The old school thinking was: If it was not knocking before the new bearings, it certainly will not knock after new bearings. or This engine made it xxxhours/miles without knocking by replacing the bearings I should get another xxxhours/miles. Both have a grain of truth but every engine is different so results will vary. As already mentioned, when you pull a cap, either main or rod, inspect both surfaces. If there are noticeable grooves on the journal and the old bearings are worn a couple layers down, get the crank turned or polished. If you remove the crank, measure for out of round journals. If nothing obvious appears wrong roll in new bearings. In all other cases new bearings are a band aid at best.
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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