A/T level ten upgrade
 

Hi I've wondering if anyone ever tried this upgrade on their Rx 8 and what have been the outcome as far as gain , I remember one members that installed the level ten trany but we never got an update

I believe I am the only one with the Level Ten Performance Transmission.
https://www.rx8club.com/series-i-specific-performance-mods-97/level-ten-build-sheet-189184/

What else do you want to know?

Well as far as performance , I notice you had quite a few upgrades on the tranny , have you been able to compare to a MT. As far as stalls etc... Of course we all would love to launch harder at higher rpm

Yes, if you clicked on the thread I have posted it lists everything Level Ten did. I have not been able to compare it to an MT. MT will still kick my ass since I have the lower powerd 4 port. I like they way the car drives with the upgraded tranny and converter. A 6 port auto with an upgraded transmission I think would give the MT a run for its money.

Lower powered 4 port ?

Lower powered compare to the 6 port.

Do you really feel that the 4port is that under powered, ? Here in St.maarten there's only 3 Rx8 two Mt and my only auto. And i get nail to the seat of that baby every time I shift. Always drive in m

Yes, ask anyone on the rx8club and they will tell you the same.

What year is your RX8?

It's a 2004.GT. Silver

invasion08 now that you guys are discussing this info... do you know what's the OEM TC stall rate on the 4 speed autos? appreciate it , thanks

The stock stall rpm for 4spd AT is around 2200rpm

The stall speed is between 2,400-2,900 on the stock transmission. My new stall speed is 500 above that.

What year is yours Invasion? If you were getting that on stock equipment that's impressive and would like to know how you did that, there have been countless people I know that can't go above the 22-2300 rpm range and all those people have the 4spd tranny. Mine will barely go above 2200.

I would like to hear from other 4spd owners out there on this and see reports of stall speeds.

For people out there that don't know how to check the stall rate here's how-

Put the car in Drive, keep foot on the brake, press the gas while not releasing the brake, note the max rpm you reach while at a stop. That is your stall rate.

Can anyone out there with stock 4spd tranny and torque converter stall above 2300? Let us know!

I obtained this infomation off of this website, http://foxed.ca/rx7manual/2003mazdarx8/.

TRANSMISSION/TRANSAXLE TECHNICAL DATA
Automatic transmission type RC4A-EL

Engine stall speed (rpm) D, M range 2,400-2,900


You have to keep in mind that the tachometer is not accurate. When I was doing the Cobb AP datalogs for MazdaManiac the tach read 4200rpms what the Cobb AP was reading around 3900-4000rpms.

Thanks for the link Invasion I'm checking it out now. So here's another question, and I'm not trying to sound rude or mean I just want to learn more about the car.

If the tach is off like you say and the Cobb is truly correct then wouldn't the stall really be more like 2000 if the tach reads 22-2300?
Your data seems to imply that the Cobb reads 2-300 rpm less than what the tach shows is that right?
If the tach was reading 2-300 less than the real thing then the 2400 rpm stall sounds about right?

Yes, the tachometer is off alittle bit. The reason being the tachometer is designed to sweep the rpms smoothly. Do you understand what I am trying to explain? They did not want a tach to move erratically.

Yeah I get that it needs to be smooth.
Isn't a stall rate a set rpm though? Why would they say the stall is 2400-2900? I was under the impression the layout of the internal fins of the torque converter determines the stall rate. Since the fins don't move (that I know of) how could you have an adjustable stall like that? It should be a set rpm not a range? A range of stall rates to me would indicate different torque converter models that could reach anywhere within that range.

That question is beyond my knowledge. So I did a search and found a great website that describes the question you are asking. http://www.bankspower.com/techarticl...ng-Stall-Speed

Imagine you have two fans facing each other. Turn one fan on, and it will blow air over the blades of the second fan, causing it to spin. But if you hold the second fan still, the first fan will keep right on spinning.

That's exactly how a torque converter works. One "fan," called the impeller, is connected to the engine (together with the front cover, it forms the outer shell of the converter). The other fan, the turbine, is connected to the transmission input shaft. Unless the transmission is in neutral or park, any motion of the turbine will move the vehicle.

http://www.bankspower.com/techarticl...que-Converters

D setting not manual. Stall speed 2000rpm 2005 4 port. Good compression, everything ok.

WTF do you care about stall speed for? This car was not build for the 1/4 mile race. If you will just FI your 4 port a/t you will find that few HP that was missing from the 4 port to the 6 port and a whole lot more. You will also find that your stock tranny is more than sufficient for use as the car was designed. Come to WHiV4 this year and see /sc a/ts and turboed a/ts and you will say screw stall speed. Now if you insist upon doing what this car was not intended for then by all means worry about stall speed.

Thanks again for those link Invasion, good info there I read it all.

Thanks mperformance for checking your numbers, hopefully we can see others post their info here too.

This may come off mean but here goes- We're trying to get everything we can out of our cars, that's a statement I think you are very familiar with. And honestly FI is just way too expensive for most people. Consider how much you have spent on your car, now do you think the majority of RX owners have that to spend? We aren't trying to use the car for something it's not meant for, any car with the proper mods will do what you want. Maybe we're just looking for a different end result than you are? If the AT is to have any sort of dead stop launch ability the torque converter and stall rate need to be addressed. Even with the TC changed it still won't be a drag strip king and I think we all know that. It's just another one of those mods that will give a slight performance increase if the buyer is willing to justify the cost. We all know how little the intake's provide but seems like we all have them right? My .02 cents