higher RPM bottom end and flywheel discussion.

[toki]

Disregarding the capabilities of the head, are the stock rods and flywheel with just forged pictons going to be lite enough to handle 'regular' 7500 rpm operation? When I say regular, I mean when you are driving it hard, redlining it, you are taking it to 7500 rpm. Consider this hypothetical car a daily driver that goes to the track. Meaning it probably won't see 7500 most days of the week, but on occasion at the track it could see high RPM operation up to that point for say 30-40 minute session a couple times a day.

Edit: I should add more information probably --forged pistons, stock rods (re shot peened), stock crank, stock flywheel, 6 puck after market clutch. Stock pulleys up front if that makes a difference. I don't know what, if any, company makes the strongest or stronger rod and main bearings, thats something else I need to find out.

I'm wondering about things such as bearing wear and internal forces. Oil pressure also becomes and issue as well as things like the operation of the power steering/water/oil pump at these higher RPMs than nissan built the car for.

Would the motor most likely be 'suffering' under such condition at the track like a race motor suffers enough to need to be rebuilt after X hours of operation? Or would the motor have a fairly regular life for a 350-400whp turbo motor? I would only expect a motor like this to last 5-7 yrs maybe if nothing else went wrong. Perhaps I'm wrong here.

[:: orion ::]

The issues, as you now...are:

Piston speed (the biggie)Long strokeCrank balance

All these will add up to eventual failure...

And the extra 500rpm that you would gain versus a "regular" setup will be nominal...I say keep it to the safer limit of 7000 and be done.

My .02 - Brian