COMP Cams Valve Guide Cutter For .494 O

Marsoni

M251S

$89.95

Get it in 3 business days with 1 day shipping. Friday, May 29

COMP Cams Valve Guide Cutter For .494 OMost high performance engines today require the use of larger than stock diameter valve springs. This . 494" Valve Guide Cutter from COMP Cams will allow the engine builder to machine the cylinder head to the proper size for your spring. Each cutter requires the use of an arbor pilot, which are available in three different sizes

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A very good treatment of the subject matter, especially valuable as it mines the Japanese sources, which have largely been ignored by the Western historians. The narrative is clear and easy to follow & background detail gives important context into the psychological aspects of the events. Definitely recommended!

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Reviewed in the United States on December 14, 2025