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K series cranks=weak?

3363 Views 25 Replies 17 Participants Last post by  vteczone
A friend of mine was at the nopi race in dallas with his all motor car and noticed Norris(K powered insight) broke often.He mentioned that it was crank realted and that the crank was twisting with that much rpm.Im not sure as too how much truth is in this,as I have been working with K motors since 2002 and they seem to be much stouter in every area than the B engines.But also mentioned to me about about the crank skunk was running and that they rarely ever break.
Question is,are the K series crank weak when it comes to high rpm?Ive never taken one that high with as much power as Norris put's out.
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sf-si-02 said:
There is a turbo a3 that had crank walk on ephatch...
I think I vaguely remember that thread. However, I don't think that guy ever checked his main bearing journals to see if there was actually crank walk or if his bearings toasted for other reasons. Making such diagnosis without proper inspection of the block carries little weight IMO.
Just out of curiosity.. What hp levels is the insight pushing?

- Dan
BG Enjoi said:
Just out of curiosity.. What hp levels is the insight pushing?

- Dan

If you're talking about Norris's insight, then I'm sure it's pushing in the low-mid 300 range. Most all-motor vehicles are pushing around that hp level to hit those 10's and 9's.
You have to remember that these max. effort cranks are cut down to extremes.
i think just put s2000 crank in a k24 and call it a day and rev like crazy!!!
well.. where i am,some racers like to spread rumors of something which is the opposite from the truth,esp when the truth is something that will put them at the advantage.. :)
im not sure about this thread but who knows..
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