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Reverse Rotation Crank- Difference?

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Old 07-13-2005, 02:18 PM
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Default Reverse Rotation Crank- Difference?

Does anyone know the differences between a standard rotation crank and a reverse rotation crank?

I'm building up 2 350's stroked to 408's and need some info.

Thanks all!
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Old 07-16-2005, 02:03 PM
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Rob
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Default Re: Reverse Rotation Crank- Difference?

I belive the crank is the same ?The differance is in the cam shaft with firing order.


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Old 07-16-2005, 02:33 PM
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Default Re: Reverse Rotation Crank- Difference?

Hmm... not sure about that,
The crankshaft is either
crossed drilled or the oil holes are drilled so that when the
cylinder fires the oil hole in crank is facing up torwards
the cylinder. Thereticaly Providing a Actual film of oil the
downward force of the rod bearing will ride on.

My Counter Crank was crossed drilled . It is a
Sonny Bryant Billet which is knife edged on the wrong
side telling me it started life in a normal application.

Dont really think it makes a big difference.
Providing there is enough oil pressure and proper clearence.
Next time I have a bottom end apart ill take note on where
the oil feed is for the rod bearings.
(Hopefull not mine)
Here is a recent Thread on it

Hope this helps
Gerry

http://www.offshoreonly.com/forums/s...unter+rotation
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