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Thread: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)

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  1. 05-12-2011, 01:56 PM #1
    Reeves
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    Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)

    Cam Bolt/Intermediate Shaft Weights

    Cam/Intermediate Shaft Bolt and Washer = 77.65g

    The bolt is M12 x 1.5 x 50mm
    ¼” Thick Washer – Beveled (Bellville?)
    Washer O.D. 1.220” (about 30mm)

    New Never Used Intermediate Shaft w/Key and Fuel Pump Lobe = 1175.45g/41.46oz/2.59lb

    New Never Used Intermediate Shaft w/Key and center machined down to 0.775” =
    1017.61g/35.89oz/2.24lb

    Difference of:
    157.84g/5.57oz/0.35lb after machining.

    From the Hot Rod 2.2 Complete Review catalog, it says Koffel’s shaft with key weighs 2.5lbs before machining (which is what I got as well) and 1.5lbs after machining. It HAS to be gun drilled to save that much weight?

    Used Intermediate Shaft without key but with Fuel Pump Lobe = 1173.45g

    From the above, the key should weigh = 2.00g
    Attached Thumbnails Attached Thumbnails Click image for larger version.  Name: Aux%20shaft%20info.jpg  Views: 148  Size: 118.5 KB  ID: 30884  

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