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Author Topic:   building a motor loose
posted April 09, 2004 03:11 PM
i'm still new in the engine building and i heard someone say something about building a motor loose. can someone tell me about this?

posted April 11, 2004 10:20 AM
That is just what people say when it comes to oil clearances for the rod and main bearings.

The more clearance for oil, the more loose it is.

For example:

If the factory tolerances for connecting rod oil clearance is .0015" to .00035", you would select a bearing that would give you .0035".

Same goes for the main bearings.

A loose engine is better for racing.

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