy brake hoses, oil leaks,
busted convertible top spar, .... I can go on and on.
So much for PPI's, do them yourself.
I heard what sounded like a noisey valve adjuster. When I had the valve covers pulled off for a adjustment the broken head stud was not "evident" .... it did not jump out and land of the floor. The tech helping me with the adjustment just happened to be experienced enough to put a socket on each head stud and then it fell out!
Since the engine had 90k miles on it, we:
replaced all studs with 993 studs,
ring job,
valve job,
new clutch package and flywheel,
new starter,
new alternator,
new oil hoses,
plugs,
cap, rotor and wires,
a few tricks on the valve pin shafts,
and other "stuff".
What the heck, in for a penny, in for a pound.
And I had the once (I hope) life time experience of pullin the motor (without a party, however plenty of Becks on hand for myself) and putting it back in without a lift; there are plenty of DIY how-to's posted.
But, it now runs like new!
So, when you adjust the valves, check each stud "personally". By the way the cause of failure on this puppy's broken stud was corrosion that started with a small nick in the stud's outer coating (so much for OE engineering) and I found a few others waiting in line.
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