Lucky Find :)
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Lead Driver
Joined: Aug 2002
Posts: 6,682
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From: Saskatoon SK Canada
I don't know what to think about hardened seats. The seats on my heads look almost brand new (I checked the valve face to the seat and it's still in the right position). We've done some 74 and 80 SBC heads in class and they just needed some touching up on the stock cast iron seats. I'm doing a Honda Civic head right now (have to manually lap the valves since they are so small 
) and it doesn't have hardened seats. My Dad's 65 M-350 has seen a hard 70 000 miles carrying 5000 lbs of water and 6500 lbs of grain over the years. It still runs stong with only some minor valvetrain noise but it burns oil. That won't affect the seats though.
) and it doesn't have hardened seats. My Dad's 65 M-350 has seen a hard 70 000 miles carrying 5000 lbs of water and 6500 lbs of grain over the years. It still runs stong with only some minor valvetrain noise but it burns oil. That won't affect the seats though.
Thread Starter
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Lead Driver
Joined: Aug 2002
Posts: 6,682
Likes: 12
From: Saskatoon SK Canada
I wouldn't be doing a Civic head if I didn't have too! Another group misaligned the overhead cam bearing caps and torqued it down which off course broke it. So now I'm stuck to redo the "replacement" head. Trust me I'd rather be working on my heads or even... must I say it... a chevy 350! 
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