I often did a mild cleanup on race engines, not much more than cleaning up casting flash. You want to be very carefull about changing the shape of valve bowls and ports. I learned that unless you know what your doing, you tend to make big shiny holes that flow no more and sometimes less than stock. A flow bench and knowing how to use it are required for porting work that actually improves things. On some engines, removing the mismatch between manifold and head removes a reversion dam that helps charge cylinders at lower rpm.
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Today's Featured Article - Talk of the Town: Trailerin a Tractor, Chains or Straps? - by Staff. Another great discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: " I bought a trailer and plan to take my CASE VAS to some shows. I don't yet have anything to secure it to the trailer. So which is better to buy and use; the ratchet-type straps or binders and binder chains?
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