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new bare heads, new valves, is any machining necessary for install

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Old 05-10-2008, 08:19 AM
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Default new bare heads, new valves, is any machining necessary for install

I guess I missed the boat on patriot's assembled stock 243's for $425, so I have found a good deal on a set of new bare castings. If I was to purchase new vavles, and had the new bare castings, could I assemble them at home with no machining to the valves. I know when you get a set back from the machine shop that have had the valves done, they have the dye where they have been seated properly after the regrind, but if you just buy a set of new assembled ones, it looks to me like they have just been stuck together with new parts. I don't think it would be too cost effective if I bought all the new parts, then had to pay for a valve job on top of that. Any help appreciated, or if anyone knows of another sponsor that has those heads for that price let me know.
Old 05-10-2008, 10:20 AM
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If nothing else, at least lap the valves into their respective seats to make sure that the seats / valves are sealing properly - inspect each seat and valve after lapping to make sure you have an even contact pattern.


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Old 05-11-2008, 07:49 AM
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sounds good,Thanks for the reply. Anyone who has done this chime in!
Old 05-11-2008, 08:47 AM
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If they are the same size as which the 243 castings came with it will work which is what 2"? It would be wise to take it to a machine shop to get the guide clearance checked out also as it could vary with new valves and get it lapped in.
Old 05-11-2008, 10:40 AM
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Check your push rod length to, Should be stock but you never know.




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