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Original Message
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RE: hardened seats? |
By gerry - 08/02/2001 3:53:47 PM; IP 208.217.67.246 |
You're rendering the previous advice on hardned seats in abstract, Eric.
The advice has always been conditional. If you are using unleaded fuel (pump or racing) the engine is in the car and the heads are on the engine and don't need a valve job, you really have little to gain by pulling the heads off just to have hardned seats installed. You will only see the effects of using unleaded fuel on soft seats over a very long time period -over 40k to 50k miles, or over a much shorter period if the engine is used in hard service (such as racing, or trailer hauling, or a boat). it's an rpm and heat relativity.
The best advice regarding the seats is to have it done when the heads are off the engine for a valve job or other service. |
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