Turning crank journal down for 2.10 rods

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cpearce

cpearce

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Hello all,

I have a Mopar performance 3.79" forged 1053 crankshaft. I have just made a deal on a set of 6.125 Oliver billet rods. Will turning the 1053 crank down to the 2.1 rod journal have much af a negative effect on its strength? Will the crank need to be nitrided, or re surface hardened after it has been turned? The rods have a .940 big end width, so I am assuming the crank journals will also need to be widened to accomodate the new bearings, am I correct? For a hot street strip application will the 1053 crank still be sufficient for a 550-600 hp engine after it is turned .0250? The engine is naturally aspirated. Would I be better of buying a K1 4340 crank ready to go with chevy journals? Can anyone direct me to a good crank shop in Alberta Canada?

Chris
 
Does anybody have any experience with the Mopar Performance 1053 forged cranks? Surely somebody here has had to turn one in the past and may have experience to share.
 
In terms of cost effectiveness - It will need the grinding and finishing. Given the amount plus adding a new radius and widening that's not a typical $300 turn and polish. After that IMO it should be re-nitrided. I'm not sure on that cost. But i'd get some prices and see. A new crank might be less once you consider everything vs selling what you have without modifying it.
 
Thanks for th input gentleman. I had those concerns about the cost to turn mine and re nitride vs. just buying one already made with the 2.1 journals.
 
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