Rx7Forums.com

**2ROTORMOTOR** · 05-25-2004, 07:49 PM

n/a fd engines????

Johnny · 06-05-2004, 07:20 AM

Originally Posted by AusTexRex

Originally Posted by ZpSand

I am thinkin about getting a 3rd gen RX-7, and i was wonder how you keep the 13b rotory engine running...i've heard they can be unreliable

Those are just rumors because a lot of people didn't know how to care for a rotary engine, blew them, then bashed the engine for it.
Change your oil frequently and monitor it's level as oil is part of the combustion process. In the past using Synthetic oils would destroy a rotary engine as they were not as refined as they are now. Supposedly they work fine now, but I still use straight oil myself.
Aside from that take it out at least once a month and blast the rpm hell out of it (don't redline though) and get it revved up, this'll blow a lot of the crap out of the engine. If you're still having problems it's most likely a carbon buildup (the reason you should only use 92+ octane) and there are ways to clean that without taking the engine apart.
Summary: They're reliable as hell, pistonheads are just scared of a new engine. They did the same thing to the boxer 4 (WRX engine).

"newb question"
so when would be a good time to change the oil every ?? miles?

**AusTexRex** · 06-05-2004, 04:46 PM

I change mine every 1.5-2k miles depending on how the oil level is, the color of the oil, how hard i've been driving it, and if there is any gasoline fumes in it. Since oil in a rotary engine is mostly part of the combustion process it isn't ran through the engine and put back into the pan like it is on a piston, so the oil stays fresh for longer. BUT, oil can clump or when ran through the turbo get junk in it, and throwing that into a rotary engine can be bad. I prefer to change it every 1.5k miles and not worry about it. I only use real oil I don't mess with synthetic, there used to be plastic sand particle in it that were terrible for rotary engines. There aren't anymore... but I still prefer the real stuff.

Johnny · 06-05-2004, 05:39 PM

thanks always feels good to learn something new everyday

**Shaggy** · 06-05-2004, 10:40 PM

Hey Aus...how long do you wait before you change the oil if you don't go the 1.5 k miles...2 - 3 months?

**AusTexRex** · 06-06-2004, 05:05 AM

really depends on how I've been driving it lately, how hard and all of that. If it's been sitting I'll change it in 3-4 weeks. If I've been driving it regularly probably 1.5 months.

**black rocket** · 07-14-2004, 11:39 PM

Originally Posted by AusTexRex

lol. If there were any N/A FD motors I'd love to buy one, put some spacers in it and put wide rotors in it. Bridge port, then probably slap a S/C on it.

I'd rather slap on turbo than s/c.

turboRX7 · 08-18-2004, 08:44 AM

ok can some1 clarify about using synthetic oil? is it good or bad for a turbo type II? if not whats a good oil weight?