Hahahah...I don't know if that is true, but it does looks like a reversed superman symbol.

 

Not that close.

I wasn't sure if you were kidding or not, but I figured it was possible that you were serious. I haven't read a lot of your posts, so I didn't know which "side" of the fence you were on... rotary lunatic or occasional heresy.

 

i want to see gordon and jim box

 

Was this just too obvious for you guys to say it?
Does everyone just know this and it's a given?
The efini emblem says rx7!!
check out this picture but I suck at drawing
hope you people see it or already knew

Sheesh...

 

this one may be more helpful

 

dooH!
post whoring almost up to 100
custom avatar

 

Imaginative, no doubt, but more wishful thinking.

When you get a chance, read about the history of the design of the 3rd gen. Efini emblem some time and what it was meant to symbolize.

 

I believe so, too, but for different reasons.

I believe that information was sparse "back in the day", and even the "experts" on the subject weren't necessarily all that expert at that time. I believe that tuners are much more knowledgable today now that many combinations have been tried (and some failed), and that there's more realization today that upgrading the fuel system, as unglamorous as it is (bigger injectors don't have the same "bling" factor as a big FMIC...), is absolutely key to keeping the engine alive at high power levels.

The number of available engine control systems is also much higher and of much better quality. "Back in the day", the PFS "gold box" was popular and the "purple box" was the hot ticket, and people were just starting to have Pettit and Mostly Mazda (M2) reprogram ECUs. Some people (Brooks and myself, among others) got pretty hot retunes and lost engines because of it. I think there's a lot more safety being observed these days, and moderation in tuning.

Four or five years ago, no one was upgrading their radiators, and the only one that was available to my knowledge, was the Mazda Comp replacement for $650. No wonder no one was bothering with it. Now there's a much better understanding on the risks of high heat and the rotary and far more people are taking steps to eliminate or reduce the chances of overheating. Back then, the one and only step most people took was getting rid of the pre-cat.

There are other examples, but I think that we're just seeing the results of a more "mature" aftermarket, and that many early losses were probably attributable to the lack of knowledge, in some cases, and the never-ending search for more power. A lot of people paid the price, and the lower number of failures that we're seeing today are the result of "lessons learned".

You are right, Gordon. Very few were using wide-band Lambda sensors for proper tuning, and many were relying solely on EGT and A/F gauges alone for their safety net, if that. Unfortunately, the rotary isn't that tolerant.

 

Nice post, Jim. I agree 100%. Re: tuning, I think it took alot of trial and error to establish the proper a/f ratio for a boosted rotary. High tens are extremely rich, and many of my piston minded friends can't believe how rich I'm tuned--they're incredulous that the car even runs....

 

I totally agree with snook!!
he does suck at drawing! (just kidding man!)

 

Right.

In Michael Ancas "Maazda RX-7 Performance Handbook" he mentions a
Infini IV model (1991-1992) a 2nd gen Turbo II, lightened up, more power, suspension upgrades, ground effects, and more. Virtually a 3rd gen testbed.