CX7 HP: 244 or 238??

[simonxda]

Just wondering whats the HP for CX7 244 or 238? As stated on the Japan website the car is 238 and in USA is 244. So which is the correct or the Asia CX7 got lower in PS.

 

[otnielarencibia]

check your window sticker.

 

[cruzdreamer]

Supposedly 244 but who knows for sure. When my RX 8 came out there was a big fiasco about actual horsepower numbers...they quoted the RX 8 auto at 238 (can't remember the exact figure)and it was really 197. Anyone who bought it at that stated HP either were offered to have a buyback from Mazda or have $500 and 4 years of free scheduled maintenance including oil changes. I kept mine since I was happy with it no matter what the HP numbers really were. Nice never paying a dime to have the oil changed or anything else. Hmmmmm......

 

[dmitrik4]

i don't believe Japan uses the SAE measurement that the US uses, and in any case, PS is not the same as HP. i wouldn't get too worked up about it if i were you.

 

[Installshield 2]

Mazda is notoriously bad at power ratings, especialy Mazda NA doing conversions...the SAE automotive single BHP was changed a few years ago to give a more "realistic" representation of what a BHP rating is, and I don't remember if it is still referred to as "SAE BHP" anymore...but for the scope of this I will just keep calling it that...The DIN ratings of Europe and Asia (the PS rating) were not changed however, but were regarded (based on their metric nature) as more accurate to begin with, for the most part...

The Miatas ran into inflated bhp ratings, the RX8 did, the 2.0L proteges were probably several bhp less than their rating too, no one really made a big deal out of that though... and now the CX-7 I guess...but the ratings are arbitrary anyway, at leasts if it is comparing PS to SAE numbers...which could be the case with this...

There is no easy direct conversion for PS to SAE bhp, and PS ratings are usually a few higher than SAE...so if is just the Asian sites claiming 244, and U.S. being 238, its just a matter of them using the different standards...now if it is saying those numbers as both PS or both SAE, then something is up...again...

 

[mikey1981]

Until you get your specific car on a Dyno - theres really no way of knowing how much true horsey power is under the hood.

 

[simonxda]

Did a check on the catalog show CX7 here 175kW = 234.67HP which is 10HP different from US 244HP(181.95kW).

Japan / Aust. spec:
175kw = 234.67hp = 238ps
http://www.mazda.com.au/cx7/specifications.aspx?ID=88

USA spec:
244hp = 181.95kw = 247.38ps
http://www.mazdausa.com/MusaWeb/displayPage.action?pageParameter=modelsSpecs&vehicleCode=CX7

Hmm... I wonder which is correct, US or Asia? If its Asia, then acruzdreamer you can have another 4 years of free service.

http://www.mr2ownersclub.com/converter.htm

 

[dmitrik4]

which "horsepower" does that converter use? and keep in mind that it's entirely possible that cars sold in the US and cars sold in asia aren't exactly identical. it's entirely possible that the asian-spec models are 6-10 hp different. the top speed limit in japan is ~48mph anyway, IIRC.

 

[cruzdreamer]

Makes me wonder.....It really does not change anything for me, but it would be nice if there were an error and Mazda wanted to right it again, I would not mind getting $500 plus free oil changes for 4 years!

 

[simonxda]

which "horsepower" does that converter use? and keep in mind that it's entirely possible that cars sold in the US and cars sold in asia aren't exactly identical. it's entirely possible that the asian-spec models are 6-10 hp different. the top speed limit in japan is ~48mph anyway, IIRC.

Hehe.. I'm not sure which hp converter does this site use, but the site is about Toyota MR2car. So I guess its talking the same hp converter.

I dun think it make a different whether Japan speed limit ~48 most country are 66mph on hightway. 10hp less would bring your car 1 sec slower from 0-100km.

 

[njcx7]

we're not getting 238 or 244 AT THE WHEELS, that's for sure. the CX is rated 244hp, but i would bet we're only getting like 190 at the wheels...there's a big difference.

 

[mikey1981]

yea - i forget what post - but someone posted a graph of a dyno sheet. I believe the HP and Torque were both peaking around the 200 mark, nothing was coming close to the rated numbers.

 

[erhayes]

Engine HP & Tq are always measured at the flywheel and not at the driving wheels unless stated otherwise.

 

[Dalton]

Supposedly 244 but who knows for sure. When my RX 8 came out there was a big fiasco about actual horsepower numbers...they quoted the RX 8 auto at 238 (can't remember the exact figure)and it was really 197.

At least here in Europe there are two types of engines (tuning) available for RX8, one is 141kW (192ps)/7000 rpm and other 170kW (231ps)/8200 rpm

Maximum torque (Nm/rpm) 220/5000 211/5500
Redline 7500 9000

So you have 231 instead 244 not 197!

Difference between Hp and ps would be like...

1 horsepower [metric] = 0.986 320 073 horsepower [international]

so 100 ps = 98,6 Hp

 

[ZoomZoomH]

At least here in Europe there are two types of engines (tuning) available for RX8, one is 141kW (192ps)/7000 rpm and other 170kW (231ps)/8200 rpm

Maximum torque (Nm/rpm) 220/5000 211/5500
Redline 7500 9000

So you have 231 instead 244 not 197!

in the north american market the automatic RX8 only came with the low power engine (192ps). only the manual RX8 came with the 231ps engine.

 

[Dalton]

in the north american market the automatic RX8 only came with the low power engine (192ps). only the manual RX8 came with the 231ps engine.

We didnt have no automatic at all - but 4 speed AT is crap anyway.

Low power RX8 came with 5speed manual
and High power with 6speed manual. (drive2)

BTW.
Thing are looking better for RX8 buyers now because
You will get more hp and more gears in your automatic...


1.3 Liter RENESIS 2-rotor rotary Standard
6-speed (cool) AT with paddle shifters and Adaptive Shift Logic Available
Horsepower, SAE net 212 @ 7,500
Torque, SAE net (lb./ft.) 159 @ 5,500
Redline 7500
Displacement (L) 0.654L x 2 Bore x Stroke (inches)

1.3 Liter RENESIS 2-rotor rotary Standard
Transmission, 6-speed manual overdrive (short throw shifter) Available
Horsepower, SAE net 232 @ 8,500 (cool)
Torque, SAE net (lb./ft.) 159 @ 5,500
Redline 9000
Displacement (L) 0.654L x 2 Bore x Stroke (inches)

 

[offset_98]

Europeans are getting 275hp...go figure.