Rawze's Daily blog...

[dbl overdrive]

(05-13-2016 )Rawze Wrote:  

(05-13-2016 )Brock Wrote:  What caused you to do a inframe? Did you have a failure or was it just getting tires and you wanted to stay ahead of it?

IT WAS NOT THE HEAD GASKET. -- It was a leaky injector cup in the head, and some of the valves, you could see oil seeping from them in the intake, indicating the guides were starting to wear down. -- really, all it needed was a head, but at 1 million on it,.. I decided to do the whole thing as a preventative step.

If i could go back in time and do it again,.. I would have replaced the head at 700k miles as a scheduled maintenance item,.. The rest would likely have lasted 1.5 mil or more easily,.. when the next head was due again.

When this head gets 700k on it,.. I am going to replace it and continue on. It seems that 90% of all problems with ISX CM871's internal to the engine is in fact the head. It simply wears out at 700 - 800k no matter what you do. After that, it is simply a matter of time before it fails.

I totally agree with you on this, I had a cam bearing failure on the injector side. Also, valve guide were starting to leak as well.
The lower part of the engine looked great even though it had 959,000 on it. Mandate was removed less than 200,000 miles.
Anyways, it's a done deal now. I'm back up and running strong.