malman_16

Heres my question,
I can spin the tires in first gear real easy, but when I take off i have a slow acceleration until i get to third gear.....then it accelerates pretty fast. Why isnt First and Second gear slamming me back in the seats?

GavinJuice

I experience that same thing also. Not MUCH power until 3rd gear which is where i feel it. Also my clutch is shot so i dunno what it should feel like.

g prime

What are your shift points?

malman_16

Shift Points......You mean RPM's?

cdrad51

yeah at how many rpms do you shift?

malman_16

I'll Have to check......but i do know its when its revved up real high.......i use my ear and listen to the engine and then shift

BigJim

Also, what type of engine do u have.

cdrad51

ok so at how many?

g prime

Hello?.... Did this thread die already?

Wankeled

I guess I have a similar problem as well, especially when I'm in first...but I figured that it was because my RX7 is stock....100hp, and I usually shift at 5,000 rpm for every gear.

Captain Lou

the question you need to ask is

what can be causing power loss in a stock set up?

since its most likely a tuning issue

hiboost7

well your problem is that its a first gen 12a....everyone has the same problem....i couldnt win a race untill third when it really used to accelerate. prob gears make it slow off the line

Wankeled

Malman hadn't responded and I was really impatient to hear g prime's response, so I hoped that my post might get things rolling....I know my stock is supposed to be slow in 1st!

I'll wait...

FB II

the 12a motor pretty much needs the short gears though, dont ya think?? if it had long gears then it would be even slower probably!

Wankelguy

1st gear is pretty much an excuse to get into second.
There is nothing to be gained by over-revving in 1st gear, better to shift around 4K so that when you get in 2nd you are ready to punch in the secondaries. My old RX4 used to do 60mph in 2nd gear, but my '80 won't pull that off.

g prime

I your car unusually slow, have driven others and noticed and difference. Shifting a 4K is like normal driving and wouldn't expect much out of that. I don't even think you get much of a powerband until 4.5K or 5K. If it is unusally slow clean the carb, replace air and fuel filter. Is your car stock?
Hope this is more helpful then my last post.

MicahMan

i have an 83 gsl and i have a power loss also. i had awsome 1st 2nd 3rd gear power then last week i lost it. i dont know what happened. now at the end of third i can get a little power.

christaylor

"No power until 3rd gear?"

Welcome to the wonderful of rotaries. I've never been in an RX-7, even race prepared, that had any power until 3rd gear. Let's face it, rotaries aren't known for their mAdDD TorKue!11 or mAdDD hOaRzePowa!!11one. It's just a fact of life.

Wankelguy

Your vacuum secondaries aren't seeing as much vacuum in 1st and 2nd gears as in third when there is a higher load on the engine.

Rotofire

i have a weber 45 dcoe, and my power dosen't come until like third gear, but then she sputters cuz my fuel pump sucks.


*i shift at around 35oo on everyday driving, can i go higher?*

oh and maybe you guys are running to rich and when you get to third gear the bowls run a little lower and your mixture leans out to where it's supposed to be.....just a thought, but i'm a newb. don't even know if that's possible I'm just trying to sound like i know what i'm talking about