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Old 01-03-2019, 05:18 PM   #1
Cjones5050
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Crankshaft For Turbo RSX Type S

Hey guys quick question,

It might be a dumb one, but I was wondering if it would be beneficial for long term performance if I were to upgrade my stock K20A2 crankshaft with 200,000 miles on it, for a steel 4340 stronger crankshaft. Like the title says, for turbo of course. Possibly around 450-500 HP to the wheels. Now I've read plenty of threads stating the stock crank is good for 500+ HP. But I'm looking for longevity here with a total built K20A2 from top to bottom.

In short, keep the stock crank with 200,000 miles on it, brand new OEM crank, or a JEGS steel 4340 crank? It will be balanced with the new piston/rod combo regardless.

Thanks for any info.
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Old 01-04-2019, 07:23 AM   #2
dustyboner
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the stock crank is fine unless it has some kind of damage or is out of spec. you could probably just have it checked and micro polished.

https://www.k20a.org/forum/showthread.php?t=192226

http://winbergcrankshafts.com/index....-micro-polish/

https://www.calicocoatings.com/coati...shing-process/
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Old 02-12-2019, 06:42 PM   #3
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Originally Posted by dustyboner View Post
the stock crank is fine unless it has some kind of damage or is out of spec. you could probably just have it checked and micro polished.

https://www.k20a.org/forum/showthread.php?t=192226

http://winbergcrankshafts.com/index....-micro-polish/

https://www.calicocoatings.com/coati...shing-process/
Holy shit I just seen this! Thank you so much!!!!
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