ecr7

Well ive had my car for close to 2 months and i all ways hear "Those cars can turn some high rpms" then i here dont over rev them like its really not good( which i dont do b/c my car is a dd,lol). but i just wanted to know the truth from someone who knows what they are talking about

Phearthe-Rx7

iTrader: (18)

they can rev higher than a regular engine....but just like a cylinder engine.....you abuse it, it will break eventually

ecr7

see i figured if u abuse anything to much its going to break, but whats a "safe" limit on your rev?

jgrewe

iTrader: (1)

8500 rpm is safe if the car is in good health. If your oil pressure is normal and you don't hear or feel anything strange when you rev it its OK to take it up there regularly.

MazdaMike02

iTrader: (4)

They don't really redline higher than piston motors.....Theres old Accords that redline around 8500 rpm...people I know run them in 4 cylinder racing. Not only that the VQ35DE which is in sooo many of Nissan's cars is strong as hell and it revs around 8000 rpm thats why they call um "high revvers."

Its not good to overrev anything...and your more likely to have a catastrophic failure in a rotary because theres far less parts than a piston motor...basically a rotary relys on a small group of parts like a 2 stroke. Many of these parts are fairly important for normal engine operation, like...apex seals...They're the weak link of a rotary engine.

jgrewe

iTrader: (1)

A lot of people have their RPM reference point based on an old 454 Chevy not a new Honda S2000. So to them anything over 6000rpm is just plain crazy. lol

rx7 FC TII

iTrader: (3)

do alot of research. this topic has been covered alot

also dont believe what most people outside of this forum..(.and inside this forum too) say. alot of rumors go around about rotary engines and most are false.

mainly if its a healthy engine then yes redline it every once in a while. personally i redline mine once a week.

CyberPitz

I like to redline mine once a week, just to keep it clear of carbon buildup. I've been doing that since I got it early last year, and the engine is still alive, so it can't be too bad on it :P

I'd suggest keeping it around 6k RPMs when doing much, since really, you shouldn't be going that much higher anyway. It's safe to stay around there, and you don't risk damaging your engine as much.

ericgrau

iTrader: (1)

If the engine's warmed up and in good shape, you should rev it high every once in a while to keep it clean of carbon. Keeping the revs low all the time is asking for carbon buildup. It can also cause stuck auxillary ports. The aux ports are extra intake ports that open at high rpms to give 25 more horsepower, while closing at low rpms for better low rpm power, fuel economy and emissions.

RotaryResurrection

iTrader: (8)

Look at what was around when the rotary first came to fame in the US. A bunch of pintos, chevettes, and 350 powered camaros that redlined at 4500. Even most 4 cyl's back then were carbureted and set up for midrange, so they did not have a high redline either. So here you have this engine that goes all the way to 7000 or more, and that is where the rotary got it's high rev heritage from.

Still in the mid to late 80s most vehicles had a 5-6krpm redline. My 85 'vette redlines at 5k and drops off steeply afterwards in stock form.

Then in the 90's and now engine tech has come a long way and the HP wars have started up again, including the japanese models, so a lot of research and design has gone into many platforms and the engines are more advanced. Even a stock ls1 v8 can turn 6500 or so without major headaches from what I understand.

Comparing your 20 year old FC to today's cars is silly. Back when the FC first came out, not a lot could compete with it. A stock 87 turbo II cost around 20k, was rated at 185hp, and could handle and brake with the best of them at the time. A stock 87 corvette cost around 30k, made 230hp, and the FC arguably handled and braked better than it. And there is no comparison with mustangs and camaros. So unless you start comparing special edition production models, or exotics, there was not much around back then that could touch an FC for the money.

But these days every FWD maxima has 300hp and runs 14's in the quarter, all the while getting 30mpg. So of course when you compare the new sportscars to the old ones, we know who is going to win.

As for your car's safe redline, ever looked at your tach? Mazda, the manufacturer of the engine, gave you a good suggestion for a stock vehicle at 7k (8k for s5 NA). Not because the engine can't turn faster, but in stock form with stock peripherals there is no reason to go further. The power drops off afterwards. Now, if you do some mods for better airflow, the engine can make power beyond the stock redline. Mazda has limited you to 8100 or so on a stock ecu (9100 for s5 NA) which is probably the max for an internally stock engine regardless of airflow/mods.

That said, you should also consider that your engine is now 20 years older than when it was new, and is no longer making ideal compression or power. The seals internally are somewhat worn, and there is no use in pushing it too hard because you are asking for trouble. The best thing to do is make a couple of daily trips to redline and drive it moderately the rest of the time.

ecr7

Thanks i learned a lot im just slowly become a rotary guy

2ndGen.rocket

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Mike0071

So it's good to redline to kick carbon out of your engine, but only every now and then, basically because the engine's old.

RotaryResurrection

iTrader: (8)

My general rule is that you redline at least once per trip, and otherwise shift in the 3-4.5k range for normal driving.