Dyno result. Can someone interpret this picture please

Your engine is putting 356 horses to the dyno after the costs imposed on the engine at that speed and rpm state. It appears to be your max horse rating. 1650 on your Horsepower/Torque chart. If your engine is rated for say 550, and you are putting 356 to the ground at that speed, I guess it's pretty good. But there is a loss so you either have a enormous drive train like a tri axle drive set or something

The amount of torque 2400 to me is a number that probably indicates you are testing a fire truck or wrecker or some such with big time tuning to allow such monsterous power as that. I will understand how much torque your engine is able to do when it's lugged down to around 1250-1300 or so and you will see it's maximum torque effort.

The coolant temperature tells me that you have not had the engine running very long. It's not that warm and probably not at it's best operating temperature.

That's pretty much it. There is nothing further I can mine from that single paper. She's cold and needs to warm up before she can really get to work on that thing.

Finally but not least It does not say what the transmission gear its in etc. It will be easier to understand what it takes for that thing to be doing what's its doing.

 

I don't know a #### thing about turbos except two things. It must never be rev'ed until you have the engine oil getting warm and the engine at or near operating temperature. And the other is that the exhaust pyro meter must not get too high on a pull, that exhaust is what the turbo has to eat. You can literally burn it out.

Im not afraid to confess I know nothing about boost numbers. It could be Coptic for all I see.

Maybe a little light reading on turbos and boost for big trucks and what is expected might resolve that deficiency.

 

I don't know what that number is either, maybe if you are still there, ask what software they use and maybe one of us can research it.

Did they give you a printout?

By the way the truck is producing 75% of the rated power with good blowby. I would be a little concern with the 75% at the mileage you have on it.

 

He stated it was a 475 horse engine. With parasitic losses imposed by the dyno, drive train, transmission, engine hotel support (Alternator, compressor etc etc etc) it's putting 356 to the dyno. That's not bad at all. I am concerned about the torque rating. I don't know how stout it is until the dyno pulls it down to 1300 and lugs it, then we find out how well it does.

 

256 kPa equals 37 PSI of boost

 

256kpa is 37 psi of boost. I'm not sure how these are calculated, but on cars you normally subtract it from Atmosphere pressure (14.6) which puts it around 23-24 psi.

 

Most cars Ive seen 15 pounds of boost is epic. Anything over would be icing on the cake if the engine can take it.

Im not a turbo man, but I understand the work they do and are valued for it. You think you want super chargers too on top of those engines. So that the turbo works down low and the charger works when you get up high.

 

Of course.
Well, my car is boosting 26 PSI right now