Last post on Mar 13, 2012 at 4:42 PM
You are in the Mazda RX-8
What is this discussion about?
Mazda RX-8, Coupe
Jun 11, 2003 (8:12 pm)
If the RX-8 sells well enough to justify Mazda looking into a turbo for the Renesis I would guess it would be for the rumoured RX-7 since if the RX-8 is succesful the RX-7 wouldn't be far behind.
I don't know if I consider myself joe shopper but I will be buying a sports car in the next couple of years(it will not see winter) and right now I'm considering 4 cars. The RX-8, 350Z(used), G35 coupe(used) and Miata if the 2005 redesign looks more aggressive. Miata is one car they should consider putting a turbo on. I just wish they didn't make it look so cute because that is one fun car to drive but I can't get over the "chick car" stigma. But then again from what I hear the RX-8 is just as fun so it's a good compromise.Back seats are nice to have but hey it's a sports car, they're supposed to be impractical. As long as I can fit the golf clubs somewhere I'll be happy.
Jun 12, 2003 (4:54 am)
The RX-8's trunk was specifically designed to fit two sets of clubs.
Jun 12, 2003 (6:19 am)
the old RX-7 I had for a while was probably the "dirtiest" car I have ever owned - they were well-known for dirty emissions by engine design - smog check time was always a battle for me. I would take a deep breath and plunge in!
Supposedly most of that problem has been taken care of in the renesis engine, by moving the exhaust ports. So a turbo is perfectly possible in the future. I agree though, that it will probably not materialize unless they bring back the RX-7 - RX8 is supposed to be more of a sport sedan/coupe and as such the power expectations are lower.
It will definitely face stiff competition from the 350Z and G35 coupe, also 325i coupe (and sedan? - higher priced than RX8), but its sales target numbers are lower than any of those models, so I have high hopes it will make it.
#542 of 3618 side exhaust ports
Jun 12, 2003 (6:57 am)
are VERY emissions-friendly for a rotary engine.
and also reduces stress on the apex seals greatly.
hurray for side exhaust ports!
Jun 12, 2003 (8:26 pm)
One thing I am apprehensive about the RX-8 is the maintenance and service of the Renesis. I've heard the old RX-7 had reliability problems with the turbo (at least the 1st couple of years) I've also read that as long as the oil is changed at regular intervals little else is required in maintenance over a conventional engine. Is there any reason not to put synthetic in? Also can Joe mechanic service a rotary if a breakdown occurs and a Mazda dealership isn't nearby?
Is there any old RX-7 owners who have difficulties getting repairs done? Any sports car I buy I plan to have for a long time so I don't want end up with a car long term nobody knows how to repair(or costs an arm and a leg) if the Renesis only has a 4 or 5 year run.
Jun 12, 2003 (8:52 pm)
rotaries consumed oil by design - it was trickled into the engine to lubricate the apex seals...so if the new one does the same, it might be rather expensive using synthetic...
The old ones had a few quirks, my gen-2 was easily flooded if you started it up and shut it down too soon for instance, but for the most part they can be worked on by "Joe Mechanic".
Jun 13, 2003 (3:39 am)
I did read synthetic was bad for the RX7 just for the reason stated by nipponly. It doesn't burn and/or lubricate the seals correctly. I'm sure someone here with the car can explain it better.
#546 of 3618 yeah it does burn oil by design
Jun 13, 2003 (6:01 am)
Renesis does as well, just that the oil injector has improved so that very little oil is needed to lubricate the seals. (I think it's like 1 quart for every 50,000 miles or something, used to be 1 qt every 5,000 miles)
people used to recommend ONLY conventional oil, as the older synthetics formulas don't burn cleanly, and left deposits in the rotor housings. Many 3rd gen RX-7 owners have been using modern synthetics like Mobil 1 and have excellent results.
What would I use when I get the RX-8? I'll use conventional oil until some other brave soul tries synthetic and reports back significant performance improvement
Jun 13, 2003 (6:51 am)
The RX twin turbo did suffer from detonation problems, but a smart driver knew how to avoid that. The basic rotary engine is good for 150K no problem, with extra good maintenance.
Also, Mazda is the only Japanese company to ever win Lemans, and they did it with a rotary engine don't forget.
Jun 13, 2003 (10:39 am)
What is mazda recommending as far as type of oil and change intervals with the RX8? If they are recommending synthetic, you wouldnt still use conventional I would hope!