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Author Topic: valve seats in a 103 engine  (Read 1740 times)

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RK2000

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valve seats in a 103 engine
« on: July 02, 2009, 05:18:45 PM »
What is the difference between the 18048-98 seats and the 18048-98a seats? Will they interchange?
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HD Street Performance

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Re: valve seats in a 103 engine
« Reply #1 on: July 02, 2009, 08:24:22 PM »
Generally a letter on the end of the number indicates a revision, likely material.
Consider using an OS seat as the original bore and a standard seat will likely not have enough press.
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