tc86

if i undersatnd correctly, the euro accord has a 190 HP engine, compared to the US version TSX's 200 HP engine...does that mean that the euro accord is even slower than our TSX? and if so, then why do i see people wanting to swap an euro accord engine into their tsx's?

Dan Martin

I think it's the Euro-R that they're after: http://www.rsportscars.com/eng/cars/accord_euro-r.asp

tc86

oh ok, that would make more sense. i'd definitely take the 20 HP increase despite the 14 lb-ft. loss of torque.

Dan Martin

I think it's the same engine that is in the RSX-R but I might be off on that one....

dom

I would'nt, its everyday driveability would suffer. And yes Dan it is the same engine.

I know its been explained before but I still can't understand why our K24 is'nt making more power than it is. The Euro R/Type R is putting down 220 from a 2.0L while we're at 200 from a 2.4L The only true explanation I can come up with is cost and fuel consumption. The K24 in the TSX is considerably worse on gas than the K24 in the Accord. I'd imagine a 240HP K24 (which I think is possible) would be pathetic on fuel.

Dan Martin

I think we'll start to see the 240hp k24 engines when the hondata comes out and some cams are available. The 8000rpm redline on the k20 helps the HP numbers considerably. I don't think I would want to change the TSX fuel cut point just because its just not designed to be revved that high but there have got to be a lot of gains to be made by changing the fuel maps.

Maxboost

I'm sure that the main reason that we're not breaking 200hp barrier comes from the fact that we're not able to go through that 7400 cut out. It's a matter of physic actually, more work = more power. And I think the reason that they don't want that is because the risk of blown engine.

ldubuc

In order to have more torque you have to increase the stroke of the piston and reduce the bore. When yo do that you augment the piston speed. Piston speed in the TSX are 22m/s at redline which is very good. Few production engine can get to this speed, the current max piston speed is 20m/s. This is why the TSX max RPM is around 7000. The engine in the TSX is great, you get torque at low RPM and HP at hi-rev.

ld

BLKEURO

Good explaination ld

Viscum48

European Accord with 2 l engine is MUCH more fuel efficient than Euro Accord with 2.4 engine (or TSX);

http://www.honda.co.uk/cars/newcars/...ptionType=spec


Here are the numbers (range for four variants of Accord with 2.0 l engine).


Urban (mpg)
28.0- 23.9


Extra urban (mpg)
47.9 - 44.8


Combined (mpg)
38.2 - 34.0

Also note CO2 emissions are lower for the 2.0 l engine compared to 2.4 l engine (apparently in Europe data for CO2 emissions must be shown in all the specs - some people there must think that Kyoto should be kept alive...but we do not care and just need more power):

2.0 l
CO2 (g/km)
176 -200

2.4 l
CO2 (g/km)
214 -223

ostrich

Viscum48, please bear in mind that the data from the Honda UK website refers to Imperial gallon, which is much larger than the US gallon. Therefore, every Imperial gallon would give you many more miles than a US gallon. I expect that the numbers will be much closer once you have done the conversion.

jeffreytchui

Emissions controls on the K24A2 restricts the engine from its full potential. The K24 ECU just needs a reflash or some BOOST (both still waiting). I think a 14:1 fuel mix ratio would do the trick. Damn you Hondata ,

i`m j/k

Check out Comptechs supercharger for the TSX it adds about 40whp for $3995 and its almost out.

Viscum48

Ostrich, you are right that these numbers are in imperial gallons. The coversion factor is 1.2. This makes 39.9-37.3 miles per US gallon for instead of 47.9-44.8.

I think it is still quite a big difference compared to what the 2.4 l engine achieves. (The site for Honda UK gives also fuel efficiency in l/100 km)

mel4fun

to the best of my understanding, the Euro-R (CL7R) K20 engine has vtec function on the intake and the exhuast loop of the engine, and a higher compression ratio.

Whereas the standard K20A (CL7A) or K24 (CL9) engine only has the vtec on the intake side and with a lower compression ratio.

yfin

Yes - it is 10HP down but is the same engine.

It is not slower as it weighs less than the TSX. My 6MT Euro K24 weighs between 1360kg and 1390kg (depends on which brochure you read).

The TSX weighs around 1465-1474kg (again depends on source).

So around 100kg heavier.

yfin

My Accord Euro K24 has a compression ratio of 10.5:1 - same as the TSX. VTEC is the same.

My Euro gear rations are different though.. Does anyone understand gear ratios -what does this mean?

1st 3.533
2nd 1.88
3rd 1.354
4th 1.027
5th 0.825
6th 0.659
Reverse 3.583
Final 4.388

TSX

1st 3.267
2nd 1.880
3rd 1.355
4th 1.028
5th 0.825
6th 0.659
Reverse 3.583
Final 4.7

MSZ

If they decided to push the compression ratio to 11.5:1, 260hp on our engine is possible.

sauceman

NO.

At least not with upping the compression alone. For every full point of compression you add, you'll get +10hp, max.

You're right. BUT the K24A2, the TSX's version of the K24 has variable cam profiles on the exhaust cam, just like the K20A and K20A2.