Over the last few months we have seen a fair share of damaged engines come and go across the forums.

This rod was bent on a "large" K16 hybrid based engine package> Stage 3

You can see in the pictures that the rod is bent up and twisted.






Please NOTE: This engine was ran on RACE gas.. I expressed my concerns with the rods. The reply back to me was that "many" people on the forums are running RACE gas with no problems. We will see more and more of these events happen. You have two camps, those that want to push the envelope at all cost vs those that try to take a conservative safe approach.

This particular engine also lost the crankshaft due to the side load wearing the journal radius.

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Ultimate Motorwerks

kevin@ultimatemotorwerks.com

360.805-9066

Holy crap!!! I think you need to detune my car!!!

Holy CRAP!!!

Mike

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http://i145.photobucket.com/albums/r...heelsup24k.jpg
"I will not be a spectator in the sport of life!"
mjk 1994

What is wrong with running race gas? I don't see how running race gas with a 93 octane file is jeopardizing safety?!! Please explain.

Kevin, please shoot me your address so I can overnight you my loader.

alcorndog(@)gmail(DOT)com

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2002 996TT Seal Gray/ Gray
UMW Flash, UMW LWFW Kit, Tubi

100 octane on the Stage 3 kit did the damage. It was the race gas and tracking that did the damage. The car had injectors and full intake kit.

Running race gas on a smaller kit or stock turbochargers won't bend the rods.. It's after 600 to 650 WHP that does the damage with fast spooling turbochargers.

__________________
Ultimate Motorwerks

kevin@ultimatemotorwerks.com

360.805-9066

So I gather that its probably prudent to consider the Arrows Rods with any significant upgrade ?

Why not just tune the stage 3 programming to work within the restrictions of stock rods? Reduce low end torque, Raise high end HP?

the pressure on rods isn't lessened at high RPM. Torque is exactly linear with
the stress on the rods, at whatever RPM, though obviously the higher the RPM,
the higher the inertial loads we add to the rods. If there is a limit to what a
rod can bear, it would have to limit the amount of torque at any RPM, and
to limit torque *more* at high RPM.