Anyone know or have an idea of how much power our crankshaft can handle? and how high it can rev safely, along with the power limit?

I've never seen or heard of a 420A cranmkshft breaking, because of massive amounts of power.



Exile Racing Technologies: http://www.exileracing.com
una salus victus
It's holding down the garage floor right now.

I don't think anyone knows the power limit on the crankshaft yet. Its more than 600hp. The bedplate design helps tremendously in that area.

As far as revving - look to the valvetrain for that limit. I've seen some with standalones revving around 8500 - but I'm sure thats with spring and cam upgrades(at least). Me - I wouldn't even try to take the stock springs past the ignition cut - 7800...but thats just me.


95 Eclipse RS : 5 speed
15.7 @ 87.9mph
Jeep TB writeup - http://www.dimensia.com:81/jimbo/JeepTBfor2gnt.html

Originally posted by MetalJim
I don't think anyone knows the power limit on the crankshaft yet. Its more than 600hp. The bedplate design helps tremendously in that area. As far as revving - look to the valvetrain for that limit. I've seen some with standalones revving around 8500 - but I'm sure thats with spring and cam upgrades(at least). Me - I wouldn't even try to take the stock springs past the ignition cut - 7800...but thats just me. 95 Eclipse RS : 5 speed 15.7 @ 87.9mph Jeep TB writeup - http://www.dimensia.com:81/jimbo/JeepTBfor2gnt.html

shit the crank can handle over 750

Um......past what HRC is running as far as I know.

ok. i figured it can handle at least that much. just wondering cause once I get by built block back, my engine will be able to handle just about anything i can throw at it, as long as the crank can handle it. I may go standalone this summer and being able to rev higher would be a plus, especially on a somewhat big turbo (bigger than 20g) my head is fully built, except for cams, but those will get upgraded whenever i figure out which to get

The crank is definately not the weakest link, once someone puts enough power to brake it we'll let you know, like said above ^, Hahn runs 10's w/ no problems, stock crank.

if its annything like the srt-4 crank...we talking 800+ hp (oh yah Shawn Carlson's srt still uses the stock crank from an interview i read of him...i guess thats the last vestige left of the original internals)

but yah 650+ is a safe bet

if memory serves me right phatridz acheived 1400 hp on the tube frame car witha stock crank knife edged. 11:1 with 55# of boost and a 250shot or somehting like that.

Originally posted by MotoFool
if memory serves me right phatridz acheived 1400 hp on the tube frame car witha stock crank knife edged. 11:1 with 55# of boost and a 250shot or somehting like that.

HOLLY POOP ON A STICK BATMAN!!

Originally posted by MotoFool
if memory serves me right phatridz acheived 1400 hp on the tube frame car witha stock crank knife edged. 11:1 with 55# of boost and a 250shot or somehting like that.

Shit I'd love to see that

so once i get a standalone and can get pst the rev limiters I could rev up to 8500 safely and make over 500 hp then? my block and head fully built so the head can take it