Not only are they scaled differently, but you can see the value of torque.

Torque has two purposes.

1. fun
2. used to calculate horsepower since no one on the planet has ever directly measured horsepower on a automobile engine.


Quiz:

Q1. Where does the constant 5252 derive from? Please raise your hand if you know the answer.

Q2. Does boost effect the formula HP = torque x RPM/5252?

A virtual beer to the winner. You must be a virtual 21 to enter.


Speedlimit....

 

Sorry, I'm coming into this thread a little late and I don't have time to read all the replies. Have we determind that this Evo VIII that is puting out 240 hp & 253 foot pounds of torque at the wheels is for sure not a JDM model?

 

radians: a unit of plane angular measurement that is equal to the angle at the center of a circle subtended by an arc equal in length to the radius
The circumference of a circle is equal to 2 * pi * radius, which leads to the relationship that 360 degrees is equal to "2 pi radians."
(ft * lb * 2 * pi * radians) / (minute * hp)

below 5252 rpm any engine's torque number will always be higher than its horsepower number, and above 5252 rpm any engine's horsepower number will always be higher than its torque number. At 5252 rpm the horsepower and torque numbers will be exactly the same.

 

Hi Kinmar!





Speedlimit....

 

Hello and thx

 

Guys, I noticed a few people posted the R&T 1/4 time of 13.8 as if that figure was the one to related to in terms of hp in this thread.

However, as has been discussed in other threads, the 1/4 time was not impressive and probably not what the EVO is really capable of.

What everyone should concentrate on, until new test figures come out, is on the trap speed, NOT the ET.

As many people mention, with the right 60ft, the 101.5 trap is good for a mid to low 13 second pass.

 

Hailz!

Regardless of what car that Dyno Graph came from, this thread has been very informative.

These are the kind of topics that make this forum special.

 

I'd like to see the numbers from a Dyno Dynamics roller.

 

But Claudius, how can you be so sure that the new driveline for the Evo 8 still has the same 24% power loss to the wheels as other Evos?

My guess is that it's not 315hp, but just a hell of a lot less power loss to the wheels. More like 15%.

 

12-15% drivetrain loss is typical to FWD or RWD platform depending on the cars. AWD is usually over 20+%. Remember we have 2 extra driving wheels.

 

With all the dyno numbers starting to come out REALLY high, don't you think that Mitsubishi looked at this when creating the driveline for the 8? There's no rule that it HAS to be 20-25%, remember.

 

I feel 20%+ drivetrain loss is accurate. What is not inaccuratat is dynojet dynos. They are the worst kind and it is known to read high. The dynopack is perferred now a day. I'd bet if you put it on the dynopack it'll read something close to 205hp which would be 271hp on the fly. I hope i'm wrong but what i really want to know is that what are the number pulled by a stock wrx on that same hks dyno? It's probably going to be 190hp on that dynojet dyno instead of the 164hp recorded previously on the dynopack.

Or better yet please test a evo vii on that same dyno and we would know what we are looking at.

 

Could the fact the the EVO8 has no AYC/ACD and only 5 gears attribute to this? Does AYC/ACD put more weight/strain on the driveline than just a viscous coupling? Also, what about gearing? The gear ratios are different than the 6 speed I would imagine. I think the US 8 does 0 - 60 in two gears. What about the 6 speed, does it do 0 - 60 in two gears? Maybe I sound dumb but I would think that has some effect on the driveline and especially the dyno.

Rob