How safe are we running H&S on hot?

[DirtBikePilot]

I've seen at least one thread where the rods got bent with a tuner only. I run mine on hot most of the time, but I get worried about the rods in my engine. I'd really rather not bend or break any. I'm looking for anyone with input, especially from H&S directly. An actual statistic about major engine damage would be nice if they have one. Thanks!
Chris

[svtbolt2001]

interested also.

[H&S Support]

We have not heard of any major engine failure on the 6.7L platform. The only known issue that now seems to have been resolved by Ford was a turbo shaft failure due to excessive vibration. Other than that, the 6.7L has been a solid engine platform. Now if somebody will step up and build a better CP4 pump or twin pump kit we will start testing the limits!

[mrplowjr73]

I was wondering if you shared the sentiment that rods will be a limiting factor. We've seen a couple failures, and a couple pictures, but I was curious as to your take on the situation.

My thoughts are that its a little early to tell given the realitively limited number of failures, and limited number of trucks in that HP range. Seems like not many are talking about it. I mean when we had these kinds of failures in the 7.3s alot of testing went in before anyone threw in the towel.

Is anyone considering CP testing, or an indepth analysis of a stock rod under controlled circumstances, maybe stress testing of a rod outside of the engine? Now this isn't something I would expect H&S to do necessarily, but was more curious as to if any individual or shop out there is doing this type of an analysis.

Maybe it would be more obvious to me if I held a piston/rod assembly from a 6.4 in one hand and one from a 6.7 in the other. I'm just not totally totally convinced yet.

[DirtBikePilot]

Thanks for the replies, especially from H&S!! I really appreciate it. The rod failure I'm thinking of was on a spartan tuned engine. It's right here: engine knock - PowerStrokeNation : Ford Powerstroke Diesel Forum

I feel like running the hot tune is right at the limits of the stock internal parts. Hopefully I'm wrong.

[2003kingranch]

SPE grenaded a 6.7 already with a h&S and their twin kit.