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+--- Thread: 870 new head gasket no other work done (/showthread.php?tid=2920)
870 new head gasket no other work done - tree98 - 03-25-2018
I'm just curious how long would a new head gasket last in an 870 If you didn't do an inframe and set the liner heights? If you just unbolt the head put a new gasket in and torqued it down. I'm not looking to do this, it came up in a conversation with my buddies.
RE: 870 new head gasket no other work done - dhirocz - 03-25-2018
...that would really depend on what caused it to fail...without knowing the specifics, I would say not very long.
RE: 870 new head gasket no other work done - Rawze - 03-26-2018
(03-25-2018 )tree98 Wrote: I'm just curious how long would a new head gasket last in an 870 If you didn't do an inframe and set the liner heights? If you just unbolt the head put a new gasket in and torqued it down. I'm not looking to do this, it came up in a conversation with my buddies.
The only time I have seen it is when the head was under-torqued by some moron & it failed a few days after.
Otherwise, I have never seen a head gasket failure on a cummins without a liner issue. It is mostly nothing but a pipe dream to think only a head gasket fails on a cummins. Someone is simply wasting their time and money replacing only a head gasket unless someone had recently worked on it and made a mistake with the gasket itself or had under-torqued the head.
I.E.> Your asking for nothing but more problems and another failure if that is all you change except under very rare circumstances. Checking liner height after a head gasket failure will also easily fool many shops into thinking it was only the gasket. They are always wrong even after being warned, and in a few months later, all the money and time replacing it is wasted because it has to be re-done.
Here is an example where liner height was good but it still had a dropped liner ...
http://rawze.com/forums/showthread.php?tid=899&pid=7648#pid7648
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