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brian777

  • Karma: +3/-0
Gm nodular iron crank
« on: November 29, 2015, 03:57:17 PM »
What are your thoughts on this crank also what is a safe hp to run with it? Thanks in advance


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jyeager

  • Karma: +62/-0
Re: Gm nodular iron crank
« Reply #1 on: November 29, 2015, 06:10:50 PM »
Flusher or Bostick to the SCJB Phine Please


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GT Jets

  • Karma: +192/-0
Re: Gm nodular iron crank
« Reply #2 on: November 29, 2015, 06:26:40 PM »
RPM is a cast cranks arch nemesis.

About 550 horsepower and 5,200 rpm is my line in the sand.

Heard of much more, but I think luck plays a big part.

GT
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

Six-Oh-Nine

  • Karma: +28/-0
Gm nodular iron crank
« Reply #3 on: November 29, 2015, 06:35:34 PM »
I'd say 550-600 hp is about the limit... BUT... 6000 rpm is also about all I'd spin one up to... And not 6000 and keep it there... Like "oops... I went 6000"... I've gone harder on them... But then I've also had them let go at less... Harmonics are the devil on cast cranks.


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The Bostick

Some people play hard to get, I play hard to want.

 


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