GenXBooster

hello pepz, i just got an auto rx7 and really want to know how fast can the rx7 can go in a 1/4 mile. i haven't try to car out on 1/4 mile, but if anyone can... drop me the "DIGITS" well be very appreciated.

ObliqueFD

iTrader: (32)

Stock it is apx. 14.0 seconds.

Elegant Black Monster

Low 14's in stock form. Intake and full straight pipe exhaust really make a difference.

fastcarfreak

slow, your gonna wanna do a manual swap before you know it!

ZeroBanger

an auto 3rd gen runs a best bout 14.4 to 14.5, vs a 5 speed best of 13.5-13.7 (high 13's more typical).

Elegant Black Monster

Yeah what Zerobanger and fastcarfreak said. With the new economy cars breaking into the 14's like the Accord and such you're definetely going to want a 5 speed.

RX794

If you guys are using a GM tranny can you tell me how you made it work, cause I wanna do the same conversion on a FD with a TH350, I called ATI, and that adapter plate that they show on their website:
http://www.atiperformanceproducts.co...pterk/akit.htm (scroll down to where it says import engines, part#915221) doesn't exist, I called them up and they said that it's not going into production, and they mean to take it off of the website, but just haven't gotten around to it, so the only alternative I found was FB transmissions, they have a way to make it work, BUT it's not cost effective, and also requires a custom torque converter due to the use of an adapter ring, lemme know if you guys have any other way available, thanks.

weaklink

*****! well looks like 5 speed swap is only way...

GenXBooster

yoo pepz, i really wanna know how high will a bone stock, auto tranny rx7, how high does the RPM go til it bounce? oHH yea, and very important to know, how do i RACE an auto too?
i heard that some pepz says: step on brake and acceleration together, advise on that please, and what's the best way to use the HOLD when racing..

|aFk| LiMiTz

thats called brake boosting......manual swap!

djantlive

stock 5 spd is 13.5, auto is 14.0. 5 spd performance varies due to driver skill. auto performance is more consistent but I think you'll have to brake and gas at the same time to get 14.0. If you just do a regular launch, it's around 14.5.

economy car doesn't do 14. altima with 240 hp is in the low 15s as most new sedans like accord. accord is no longer an economy anyways.

Jasooner

Don't power brake, unless you wanna be replacing your transmission soon.

weaklink

yeah what jasooner said. p.s. sweet avatar-the cream rises to the top!

GoodfellaFD3S

iTrader: (213)

Do you really talk like that, or just type like it

oh, and low to mid 14 seconds.

Elegant Black Monster

Well if you're going to race it you may as well power brake and destroy the tranny. It will take quite a while power braking to destroy the AT tranny from what I've seen. And I assume that if you're asking how to launch the car then you have no qualms over spending a little cash(about 2-3K) later to convert to 5-speed.

This is a copy-paste from one of Jonski's posts about launching an AT in the Kills section.

Launching in an AT FD isn't as easy as many think. As stupid as this may sound, launching the AT FD takes practice and know-how.

Here's how it's done:
- Press hold and select 'L'.
- Brake torque to 2500rpm.
- Release gas, but don't depress the accelerator any further.
- At 3000rpm, GRADUALLY depress the accelerator.
- At 5000rpm, you should be at full open throttle
- When you hear the buzzer, select the next gear

This is THE fastest way to launch the AT FD.

This is how I launch the car and it does wonders. If you try to just mash on the accelerator the car just bogs. I'm guessing its because the WOT map and the idle map are very rich to keep your motor from blowing up.

Note: You may end up spinning the tires by holding the brake and your ABS will get in the way. I suggest you remove the ABS fuse at the track. Also if your tires are a little wet your RPMs will keep going past the torque converter stall speed. Try to keep the RPMs below 3k if thats the case.

turbojeff

iTrader: (30)

Where do people come up with these BS numbers? A typical stock FD will not run mid 13s. Didn't happen when they were new and it doesn't happen now. Everyone quotes the absolute fastest time they ever read without seeing pretty much no one else can make it happen.

Stock 5spd is typically 13.7-14.2.

Stock auto is MID 14s. No stock auto will run a 14.0.

What does the Suby Forester run the 1/4 in? I know with the turbo motor it does 0=60 in 5.3 sec.

Jasooner

I drive an auto. Simple fact of the matter is, if you were planning on racing your car, you shouldn't have gotten an AT. Scratch that, I mean more specifically, drag racing. IMO regardless of how much punishment the transmission can take, power braking is obviously hard on all drivetrain components and that's not worth it for the extra .5 sec. Just make more power to compensate for it.

rx7twin93

I have been searching for an ECU for my automatic RX7. Three inch exhaust all the way through and M2 cold air intake. Been waiting to put in the large M2 intercooler but can't find a programable ECU. Has anyone heard or seen anything? What are you automatic guys doing for management?

Elegant Black Monster

A Pettit ECU works fine and one guy on here got a Haltech to work with the Hold feature. I think he did a parallel ECU system with a stock ECU where basicly the stock ECU just looks at boost and the tranny.

weaklink

It won't take long at all. My AT broke within 2 hours of installing a PFC, without brake torquing.

I think that should read "Release BRAKE, but don't depress the accelerator..."

Good advice on removing the ABS fuse if you are going to do it.

Best advice IMO is to get a hurst roll control or some other sort of line lock/antiroll.

weaklink

That was viper jr...

maxpesce

AEM's ecu is suposed to be compatable w/ the AT

also the ApeXi PFC can be run Piggyback w/ the stock ecu to matine compatability w/ the AT - iirc SPAutos is running this setup on his Auto FD

Resource

I ran a 13.4 @ 102 in my 93 bone stock 5 speed touring RX7.

cartervs

As I remember Chuck H ( Rotary Extreme) ran in 12 second area. However, he had the Level 10 auto trans and convertor upgrade, along with engine/mgt/fuel upgrades as well.....The (ossibly) bang for the buck may well be 4:30 rear end gears..30% gain in torque...(3:90 to 4:33) allowing much faster accelleration.....Yes.. you do lose top end speed...I have run 158-160 MPH on the top end, however I do tend to drive more 0-100 's that Banzi top end runs....Ummm.....Carter

Elegant Black Monster

Weaklink, what kind of mods did you have when your AT started slipping?

With just intake and full straight pipe exhaust the tranny should have been fine. However once you start going into upgraded turbos and fuel and such then you may as well go all the way and go 5 speed.