First, this is actually regarding an M10 head, but given the similarities between the M10 and M20 heads, especially pertaining to my question, I posted here given all the knowledge and traffic present.
Quick summary: M10 head with a billet 284* cam, HD rocker arms, brand new rocker shafts, brand new everything that goes into the head. I'm currently assembling this head and noticed that two of the rocker feet are hanging off the edge of the cam lobes. A few others are sitting right at the edge of the lobes. The cam and rocker shaft thrust plate is installed and not worn. All rocker arm locating clips are installed.
I will include a few pictures for examination. I can't see running the head like this... I believe this would cause accelerated and uneven wear.
Have other people run into this issue? Given that the rocker arms seem to be visually centered on the valve stems indicating that the rocker arm locations are correct, it seems that the cam is to blame. As though the lobes were cast in the wrong locations. But they're inconsistent in the degree and even the direction that they're wrong.
Thoughts? Thanks!
Quick summary: M10 head with a billet 284* cam, HD rocker arms, brand new rocker shafts, brand new everything that goes into the head. I'm currently assembling this head and noticed that two of the rocker feet are hanging off the edge of the cam lobes. A few others are sitting right at the edge of the lobes. The cam and rocker shaft thrust plate is installed and not worn. All rocker arm locating clips are installed.
I will include a few pictures for examination. I can't see running the head like this... I believe this would cause accelerated and uneven wear.
Have other people run into this issue? Given that the rocker arms seem to be visually centered on the valve stems indicating that the rocker arm locations are correct, it seems that the cam is to blame. As though the lobes were cast in the wrong locations. But they're inconsistent in the degree and even the direction that they're wrong.
Thoughts? Thanks!
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