HP and TORQUE differences

They're wrong!

There's a lot of wrong info on those specs. Don't take those for granted guys. Guve them a few days to fix it.

The specs are now

2.0 148hp, 135lbs-ft and the 2.3 160hp 151lbs-ft !

-Frank

That seems much better and more inline with what can be expected, considering the compression ratio and teh gas type used.

Those guys are on crack. Thats probaly what happen with the RX-8 info. 250hp went to 247 then finally down too a whopping 238hp.

*shrug* RX-8 performs as promised... HP numbers are nothing but numbers.

Yeah the RX-8 did perform nice when I test drove it, but I would loved it more if it had more kick in the pants kind of feeling.

It performs the same as promised, was my point. The 0-60 numbers were the same despite the 13 HP decrease.

Correct!

The RX-8's performance did not deteriorate from the day you bought it until the HP fiasco came out. If you think you did it's all in your head. If someone told me my 130Hp PRO really has 105, do I care? Nope! The car drives just like before - very very well

Actully its not yet known that RX8 can hit mid 14s like mazda said. All good drivers took their cars to the track and some barely got into 14.9s. Most of the drivers got 15.2-.5. I dont know. Engine might need more than 2000 miles to braek in cause its rotary. Anyways, we dont know yet if the car can hit 14.5s. I hope it can.

The 0-60 times are certainly on the dot with Mazda.

Haris said:

Actully its not yet known that RX8 can hit mid 14s like mazda said. All good drivers took their cars to the track and some barely got into 14.9s. Most of the drivers got 15.2-.5. I dont know. Engine might need more than 2000 miles to braek in cause its rotary. Anyways, we dont know yet if the car can hit 14.5s. I hope it can.

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Thats funny because I can hit those numbers with my MZ6s. 8) I would love to race against one at the track.

The rumor is that Mazda's numbers on the RX-8 were done running 100 octane fuel.

It seems that people that have taken an RX-8 to the track running 100 octane fuel hit the expected numbers in the 14s. Others running 89 or so post slower times.

This thread is going off on a tangent, but hey, as long as it's a good tangent...

They were aiming at 250 hp in all markets, they didn't quite get it, but nobody really cared about the 3 hp drop. 250 hp was just a silly bragging rights thing. Similarly, they were aiming for 150 hp on the MZ3 2.0, but they got 148. In international markets with better fuel, it could be tuned for over 150 hp.

The RX-8 drop to 238 was due to last-minute US emissions tweaking. I think the same thing happened to the 6s, but it wasn't so big a difference (from 220 to 218). The Renesis may be a big improvement over the old 13B, but it's still more emissions-sensitive than any V6. I hope they've already accounted for that sort of drop with the 2.0.

The difference isn't that international markets have BETTER fuel, it's that in the US, they tune for the lowest level of fuel, in international markets they tend to tune for hte highest level.

MZ6ZoomZoom said:

The difference isn't that international markets have BETTER fuel, it's that in the US, they tune for the lowest level of fuel, in international markets they tend to tune for hte highest level.

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False and true. In Europe and Australia/NZ, "regular petrol" is 91 octane, and "premium" is 95. I challenge you to find a gas station in the US that serves 95 octane. But yes, US market cars are tuned for 87 octane, while European cars, even ones with smaller engines like the Mini and VW 1.8T, are tuned for 91+, which is our "premium/super".

folderol said:

In Europe and Australia/NZ, "regular petrol" is 91 octane, and "premium" is 95. I challenge you to find a gas station in the US that serves 95 octane. But yes, US market cars are tuned for 87 octane, while European cars, even ones with smaller engines like the Mini and VW 1.8T, are tuned for 91+, which is our "premium/super".

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You are also correct and wrong

They rate the fuel differently - it is the same fuel. Their 91 is the same fuel as our 87.

MZ6ZoomZoom said:

folderol said:

In Europe and Australia/NZ, "regular petrol" is 91 octane, and "premium" is 95.

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You are also correct and wrong

They rate the fuel differently - it is the same fuel. Their 91 is the same fuel as our 87.

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...must...resist...urge...to search google for papers on octane calculations... too strong..

You're right. The rest of the world calculates octane differently than North America. But if what you said about tuning for the higher grade fuel (their 95, our 92) is true, that makes it sound like the car makers are in cahoots with the gas stations to sell higher-grade fuels just because the manual recommends it. People driving European cars here can probably get by with regular fuel, but that darn manual advises against it.

I think America, in its more-is-better way, would love to serve 95 octane. Sounds great, doesn't it? "SUNOCO ULTRA 99! Any more octane and YOUR CAR WILL EXPLODE!!"

Well, then wouldn't all the cars have to have high compression ratios? Higher octane doesn't automatically mean better performance. Will a 10:1 handle 95 fine?