Originally Posted by
houston
try not to run your low speed so rich , that is THE reason front bearings fail prematurely
So you actually think extra fuel leaking out the bearing actually harms it ? I dont buy that for a second dude ! LOL what harms the bearings is when the engine breathes thru the front sucking up dirt into the bearing...thats actually what kills the bearings....dirt kills bearings !!!!! . I would rather have a engine leak a little fuel then suck a little dirt ! a little extra fuel only lubricates the bearings, it doesn't harm them...dirt is what kills the bearings...not fuel ! this why we block the little oil bypass port....we get extra fuel leaking out the front, but have zero issue with dirt getting sucked into the engine......... After blocking that port all the engines show slight leaking out the front, yet the amount of front bearings failures was reduced to nil....and this is tested and proven over hundreds of engines now...............As I say, its better to leak a tiny bit of fuel then it is for the engine to breath thru the front...Breathing in dirt thru the front bearing is what kills the bearings....fuel seeping out does no harm at all.......fuel is a lubricant, and having extra lubricant only seals and protects the bearing better.... Personally I would rather see a slightly damp front bearing then a bone dry bearing...if the bearing is bone dry then I always suspect the engine is breathing in thru the nose....which means it is breathing in unfiltered , dirty air..........
Now of course a little extra fuel leaking will cause a collection of dirt on the nose of the engine, that may eventually wear out the dust shields....But this is far less of an issue then the engine breathing in unfiltered air thru the bearing....... As under some conditions these engines will actively breath thru the nose and will suck up large amounts of dirt, which absolutely destroys the front bearing in a very short amount of time...........this is far more of a concern then a slight bit of fuel seeping out the front bearing.,....