H&S 6.7 Breaking Point

HD F250 · Feb 28, 2013

WOW....I guess the motor is better than most of us thought with the right tuning and turbos. I may see a 6.7 in my future for a DD/tow pig!

H&S, thanks for the test, very cool. Pumped for round 2!!!!

3brorce · Feb 28, 2013

ya dang it looks like my 782 was off

01PSD · Feb 28, 2013

Just one thing I'd like to add..
One truck doing this on this one day is NOT evidence of a solid reliable engine at these levels..
But it is awesome

young7.3 · Feb 28, 2013

01PSD said:
Just one thing I'd like to add..
One truck doing this on this one day is NOT evidence of a solid reliable engine at these levels..
But it is awesome

This...

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3brorce · Feb 28, 2013

ya they have been beating the piss out of that truck for sometime

Smokyred · Feb 28, 2013

01PSD said:
Just one thing I'd like to add..
One truck doing this on this one day is NOT evidence of a solid reliable engine at these levels..
But it is awesome

Very true, but it does show these engines can take some power and hold together!

Dave

Lang · Feb 28, 2013

Did nobody notice that something blew up from the motor? Maybe a boot? Looked like compressed air maybe nitro?

powerstrokin15 · Feb 28, 2013

Lang said:
Did nobody notice that something blew up from the motor? Maybe a boot? Looked like compressed air maybe nitro?

wastegate.

SEABEE08FX4 · Feb 28, 2013

I think that was the waste gate opening up.

mysticblu999 · Feb 28, 2013

Boot

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H&S Bentley · Feb 28, 2013

Thanks guys, this was FUN. We learned a lot, and next time will be WAY better. The trans slipped a little on the last 884HP run, but I assume it will be just fine at my fuel only numbers. I'll drive it home tonight and let you know.

You can watch the graph and see as soon as torque peaks, trans lets loose for a second. Hard to say whether it was converter slip or another clutch, but it definitely didn't like 1670 lb/ft of torque.

While this does NOT prove that this engine is capable of living at these levels, I am still impressed with the performance. :thumbup:

FaSSt9602 · Feb 28, 2013

01PSD said:
Just one thing I'd like to add..
One truck doing this on this one day is NOT evidence of a solid reliable engine at these levels..
But it is awesome

Virtually no engine is truly reliable at those levels...you are tempting fate at anything over stock really, but I have thought all along that it was only going to take some time with tuning before the fears of 550hp tops on a stock bottom end were put to rest.

I do think that whatever single turbo they have on there helped the cause. The stock turbo works AWESOME for what it was designed to do, but when turned up I think it is too much, too low in the RPM's...stock turbo trucks make peak torque REALLY low, this one was somewhere around 2500rpms.

01platinum · Feb 28, 2013

That was great to watch. Ready to see what comes in the following weeks. That engine really impressed me today with the runs.

blk350on20s · Feb 28, 2013

In for the tranny news. Im hoping its fine and just slipped a little.

Powerstroke586 · Feb 28, 2013

It was only a slip the trans is fine

Powerstroke586 · Feb 28, 2013

SEABEE08FX4 said:
I think that was the waste gate opening up.

Pretty sure they said its non waste gated

young7.3 · Feb 28, 2013

Powerstroke586 said:
Pretty sure they said its non waste gated

During the live feed he said they were hooking up the waste gate because the bp was getting too high.

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3brorce · Feb 28, 2013

yup yup ^^^. Guarantee in two weeks when they put nitro back to her on the dyno for bigger numbers, the trans aint gonna hold it especially since she is already hurt some.