mazdaRXstyle

New to rotary and rx7's used to be an mx-3 owner. Anyways... is it safe to use water wetter?

Also is it safe to use fuel injector cleaner?
Safe to use engine cleaner that you put in oil?
I know in most mazda engines the engines are meant to rev past redline without hurting them. is it bad to go a little past redline every once in a while. I did some searching and quite a bit of research in the last week those are some leftover questions I have.

Another questions just popped in my mind. How much of a shot of N20 can you put on a stock N/A 13b? Assuming it can take N20. Sorry for not searching hard enough. Id also like to put some pics of my rx7... its stock but very very clean.

AcidShock

iTrader: (49)

For starters you can check the FAQ at the top of the page, I am sure it will answer a lot of lingering questions that you have about rotaries and the RX-7 specifically.

Now for your questions:
Yes, it is safe to use fuel injector cleaner. Probably a good idea if you just bought the car or had it sitting for a while. Fill up the tank and dump one of those little bottles in there.

A lot of people use MMO or Marvel Mystery Oil, I have heard and read nothing but good things about it. It can go in your gas tank or you can mix some in with your oil to help clean junk out.

Redlining every once in a while is a good thing for the rotary because it helps to keep the carbon build-up on the rotor seals and faces lower. Most effective if not just in first gear when you redline. Rotaries love to rev just so you know.

As I do not have much experience with nitrous oxide I am not one to give you detailed advice about that. A word of warning though, since you are new to this car and engine, I would learn as much as I can before installing major upgrades such as a nitrous oxide system. Other than that you are probably going to need to upgrade your stock fuel pump to deal with the increased flow of fuel so as to not run lean. I am sure someone else will post with more information about this if you are really considering it.

NZConvertible

The RX-7's EFI system is entirely conventional, so yes injector cleaners are fine, but they don't do a very good job of cleaning the secondary injectors because they only fire over 3800rpm. Over a tank of gas you only use the secondaries a very short amount of time, so they receive little treatment.

If it's never been done, it's much more beneficial to remove the injectors and have them professionally cleaned. No in-tank cleaner will come close to doing it that way.
Engine flushes that you put in, run for 15 minutes and then drain are fine, but I personally don't trust any oil additives that you leave in.
No, Mazda put the redline there for a reason.

Fingers

Thats just plain WRONG. Redlines exist for a reason, whether its for valve float, fuel delivery, spark reasons, doesnt matter, but without extensive modification to the engine, you should NOT be going past redline.