I hate to say it, but new parts can sometimes be bad.
Brad Fornal wrote:
>This head has less than 50 miles on a COMPLETE rebuild!!!
>
>Chris K wrote:
>
>
>
>>Yup, it sounds like severe valve seat recession to me. Pull the head
>>and have hardened valve seats installed at your friendly neighborhood
>>machine shop. While your'e at it, try to figure out why #4 is getting
>>that hot.
>>
>>Chris K.
>>
>>Rick Fisk wrote:
>>
>>
>>
>>>Sounds like the valve seat (or the valve) is going away on you. Measure the
>>>height of the valve stem on the offending valve (with the valve fully
>>>closed) and compare it to the others. I'll bet it's "taller". You're gonna
>>>have to pull the head anyways. :-)
>>>
>>>Rick
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