[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [New Search]
Mark wrote:
>Nasty! Did they give you any warning of imminent doom? did the valve lash
>tighten up prior to the destruction?
Nope, no warning what so ever. I was pretty thorough about checking them, and
none of them were tightening. I think the lash had been checked about 600
miles prior, on it's oil change day. In my case both engines lost the head of # 4
exhaust valve though.
>I heard that they always do and that at
>the first sign of a tightening valve you should monitor the situation
>carefully and if it tightens again, rebuild the head.
I would have watched it more, and maybe not used it on the highway if I had
known it was getting ready to go. At the time I was driving about 75 miles a
day in it, with about 65 of those at freeway speeds ( 70 to 75 mph to keep from
getting run over). It was one of those deals where the engines had unkown
mileage, ran very well, and were being run on low octane fuel at highway speeds.
At those speeds the valve doesn't get a chance to cool, so it starts to warp
then failure happens when you least expect it. I used the results more as a
learning experience, and started using better quality fuel in it, with much better
results. I hope this helps.
Bob 65 Notch S w/ Sunroof
69 Square AT-the baby suburban
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org