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Old 11-21-2013, 07:09 PM   #3
fasterthanu
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Quote:
Originally Posted by nelsmar View Post
the OEM bearings are a severe problem at 300+ WHP.

This topic can get a tad confusing because you see a number of people running 300+ 400+ 500+ on their cars without any issue from the factory. The reality is that we don't know how much these individuals actually drive at these horsepower levels. So how much of a problem is there with this?
What you also do not know and cannot factor is:

improperly set clearances
bad line bore
installation error
driving habits
preventative maint

I could probably list another half dozen

I work on industrial machinery which utilize different types of lead,bronze babbit etc. If the lubrication is adequate, tolerances are maintained
and temperature is within range,a factory bearing will hold up no problem.

I have seen instances of bearings destroying crankshafts in industrial applications because the material was too hard.i would rather replace bearings than crankshafts
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