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Buick 233 CI Engine Hardened Valve Seats


Guest Ernie North
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Guest Ernie North

The title of my post earlier today incorrectly indentified the engine displacement as 235 CI It is a 233 CI engine.

I am looking for outside diameter and depth specifications for hardened seat valves. Any help will be appreciated

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Hi Ernie. From my understanding, these engines are relatively low compression, and combined with the metallurgy of Buick engines, hardened seats aren't necessarily required. A good grind may be all you need as part of a rebuild.

I am am not an expert though. I expect someone else will chime in. You may want to consult a local engine builder as an option.

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