A little update on my latest "breakdown":
Pulled the head off last night, front 1/4 of piston #3 is vaporized ! Head
looks fine though. Any clues to look for to determine the cause ?
I did notice that the head of the hex screw on the throttle shaft holding
the butterfly (rear carb) was sheared off. Why that would happen is a
mystery by itself, but would such a tiny head screw crumble a piston if
sucked in ?
Anyway, i'm looking to buy a U20 engine or possibly a low windshield 2000
project car (running) while i pull the motor out. I think it's trashed.
Thanks-
Stephan.
>
> Howdy,
>
> I think i' ve paid my dues to the roadster God. In the last
> 6000 miles, my roadster has seen two 5th gear neutrals, new
> chains, new 1/2 rear main seal and a rebuilt head (due to a
> dropped valve seat). Also, falling in the minor category, new
> recored radiator, complete brake job, wheel bearings, starter
> and master/slave cylinder. I'm sure i'm forgetting something
> here. Why mention all this ? Well, while driving home last
> night, i heard a horrible metallic rumble coming from under
> the hood while on the 92W 101S connector. The roadster stalls
> immediately and i'm stuck on the connector while cars fly by
> me. Luckily, the connector is sloping down so i manage to
> coast to an open spot, safe from all the crazed commuters. No
> visible damage under the hood but since i don't have my tool
> box i can't wrench anything. After waiting 2 hours for a tow,
> i'm back home ready to start investigating. I pull the cam
> cover and don't see anything wrong. The engine turns manually
> but not a complete cycle. I pull the spark plugs one by one
> and #3 is soaked wet. With a flash light, i peek in there and
> Oh NO, i see little chunks ! Looks like another dropped valve
> seat ? broken rings ? More to come when i take it apart.
> Is this just bad luck or what ? Why causes the valve seats to
> drop ? Anyone else with this problem ? Maybe i'll get them
> all welded if it turns out to be the problem.
> Who has put 50K or 100K trouble free miles on a roadster ?
>
> Stephan
> '69 2000 BADROC
>
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