cisco76

in the 89-91 na and turbo 2 rx7s how fast can u go into each gear before shifting to the next? i know it redlines at 8000. how much more is achieved with an ecu upgrade. just curious and since i dont currently on a 7 yet, otherwise i would find out on my own.

cisco76

is the gearing diff between the na and turbo models?

BDoty311

Well im not sure what the extra 1000rpms do, but in my 87 heres about how it goes:

1st-30mph
2nd-60mph
3rd-90mph
4th-120mph
5th-170mph

cisco76

at what mph does the stock ecu limit the 2nd gen to?

cisco76

at what mph does the ecu limit the 2nd gen to?

BDoty311

No rx-7s have speed goveners. Thank God. You car will be stop by resistance before gearing or ecu.

cisco76

no speed goveners? hey i learn something new today. cool, what bout rev limit? someone told me they can easily rev up to 12000 but the factory sets them lower for reliability? anybody confirm this?

BDoty311

The motor cannot take 12K rpms. It can with a few motor mods but not stock. You wont be making any power up there anyways, so dont worry about it.

jreynish

iTrader: (2)

at 12000 rpm you would not be producing any extra power unless you have a heavy periphrial port... And the engine will not handle that much rpm for very long...
the e-shaft does flex a little the higher the rpm the more flex as you know the more it flexes the more the rotors shift in the housing making it possible for them to break an apex seal... if anybody can give me reasons for the otherwise i would be happy to hear them this is just what i understand it to work.

mightymouse0x

so drag limited, what do most ppl get top MPH. i got a 90 gxl, but im certain i have a series 4 motor that im currently dropping in. im using S5 everything except for the motor itself. would it be slower the same or faster then the s5 motor (just want to know if the extra hp in the S5 models were motor, or intake designs)

BDoty311

Stock top speed for a S4 n/a is 136mph.

Not alot of power but good aerodynamics.

TakumiJr

In my GXL i hit 135MPH on the tach, but i dont kno what that translate to real speed. I kno that when the speed past 100mph the tach is inaccurate.

spunks

Some from intake and some engine,S5's have higher compression ratio than s4.

mightymouse0x

damn too bad my stock motor had a bad oil seal in the rear rotor. thats why im swappin, but its only temporarily till i get my S5 motor fixed and turboed!! hah yea. so my top speed should be between 135-140mph, atleast thats what the speedometer will read?

Slammedblk7

iTrader: (7)

140mph in my NA, S5 if yall are curious