RX7 3rd generation

[NSX-R-SSJ20K]

does anyone have any good mechanical knowledge of the rotary engine ? I need some help deciding if i want to buy one!

What can you mod on the rotary engine itself excluding turbos?

any good setups you can recommend ?

is nitrous worth using and stable on a RX7 ? cuz i know the engine is so
much different

[sinfestboy]

sigh.

I know more about the rotary than you want to. but I dont feel like typing so head over to www.rx7club.com/forum

[RXtony7]

Yep, what he said. Also there is teamfc3s.org

[FC3S]

According to Japan's infamous rotary meisters, RE-Amemiya; FEED; Knight Sports; PanSpeed, it is better to leave the engine internals original up to 350hp. Above 350hp, normally they use 3mm or lighten rotors to withstand the extra pressure. Lighter rotors increase compression ratio coz high compression means engine is healthy, strong.

Another alternative is porting. There are side porting(normal), bridge port, street port(mild) and peripheral port(racing). Porting is a must when you add big turbos and extra injectors to take advantage of the extra fuel intake for safer high revving and longevity.

I would recommend HKS To4s turbo kit and i/c upgrade or Trust TD06SH-20/25G turbo and i/c upgrade coz of availability option. Both upgrades can go up to roughly 450hp safely.

I am not familiar with nitrous so cannot comment at this point of time.

[Devilbat]

Unless you like to do a whole lot of wrenching on broken shit and engine rebuilding you don't want a 3rd gen RX-7 with a rotary.

The powerplant in these cars is a total POS.

[FC3S]

I own 3 rotary machines so tell me about it...what is the broken shit and POS about then??? There is no lots of wrenching and engine rebuilding.

What do you know about RX-7 and rotaries itself??? Driving only a M3 you are not qualified to comment :o

My father owns a E30(ex) & E36 M3 and I have testdriven them for 6 years and it is still nowhere near rotary. I can tell you that rotary is as good as, if not better than BMWs.

[Steel]

Originally posted by Devilbat
Unless you like to do a whole lot of wrenching on broken shit and engine rebuilding you don't want a 3rd gen RX-7 with a rotary.

The powerplant in these cars is a total POS.

yeah, because you're the rotary expert! yeah total POS, 265 HP and 1.3 litres! yeah!

[VR6Turbo]

the TT 13B has a higher specific output hp/liter than any other factory car on the road- 196 horsepower for every liter!!!

[MyGTR34]

I think that devilbat is wrong about the "powerplant" in these cars being a POS. The only thing that might be wrong with these cars is the driver. The engine can be a great and powerful piece of machinery as long as you dont rag on it too hard. Thats where the problems begin, when the driver of the car over revs it or races the living crap out of it while its completely stock and expects after market performance out of stock engine parts, especially internal parts like apex seals, ports, and injectors. these things were made to only handle the amount of horsepower that the car came with stock. This car is awesome and can be one of the most dependable, most powerful street racing car you can find, if you know how to take care of it. For those who dont know how to or arent capable of understanding how this engine works, I pitty you when an FD3 pulls up next to youand makes you and your car look like a POS, plus, chicks dig 'em. :grey:

[Highrevn7]

Yeah, it is true you have to upgrade the internals if you want to play rough.

As for NOS i have experience with it and it is very safe if you upgrade the fuel system exp. the injectors.

For specs order a catalog from racing beat (704) 779-8677. They explain it all very well...you have to have this catalog if you have a rx-7 or are interested in one..

And yes, if you cant pick up a chick in a fd3s something is very wrong. I had no problem in my 89 rx-7 gtu (black, 5spd & mint)..

piece

[VR6Turbo]

I dont think that MyGTR34 could have put it any better!!!! I totally agree with him!!!! If you want to play with the big boys in a stock RX-7, get 3mm apex seals!!!! They will handle the higher revs so much better!!

[Purpura Delujo]

Originally posted by Devilbat
Unless you like to do a whole lot of wrenching on broken shit and engine rebuilding you don't want a 3rd gen RX-7 with a rotary.

The powerplant in these cars is a total POS.

Shutup. If you even OWN an M3 you can't say shit about a 12A,13B or a 20B, what else do you think the FCs came with besides a rotary? A four banger?

[flylwsi]

much agreed...
if you don't want to replace broken stuff, upgrade the cooling system, b/c mazda skimped on it to save weight...

if you upgrade the cooling system, you should not have issues.

the factory manifold on most cars is cracked from the excess heat already, so you'll need to upgrade it.

switching to a single turbo will alleviate vacuum probs, which will be an issue b/c there's a rats nest of vacuum lines in there.

(i read somewhere that upgrading the vacuum lines, replacing them with better, nets 10-20 hp, depending on how shot your factory lines are)

there's not much to the motor to upgrade, as noted, b/c there's rotor housing, rotors, and not much else.

upgrade the cooling and vacuum lines, and you'll be surprised at the power you make

[Evomaniac]

Originally posted by Steel


yeah, because you're the rotary expert! yeah total POS, 265 HP and 1.3 litres! yeah!

2.6 on the 3rd generation rx7 if you want to use logic over stupidity.:help:
-Dave

[Evomaniac]

Originally posted by Devilbat
Unless you like to do a whole lot of wrenching on broken shit and engine rebuilding you don't want a 3rd gen RX-7 with a rotary.

The powerplant in these cars is a total POS.

engine rebuilding is only needed if it's a race application and you got over 700 hp on it or if the rotary has over 100k on it or it's a oldie.

I see that no one bothered to discuss about using nitrous on a rx7 well i previously owned a rx7 and i use a 75 shot efi stage one which i also currently have on my scooby, and it keep's it stable enough, it's good for turbo rotary car's (does not apply for converted n/a rx7's) because it diminishes turbo lag how cool is that.
-Dave