Topic: Hyundai going big with their new 3.3L 365-hp, twin-turbo V6 powerplant

[Autos_Editor]

Hyundai's new 365-hp 3.3L twin-turbo V6 pumps out 379 lb-ft at a ridiculous 1,500RPM!

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[rrocket]

A few things:

-A "monster torque curve" doesn't last a mere 3,000 RPM as posted in the article.  That would be a weak sauce torque curve.

-Also, that dyno run is bogus/doctored/wrong.  Having spent numerous hours in a dyno room, I know that TQ and HP crossover occurs at 5252 RPM.  The graph clearly shows this occurring 1000RPM sooner  (EDIT I zoomed in.  It's closer to 4700RPM).  Which is impossible.  Which means this dyno plot is either fake or the RPM pickup was wrong.

[bridgecity]

Looks like 5252 to me.  I think the graph starts at 1000rpm based on that peak torque is around 1500.

[rrocket]

Looks like 5252 to me. 

It's definitely not.  Closer to 4700.

[bridgecity]

Looks like 5252 to me. 

It's definitely not.  Closer to 4700.

If what I thought was the 5000 line is actually 4000, then it's more like 4200.

[rrocket]

Looks like 5252 to me. 

It's definitely not.  Closer to 4700.

If what I thought was the 5000 line is actually 4000, then it's more like 4200.

It's 4700 (or so).

Here's an enlarged pic

[mmret]

Looks like 5252 to me. 

It's definitely not.  Closer to 4700.

If what I thought was the 5000 line is actually 4000, then it's more like 4200.

It's 4700 (or so).

Here's an enlarged pic

Torque and HP are on separate y axes.

Its fine. Looks like 5250 ish with aroun 355-360 340-345 of each

[bridgecity]

You have to shift the curves though, because the y axis aren't the same as mmret stated. 

Your picture is much clearer than the one I was looking at.  What a confusing chart.  Sir O would be very disappointed.

[rrocket]

 What a confusing chart.  Sir O would be very disappointed.

HAHAHAHA!!!  Yea, for sure.

[Sir Osis of Liver]

True though, that chart could have been done better.

[EV Dan]

The TQ curve is wishful thinking. It can't be that perfect. If the car only exists as a prototype, what exactly did those tuners put on the dyno?

My feeling is the next Gen Coupe will be offered as a turbo I4 and a turbo V6. As for the Sedan, CAFE will make the V8 disappear in favour of the same boosted V6, which I'm sure can be tuned to outperform it.

[Noto]

nobody else commenting on the nice look of the Aston Martin Genesis Coupe?

[rrocket]

nobody else commenting on the nice look of the Aston Martin Genesis Coupe?

No point in commenting on vaporware sketches.   

[revalations]

Hyundai has a habit to over estimate their HP numbers. And fuel economy too. 

Car will be slower than anything in it's class....all while having WAY more HP/TQ

[bensonc]

Always hear ppl said flat torque curve, But this is the ultimate flat I ever saw....   

Lots of thing can alter reading... in real life, a 15min fan cool down already good for 10 wheel horse power, let alone the grade of gas and test temp.  Plus, who going to depend on Hyundai hp claim...

[SaskSpecV]

Always hear ppl said flat torque curve, But this is the ultimate flat I ever saw....   

No kidding.  Looks like someone plotted a bunch of points on an Excel file, made the dyno graph from that - then went back to the spreadsheet and changed the numbers to make the graph look "perfect"!  A real dyno run usually has all sorts of "noise", never a perfectly straight line like this.  And Rrocket is right, that dyno can't be legit with the HP/TQ crossing at ~ 4700 rpm.  It doesn't matter that HP and TQ have their own y-axes, the indepedent variable (engine speed) is the same for both dependent variables (HP and TQ), and thus they are on the same x-axis.

But as revelations has pointed out, Hyundai hasn't exactly been known for truthful reporting in the past (and I'll suggest Hyundai overstates their interior  space specs too, as well as HP and mileage.  And this coming from a Hyundai owner who loves his vehicle!)

[tazcubed]

Looks like 5252 to me. 

It's definitely not.  Closer to 4700.

If what I thought was the 5000 line is actually 4000, then it's more like 4200.

It's 4700 (or so).

Here's an enlarged pic

Yup. The crossover is closer to 4700 - regardless of the Y axes. Unless, of course, if someone is trying to say that they're on different x axes - which is not the case. 

[greengs]

Always hear ppl said flat torque curve, But this is the ultimate flat I ever saw....   

No kidding.  Looks like someone plotted a bunch of points on an Excel file, made the dyno graph from that - then went back to the spreadsheet and changed the numbers to make the graph look "perfect"!  A real dyno run usually has all sorts of "noise", never a perfectly straight line like this.  And Rrocket is right, that dyno can't be legit with the HP/TQ crossing at ~ 4700 rpm.  It doesn't matter that HP and TQ have their own y-axes, the indepedent variable (engine speed) is the same for both dependent variables (HP and TQ), and thus they are on the same x-axis.

But as revelations has pointed out, Hyundai hasn't exactly been known for truthful reporting in the past (and I'll suggest Hyundai overstates their interior  space specs too, as well as HP and mileage.  And this coming from a Hyundai owner who loves his vehicle!)

Ive seen other companies to this.  Make the lines flat to illustrate virtually flat tq curves.  For all intents and purposes tq varying -+20lb-ft when it's over 300 isn't a big deal.

[bridgecity]

It doesn't matter that HP and TQ have their own y-axes, the indepedent variable (engine speed) is the same for both dependent variables (HP and TQ), and thus they are on the same x-axis.

Am I losing my mind? Could be.      The graph shows them crossing at about 4700,  the torque and hp numbers aren't close to equal where they cross.  However if you look at approximately 5252, torque is about 350, hp is about 350.

[SaskSpecV]

It doesn't matter that HP and TQ have their own y-axes, the indepedent variable (engine speed) is the same for both dependent variables (HP and TQ), and thus they are on the same x-axis.

Am I losing my mind? Could be.      The graph shows them crossing at about 4700,  the torque and hp numbers aren't close to equal where they cross.  However if you look at approximately 5252, torque is about 350, hp is about 350.

Nah, you're still quite sane BC - I think!  You are right, they HP and TQ are pretty close at 5252 rpm taking into account the different y-axis.  It looks like the TQ might be a bit higher - maybe 360, vs 350 HP, but it's probably "smoothed" numbers anyway, so maybe they are identical.  Dyno could be based on a legit reading....but colour me skeptical until it comes from a 3rd party.