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I already know what caused the issue, it was oil starvation to the top end caused by poor servicing and/or lots of short trips.Quote:
Originally Posted by Pedro_The_Swift
I should really have checked this area when I had the heads off before and had to replace the rocker gear :mad:
Steve
Not really poking you with a stick Steve,, honest! --but,,:p
daily drive kays?
type of oil?
time between services?
Its not often we get a valve stem seal failure,,
just trying to get some facts on why,,
and on how I can avoid it--;):D
PM maybe?:angel:
I always service my engines at 5K intervals and it is my daily driver.Quote:
Originally Posted by Pedro_The_Swift
I bought the engine second hand and was told it had only done about 50K since a full rebuild by TRS in Sydney.
I noticed a small coolant leak from the head gasket so I pulled the heads in Nov last year only to find a lot of gunk in the upper oilways and heat stressed rocker gear. As I said, I should have checked the valve area when I had the heads off then :mad:
SO the cause is poor servicing it seems. I note the wear on the valves was not even but all the seals were as hard as a rock, again I assume because of heat stress
Steve
would it be wise to look at bottom end bearings as well?
I thought long and hard about that and decided not to at the moment, possibly a bad decision.Quote:
Originally Posted by Pedro_The_Swift
The mains and bigends have their own direct high pressure feed from the oil pump I believe, so they are less likely to have been starved for oil.
The cam gets a lot of splash from the sump as well and it seems OK
So it's a bit of educated risk taking at this time :eek:
Steve