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pup motor specs.

pup motor specs.

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firekat
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Hello
I haven't gotten my books. So I need some specs on 8R,2U,3T pup motor.

Standard Bore
" " Crankshaft Mains/Rods

what can the Mains/Rods get turned down too also.

Any other specs would be useful.

thanks
firecat
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Wed, Apr 2, 2008 12:28 PM
SJ
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Bore is 3.628"-3.629" X 4" stroke and crank is mains 2.125" and conn. rods are 1.999" and valves are set .008" hot so add about .002" more for cold setting. I don,t have a parts book on the undersize bearings and can,t remember what is available but .020" under sounds about right. There may even be .030" under available but not sure without a book. If you need any other spec. I have a factory sheet here on it and other older Cat engines starting and diesel.
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Wed, Apr 2, 2008 6:36 PM
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