THUBER

I am looking at a nice clean 87 911 cab with 60000 miles on it, the owner claims to have had any and all regular service done religiously, the engine has valve clatter, enough to be noticed by me and I havent had my 69 911 running in a long time.

When asked whether he has had the valves adjusted, he responded that by 87 they dont need adjustments............


car is clean and asking price is 24,900

87slant-nose-cabriolet

Lasttime i looked at my valve adjustment
proceedure for my 87 911 cabriolet slant
nose turbo look, mine was supposed to be
manually set at 0.010 mm or 0.004 in at
aprox 68f. maybe the porsche people come by
and do his when he,s asleep. seriosly
when did he have his last 15k mi inspection?
keith

Mark Kiwior

All 911's through 1989 require valve adjustments. One recommendation I heard was every 15,000 miles or once a year. I don't know when they went to hydraulic valves but it definitely was not before 1989.

Bill Verburg

The first North American air cooled to not require valve adjustments was the '95 993. The valves should NOT make enough noise to attract your attention. 3.2 Carrera had valve guide issues which lead to a noisy valve train even after proper adjustment.

Dial 911

First of all, that adjustment figure is 0.1mm, not 0.010mm as Keith wrote.

Second....the valves certainly do need adjusting on an '87 as has been correctly stated. But, if you still get a noisy valve train after correct adjustment, your valve guides may be shot.

Some 3.2's have such bad valve guide/valve stem wear, you can easily rattle the valve back and forth when it's off the seat. This condition will be noisy, and if severe enough, the valve will drop and lunch the motor.

87slant-nose-cabriolet

sorry i got a little busy with my 0,s
.004 was right!