Valve Jobs OHV vs SOHC engines

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carbide@egine.com - 13 Jan 2007 22:53 GMT

Just curious- anyone know what's the typical mileage before a valve job
is needed? The original OHV V6 has cast iron heads, the SOHC has
aluminum heads. In ancient times, seems like it was normal to do a
valve job at 100,000 miles. I recall being amazed at the condition of
the valves in the first aluminum head I saw- apparently they run
cooler.
-Paul

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Big Shoe - 14 Jan 2007 15:30 GMT

Have never heard of a fixed target. I had a '92 OHV, ran it 185,000
and never touched the engine. My son now has my '99 SOHC, it has
about 140,000 and engine never touched. I can't recall much talk in
this group about valve problems.

>Just curious- anyone know what's the typical mileage before a valve job
>is needed? The original OHV V6 has cast iron heads, the SOHC has
[quoted text clipped - 3 lines]
>cooler.
>-Paul

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Ashton Crusher - 15 Jan 2007 06:50 GMT

>Have never heard of a fixed target. I had a '92 OHV, ran it 185,000
>and never touched the engine. My son now has my '99 SOHC, it has
[quoted text clipped - 8 lines]
>>cooler.
>>-Paul

A guy at work has one with over 400K on the original engine.

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