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> High rpm type 4
r_towle
post Sep 9 2013, 08:34 PM
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What is a street able motor (valve train) set of materials that could sustain 7k rpms ?

So, what valve material, spring materials, push rods, lifters etc.

No ceramic lifters unless they are out on the market again.

Rich
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DBCooper
post Sep 10 2013, 09:06 AM
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Square actually makes it harder to get high revs. Jake was describing an oversquare engine, bore a lot larger than stroke, so lots easier to buzz. The square ratio makes for a more balanced motor.

That's a beautiful engine, by the way. Look at the size (and number) of main bearings, the little tiny coated piston skirts, those beefy rods, long rod bolts, big thin and smooth counterweights. That's nice.


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