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Old 01-10-2014, 12:51 PM
Ant Ant is offline
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Default Aluminium Block hot bearing clearances.

Dart aluminium engine has 0.00275" main bearing clearances cold (2.75thou)
I am interested to know if the main bearing clearances increase HOT possibly 0.001" more or less??

Going by some oil companies oil viscosity recommendation of over 0.003" main bearing clearances use a 50wt oil and under 0.003" use a 40wt, that may put me in the 50wt oil category.
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