Quote:
Originally Posted by zraffz
You really think so? I was honestly expecting to be around 460-480 crank. Obviously wouldn't complain if I made more though 
Anybody know anything about the company Ohio Crank? They have the crank I need for $495. Maybe a stupid rookie question but what determines if a crank is going to be internally or externally balanced before the balancing process occurs? (I ask because ohio crank doesn't specify and I would prefer an internal/neutral setup like I am familiar with).
You guys make a valid point. I'd rather do it right the first time and be able to trust what I built.
Edit:
And how are these rods? They are balanced, clearanced and weight matched.
http://www.summitracing.com/parts/sc...1qls/overview/ |
I believe Adam was looking at Ohio cranks before settling on a compstar piece.
Internal vs external is gonna be a big debate and it comes down to how much money you wanna spend. I assume that a crank will come close to balanced if they claim its neutral but again, it pays to have a shop check it out.
Internal will have the crank drilled to accept heavy metal slugs and the shortblock will be "modular" in the sense that the flexplate is not paired to it. However, depending on how off the crank is balance wise, it can be fairly expensive at ~$70 or so a pop of heavy metal.
External takes the balance weight and throws it on the flexplate or flywheel instead on internally. Cheaper, and simple, BUT it means you are stuck with the flexplate to that engine. So switch to a larger/smaller torque converter or trash the flexplate and you may be up ****s creek until you can make another flexplate with the exact weight used previously.
I believe in terms of engine performance, a fancy internal balance is recommended as it does not allow the crank to oscillate as bad on the mains at high RPM. I am not 100% on that, and is something you gotta discuss with your machine shop. I chose to be cheap and just keep my longblock externally balanced, machine shop said for most street type builds you won't be able to tell the difference.
Edit: Feel stupid now, didn't read your question, misinterpreted thought you asked internal vs external, and don't feel like deleting
