Today I went to mazda dealership and saw an RX8 there. Opened up the hood and took engine covers off, and saw rotary engine is like 10 inches or so. I never knew it was this small. Will it have any overheating problems since that little engine is producing 250 HP. Or at least will it have any overheating problems on the automatic model?? All people that have RX8 now, do you guys have any problems with heating yet? Does it go a little bit over the middle condition.

negative

Are you 100% that RENESIS is very similar to the piston engines in heating?

Differences, yes. It does get hotter quicker.

Problems, no. It is not any more prone to overheating, and in fact has FEWER problems as a result of overheating (can stand being hotter without a problem).

So can you drive RX8 like 5-10 hours without stopping without overheating??

Originally posted by Haris
So can you drive RX8 like 5-10 hours without stopping without overheating??

ahem! (http://www.monito.com/wankel/lemans.html)

Originally posted by Ahura


ahem! (http://www.monito.com/wankel/lemans.html)


Of course million dollar car wont overheat. But will $30K version of that car overheat at like 10 hours of never stopping?

though they did have a problem with the torque on the automatics it was too powerful for the converter and kept destroying it. so they had to downgrade the automatics to around 225 hp instead of 247. that is mthe only problem they have had though.

Your concern is understandable but this is production vehicle and I'm sure they ran it around the track a million times to test that. Anyways, people drive their cars all day long on a normal basis, if the 8 started over-heating because of ten hours use there would be a massive recall... If you are concerned, wait six months and check this forum, your question will be answered in short order.

I think you'll have more of a problem with the fuel system than the engine overheating if you drive 5-10 hours without stopping!

Originally posted by budaman
I think you'll have more of a problem with the fuel system than the engine overheating if you drive 5-10 hours without stopping!

LOL :D

Originally posted by budaman
I think you'll have more of a problem with the fuel system than the engine overheating if you drive 5-10 hours without stopping!
probably more of a bladder problem then anything else! :D

Originally posted by Haris

Of course million dollar car wont overheat. But will $30K version of that car overheat at like 10 hours of never stopping?

It's the same damn basic design. Coolant passages are even better than the R26B due to the lack of peri-ports. The whole combustion chamber is surrounded with coolant, and the rotors and shaft are cooled with oil. Proper water and oil cooling are essential to a rotary's life, and Mazda probably made it 100% certain that the RX-8 has an adequate radiator and oil coolers (esp. after the FD3S). But I should point out that FD3S's had problems due to the turbos... not the motor. Another point is that the rotary has a greater surface area per volume compared with boingers (which is bad for unburned hydrocarbons, but I won't get into that), and this fact translates into a better cooling "efficiency" per volume.

Maybe they decided to install a bladder control pod on the RX8 at the port, and thats whats taking so long!

My 7 1/2 hour trip last weekend became 8 1/2 with a 1 hour stoppage on the Pennsylvania turnpike. (stop, go, stop, stop, go, etc for 7 miles down a mountain!) As I came back into Cleveland I hit 20 minutes of torrential rain on I-80. The car did not demonstrate any heating issues. Outside temp was 85F to 91F for much of the drive and A/C was never on more than 2 and quite comfortable.

Originally posted by ibfubar2000
though they did have a problem with the torque on the automatics it was too powerful for the converter and kept destroying it. so they had to downgrade the automatics to around 225 hp instead of 247. that is mthe only problem they have had though.

mmm slightly backwards there ibfubar. mazda was always going to release both a high power and a low power engine. but the converters couldn't handle the 9k rpm available to the high power engine due to the TERTIARY(keech) ports providing the breathing necessary. so they put it on the low power engine cars that redline at 7500 for the US because they felt they had to have an automatic version in the states to sell the quantity they have benchmarked. the real question should be does the low power auto have less horses and torque available than the low power 5speed manual in japan and europe(taking into consideration the euro emission standards).

Originally posted by oldguy
My 7 1/2 hour trip last weekend became 8 1/2 with a 1 hour stoppage on the Pennsylvania turnpike. (stop, go, stop, stop, go, etc for 7 miles down a mountain!) As I came back into Cleveland I hit 20 minutes of torrential rain on I-80. The car did not demonstrate any heating issues. Outside temp was 85F to 91F for much of the drive and A/C was never on more than 2 and quite comfortable.

How confortable were the seats? And how about your fuel economy?