bmencig

Please see dyno test of my stock version of Honda Accord 2.4 (europe version).

I made this three days ago, just to have a graph to compare it with future upgrades.

You must use factor 1.15 to get Horse powers to wheels. I made three measures and that means that average HP is 182HP on wheels. It's not 190HP as it is written on specs, but we must also know that.

- dyno test was made in gear 4
- there were no "extra" air system beside "ventilator". It's different as would be on the road
- machine is 6.000km old.

I speak woith some colegues from Honda Club Slovenia and they all told me that facotr for K20 and K24 engines are 1.15.

I am using 98 octane gas!

biker

HP ratings listed in brochures is always at the engine not wheels. If you got 182HP at the wheels, you got one of the great ones off the production line. That probably is even more than some TSXs dyno at.

Looking at the graph though, it would seem about right for an engine rated at 190HP at the engine.

bmencig

Dyno test for this picture shows next:
- 158.3 HP at 7000rpm on drive shaft (not on wheels)
- max 190Nm torque on range from 3500 to 4000 rpm

I think graph is perfect to go on tunning :-)))

gogozy

what area of world are you at?

biker

Slovenia. That would be Eastern Europe for those geographically challenged.

bmencig

In two wekks time we'll Slovenia becone EU member :-))) Euros welcome :-))))

xizor

I think you meant, must use 1.15 to get horse power at the crank .

There's no hard rule about the % lost at the wheels, but I've found from looking at TSX dynos that 18% is closer than 15%, so I usually multiply by 1.18.

For yours, 159 x 1.18 is 188HP, which fits pretty well for a stock engine.

Just my 2 cents

bmencig

I got 3 results at dyno.
1st: 162HP
2nd: 158HP
3rd: 156,7HP

Because of this I used average 158HP. Your theory with 1.18 is likely really to be the right one.
if I use 161 x 1.18 = 189,98 = 190HP

Maxboost

Damn 98 octane!!! That's awesome, too bad we can't find 98 at any normal pump. Instead you have to pay for those 100 octane if you really want something diff.

biker

The normal grades of gas in most of Europe is 95 and 98. I'm not sure though if the octane numbers are calculated the same as the US.

k24

In Europe 98 is nothing special. We also (in Estonia at least) have V- power and Nitro3000, which supposed to have even higher octane. (around 100 I guess) and you can get it from almost any tankstation. Does anyone know what´s the difference between tsx and accord in europe??? Only the ecu sw or something else? And I don´t understand how you can use lower octane fuel while the compression ratio is the same?

Jim J

I knew 2500 was magical.

we've got at least 90% of max Torque from 2500-5700

me likes...

biker

The K24 engines come a variety of state of tune, depending on the platfrom it's used in. If I got this right it's used in the following vehicles with corresponding HP ratings:

USDM Accord 160HP
CRV 160HP
Euro/JDM Accord 190 HP
TSX 200HP

You can use octane all the way down to 87-89 safely but the engine will change the timing to prevent knock to such a degree that you start loosing noticeble power.

JTso

iTrader: (2)

When the intake manifold is heat soaked from multiple runs, you will notice a lower hp output as indicated in almost all dyno charts posted on this site.

xizor

d'oh, figure out a small math mistake that I have been making for a while.

While 1.18 is a good factor to multiply by, it is a mistake to say that means 18% loss at the wheels. Here are some examples

161 x 1.18 = 190

This equation says, 118% of the whp is the horsepower, which is not the same as saying 82% of the hp (100%-18%) is the whp. As 190 x .82 = 155

A better way to look at it is

WHP = HP * (100% - loss at wheels%)

So

161 = 190 * x
x=.85, which means there IS a 15% loss of engine HP at the wheels, not 18%.

Where does a 1.18 factor come from?

1/1.18 = .85, doh! So the TSX in general does fit the 15% loss at the wheels. this isn't totally related to the post, but hopefully it helpful to someone searching.

Ekblom

What i've heard it that TSX and the Euro Accord is having the same power HP but the way we calculate hp is different (SAE Hp and DIN Hp) and that this would explain the 10 HP differance.

Isn't this a possibility?

TinkySD

I hate when my Vlaga gets to 58% !

But seriously how do you read the torque units on this graph?

I don't believe thek24a2 and 190ps motors are identical.(someone from australia mentioned it was the k24a3, I believe.) You can see the shape of the torque curve is slightly diffent. I'm guess there might be a different intake manifold or maybe it' sjust ecu tuning.

alnug

i think there is some discrepancy about how Europe measures the petroleum grades when compared to US. i suspect the 98 octane figure quoted is not octane number but the RON number (research octane number?) this is not directly interchangeable with the US octane number....the RON number is alway slightly higher than the equivalent US octane number