Question -

When your on the highway cruisin around 55-60 mph what gear are you in?

I have an FC3C. @ 60mph 3rd gear is 4700rpm and 4th gear is 3500rpm. Redline is 8k

i normally keep it in 4th.

I'd like some other opionions...

 

5th gear--- overdrive. That's what 5th gear is for.

Why is this even a question? Wouldn't, "Who likes to waste gas?" be more suited?

 

Lower RPM = Better gas milage

 

Well, i know that... but 3500 rpm isn't that high and 5th gear is like 2700..

I was just wondering... Some people here say they redline every gear too... isnt that wasting gas??

 

Yes, and wearing the engine needlessly.

 

ok, if I'm on the highway, I'm in 5th gear, but I'm not doing 55-60!

whenever I am at 55-60, I'm usually in 4th, but not cruising so to speak.

 

for gas saving... i usually shift lower than your 2700... just for gas purposes

 

2nd gear.

 

that's what I'm talkin about

 

Its always cruisin with the top down...

I sometimes go in 5th, but then when i want to pass shifting to third or second isnt really good for the car is it now?

 

2nd gear at 6999rpm just before the buzzer and around 60 mph :-p





















5th gear is my cruise gear.

 

I don't know about the "lower RPM saves gas" statement- I (and I've seen others say the same thing) get better gas mileage at 75-80 mph than I do at 55-60...Luckily I have the opportunity every day to do 75-80 for 35 miles or so on an interstate (unless it's raining)on the way to work, so I've verified this numerous times...BTW, that's 3500 to 3800 RPM's in 5th, I couldn't imagine doing it in 4th

 

Well, the FC3C has a higher redline than the FC3S, so you have to take that into account also..

87Rx7guy...

 

vert has higher redline than regular? uh no...all 89-91 5spd N/As have 8k redline, while every other 2nd gen rx7 has 7k

 

as long as you shift smoothyl, revmatching and all that... I don't see how it could be a problem at all. I skip gears all the time. just make sure your engine knows what you're about to do it

 

god that is funny lmfao.

 

I would probably be in fourth around 55-60.
Third if I wanted to have some fun.

 

oh, my bad...

 

The buzzer goes off around 6800

I have been in my car for 5 years so shifting is not a conscious thing to me anymore. I don't cruise in 3rd any faster than 30mph, 4th no faster than 45. For being a streetport I have pretty good low end so I can keep it under 2500 and be ok.

 

double

 

the reason you get better gas at higher speeds in the rx is becuase that is where the torque and horse power meet, and if you dyno your car you would find out that the rpm that it occurs is roughly what rpms you cruising at, and fith gear is what i stay in when cruising down the intersate, gas to expensive here

rat

 

the reason you get better gas at higher speeds in the rx is becuase that is where the torque and horse power meet, and if you dyno your car you would find out that the rpm that it occurs is roughly what rpms you cruising at, and fith gear is what i stay in when cruising down the intersate, gas to expensive here

rat

 

i crusie in 4th at about 70-80 in my vert, about 5k(i think). I like the sound and the power it has right there i don't really care about gas, i only put it in fith when the gas light is on or my girlfriend is in the car and i want to hear her talk. The vert will do 90 in 3rd though(thats about 9.5k)

 

torque and horsepower meet at 5250 rpms, on every gasoline internal combustion engine built by man, according to something I read a long time ago by a guy a lot smarter than me who proved this through mathematics...I think the reason has to do with the dynamics of the engine itself- the rotors are basically acting like a flywheel (they don't have to change directions like a piston)...simple physics dictates that the more momentum a flywheel- type object has, the more inherent energy it has...that, and the aerodynamics of the body don't produce appreciable increases in drag with moderate speed increases on the freeway, until what, maybe 90-95 mph?

 

I noticed theres no change in gas milage when I shift at 2.5K and when I shift at 3.8K. Its all in the speed you accelerate at.

I cruze on the highway at 60-80 depending, in 5th gear.