what makes engine difference? US Vs ROW

Cayman : ROW, 2954 lbs, 3.4L 295 bhp, 251 lb-ft US, 2954 lbs, 3.4L 295 bhp, 251 lb-ft US, 2986 lbs, 2.7L 245 bhp, 210 lb-ft ROW, 2870 lbs, 2.7L 245 bhp, 201 lb-ft So I heard US version use normal break in, ROW version need Hard break in?? What are those differences from engines??? I ordered Cayman end of March, will get it in Aug. So, eager to know Break in Differences.....

to the best of my knowledge , there is no difference between US and ROW engines .

But there are different measurment standards (SAE, DIN (metric) to understand. Take a look at Wikipedia for a start.

Is the Cayman 295bhp? I always thought that brake horsepower (bhp) was slightly higher than U.S. horsepower.

Flyer if you have not checked out the FAQ section you may be surprised at all the information there. For instance: http://www.planet-9.com/faq.php?faq=techdata#faq_gentech And then come back and thank all of your fellow club members who wrote the FAQs.

The 210 ft.lbs. for the US 2.7 looks like a typo to me. I've never seen that published anywhere. The Porsche site says 201 ft/lbs. The Cayman Club FAQ says 210 ft/lbs. but the reference it cites says 201.

Flyer I guess I'm being dense. The advertised bhp on the Cayman is 295 as the FAQ's say. Was that your question?

US Caymans have an additional 116 pounds of gravitas which accounts for the increase in torque. Either that, or it is a typo.

Its a typo. Thanks for pointing it out.

My question is that advertised horsepower (hp) and Brake Horespower (bhp) are 295. From my understanding they are calculated differently and bhp tends to be a higher number than horsepower output number we are used to seeing in the US. For instance, the M3 stated horespower is 333hp, BUT in Europe it is stated as 343bhp. My question is there are differnce or is it somewhere around the 295 since Porsche engines tend to vary in output? Not a big deal, I was just curious if there is a difference for the Cayman .

From Wikipedia Brake horsepower (bhp) Brake horsepower (bhp) is the measure of an engine's horsepower without the loss in power caused by the gearbox, generator, differential, water pump, and other auxiliary components. Thus the prefix "brake" refers to where the power is measured: at the engine's output shaft, as on an engine dynamometer. The actual horsepower delivered to the driving wheels is less. An engine would have to be retested to obtain a rating in another system. The term "brake" refers to the original use of a band brake to measure torque during the test (which is multiplied by the engine RPM and a scaling constant to give horsepower). [edit] hp (SAE) In the United States the term "bhp" fell into disuse after the American Society of Automotive Engineers (SAE) recommended manufacturers use hp (SAE) to indicate the net power of the engine, given that particular car's complete engine installation. It measures engine power at the flywheel, not counting drivetrain losses. Starting in 1971 automakers began to quote power in terms of SAE net horsepower (as defined by standard J1349). This reflected the rated power of the engine in as-installed trim, with all accessories and standard intake and exhaust systems. By 1972, US carmakers quoted power exclusively in SAE net hp. The change was meant to 'deflate' power ratings to assuage the auto insurance industry and environmental and safety lobbies, as well as to obfuscate the power losses caused by emissions-control equipment. SAE net ratings, while more accurate than gross ratings, still represent the engine's power at the flywheel. Contrary to some reports, it does not measure power at the drive wheels I wonder if most European manufacturers just translate the bhp to hp without changing the output number. Anyone?

There are different measurements for hp in Europe and the States. PA (European measurement) is reduced by .9863 to arrive at the SAE (US) equivalent. Porsche reports equal hp numbers under both measurements. I suspect that Porsche figures that the 1% difference is well within the rounding acceptable for official use and the variation of individual engines. Nothing to do with emissions, noise or anything else (like break in) it appears.

Yeah, I suspect the same as well.

Also, if you dig down and read the fine print in the Porsche tech spec sheets, they say their motors deliver "a minimum" of x-amount of horsepower. They have always done it this way. I've heard from a reliable source that the 3.4L CS motors, when removed and put on a dyno, turn between 295-305 HP at the flywheel. brad

My real question is , Why they need different break in US Vs ROW( mentioned in this forum for break in)??

Because there is not one. Internet myth.