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Forum namePerformance/Engine
Topic subjectKnife Edging the Crank
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=46051
46051, Knife Edging the Crank
Posted by rhui, Mar-05-03 08:03 PM
Hey,
I'm about to rebuild my engine and wondering if it is a good idea to "knife edge" the stock crank? If not, what stronger cranks solutions are there and how much and where to get?

Thnx,
Ritchie
46060, RE: Knife Edging the Crank
Posted by 992gnt, Mar-06-03 02:41 AM
Our cranks are knife edged from the factory. Unless you plan on putting down more than ~450-500 crank hp, the stock crank will be fine.

46063, RE: Knife Edging the Crank
Posted by VX100, Mar-06-03 04:04 AM
Our stock crank shafts are very strong, and knife-edged to some degree from the factory. I would save the money for other modifications (pistons/connecting rods, cams, ect...)

No one has ever had problems with the crankshaft breaking. Not bad for a nodular iron crank.
46140, RE: Knife Edging the Crank
Posted by Breezio, Mar-06-03 03:01 PM
so what exactly is 'knife edgeing' anyway? i never heard anyone actually describe what it does or changes.
46148, RE: Knife Edging the Crank
Posted by bullox, Mar-06-03 04:13 PM
knife-edging the crank not only lightens the crank itself, it also creates less friction going through the oil as it has less surface area. maybe friction isn't the right word. it basically moves through the oil easier

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Black 96 ESI 5 speed
few mods here and there