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View Full Version : How does a stall work???


LETHALxLS1
04-17-2007, 06:08 PM
I have a 98z28 with a a4 trans.My car is stock except for a lid,k and n, and msd wires but I am putting headers/catback on soon. I am going to get my transmission rebuilt in the near future and was wondering about a different stall for my car. Does the stall work by holding the brake in on the car and allowing the rpms to build up and then releasing the brake? If I get a 3000 stall will my car shift into 2nd gear under 3000 rpms when I am driving around town? I am unsure how it would affect my car driving around town. Could you guys explain how this works?? THANKS

juiced99ws6
04-17-2007, 08:36 PM
http://www.fuddleracing.com/WhatConvertersDo.html

http://auto.howstuffworks.com/torque-converter2.htm

these links explain it very well. it has nothing to do with the brake, it acts more like a clutch.

LETHALxLS1
04-17-2007, 08:38 PM
Thank you bud

juiced99ws6
04-18-2007, 10:40 AM
no problem

28Marcos
04-18-2007, 02:17 PM
i want a stall too cuz that deadzone sux.
so a stall will not effect your gas mileage unless you have a heavy foot which would make it seem heavier? lol

juiced99ws6
04-18-2007, 07:59 PM
a stall can effect your gas mileage depending on which one you get. some are looser than others which may make you give the carmore gas to get it moving but others drive just like stock. Just talk to the companys and find one that you like and then post on here and see if anyone has any opinions on that stall. I run a Fuddle Racing converter. 3280 stall and 2.2 STR. I love it and have had no issues with it but I lose maybe 2 mpg in the city when driving normally and nothing on the highway.

Rabbit
04-18-2007, 08:32 PM
Not to hijack the thread but it seems pointless to start another. I am considering getting a stall myself but I am curious if there is any risk of damange to the car with these. All the hard jerking and all. Also say I get a 2800 stall. If I am in rush hour type stop n go traffic does this mean I would have to rev the car to 2800 just to get the wheels turning. My car is essintally a daily driver and I could possibly see that beeing a problem in traffic where ya know you drive up 5 feet then stop and 5 more blah blah or even drive thrus for that matter. Apolgies to deadbydawn once again I don't mean to steal your thread atall. Thanks ahead of time guys!

ATCharming
04-18-2007, 08:40 PM
Not to hijack the thread but it seems pointless to start another. I am considering getting a stall myself but I am curious if there is any risk of damange to the car with these. All the hard jerking and all. Also say I get a 2800 stall. If I am in rush hour type stop n go traffic does this mean I would have to rev the car to 2800 just to get the wheels turning. My car is essintally a daily driver and I could possibly see that beeing a problem in traffic where ya know you drive up 5 feet then stop and 5 more blah blah or even drive thrus for that matter. Apolgies to deadbydawn once again I don't mean to steal your thread atall. Thanks ahead of time guys!

id also like to know the same thing. now im subscribed.

LETHALxLS1
04-18-2007, 10:22 PM
No by all means ask what you want to know.Its cool. If you go to the top of this thread he gave me some links that explain all this and more. Check them out.

astyles
04-19-2007, 12:18 AM
well i learned something today

juiced99ws6
04-19-2007, 09:15 PM
To answer your question above, No you would not have to rev up the car to the rated stall speed just to get the car moving. The car will feel slightly different depending on the converter you get like I explained above and you may have to give it a little more gas than you did before but it will still drive almost like stock, especially with a baby stall like a 2800. When you floor your car then that it when it will flash stall to 2800 rpms and will be just like if you dumped the clutch from that rpm only without any sort of bogging. I hope that answers your question :)

ATCharming
04-19-2007, 09:19 PM
its really hard to imagine all of this without actually seeing/feeling/experiencing it personally. id really like to get a ride in a stalled car just to see what the hell ur all talking about lol

juiced99ws6
04-19-2007, 09:24 PM
being a passenger you wouldnt even be able to tell. just imagine a car with a slipping transmission or a manual car with a slipping clutch. even when the clutch is all the way out and engaged you have to give it more gas to get it to compensate for the slipping. Same effect with a stall converter which is why you need to run a transmission cooler (aftermarket) with it. All that slipping that the converter does causes alot of heat within your tranny

ATCharming
04-20-2007, 10:41 AM
being a passenger you wouldnt even be able to tell. just imagine a car with a slipping transmission or a manual car with a slipping clutch. even when the clutch is all the way out and engaged you have to give it more gas to get it to compensate for the slipping. Same effect with a stall converter which is why you need to run a transmission cooler (aftermarket) with it. All that slipping that the converter does causes alot of heat within your tranny

i also would imagine its kind of a pain in the ass as a DD then?

juiced99ws6
04-21-2007, 12:11 AM
not at all. your car just acts a little differently. after you get used to it then you think other cars are the ones that are wierd lol

Hot Black Trans-Am
04-21-2007, 12:55 AM
With a stall under 3000 it will feel almost stock when driving normal. You will notice it a little more if your starting out on a hill in traffic due to the extra resistance. Just don't go to big for a daily and you'll be fine. Make sure you get a good quality tranny cooler! The Subaru SVX's are stalled around 2800 from the factory. Other smaller motored cars that are supposed to be sporty will have a bit higher than normal factory stall too.

ATCharming
04-21-2007, 09:30 AM
so say ur idling at whatever, about 1k for sake of discussion. u hit the gas about 10% but real quickly. are you not going to feel any torque since ur not up to 3800rpms yet (if thats what ur stalls at) or is ur car jsut not gonna move

juiced99ws6
04-21-2007, 08:51 PM
if you hit the gas pedal quickly it feels almost like a free rev when you do it in my car with how you are describing it. I can leave my car in gear and do that with the gas pedal to rev at people as I go by because the car is expecting to flash stall. However if you just drive the car normally then it feels just about like any other car...

Hot Black Trans-Am
04-22-2007, 03:53 AM
The car almost feels heavier when your normal driving at a low rpm. It is neat to rev at people with an auto while in gear!

ATCharming
04-22-2007, 10:13 AM
if you hit the gas pedal quickly it feels almost like a free rev when you do it in my car with how you are describing it. I can leave my car in gear and do that with the gas pedal to rev at people as I go by because the car is expecting to flash stall. However if you just drive the car normally then it feels just about like any other car...

oh... well i kinda dont think id like that. i like the feeling of quick throttle response

juiced99ws6
04-22-2007, 12:20 PM
I kinda like the feeling of stomping people into the ground ;)

got-a-ls1
04-22-2007, 04:48 PM
Go test drive a trailblazer. My girl bought one (theyre real nice) and it has the 4.2 liter 270hp inline 6. Well tell ya what that fucking thing is stalled from the factory big time. It seems like it almost has a 3000 stall in it. So go find one to test drive then drive your car.. You'll soon see the difference in different stall speeds.

by the way.. A stall does a lot more then just act as a clutch. When the converter is stalled to say 3500 rpms and your sitting at the line waiting to lauch, that converter will double your torque to the ground from the engine while it is stalled. This is why the stall makes auto cars launch so fucking hard when they have traction, not just beucase it gets you into the torque band but it doubles it off the line while its stalled!! When the vehicle speed catches up to the converter speed you lose this advantage but it still helps keep the revs higher through the shifts.

If you had a manual and where lauching at 3500rpms it would get you into the torque band of the engine however only the normal torque of the engine will be produced. A stalled auto > then any 6 speed at the strip.

ATCharming
04-22-2007, 06:37 PM
Go test drive a trailblazer. My girl bought one (theyre real nice) and it has the 4.2 liter 270hp inline 6. Well tell ya what that fucking thing is stalled from the factory big time. It seems like it almost has a 3000 stall in it. So go find one to test drive then drive your car.. You'll soon see the difference in different stall speeds.

by the way.. A stall does a lot more then just act as a clutch. When the converter is stalled to say 3500 rpms and your sitting at the line waiting to lauch, that converter will double your torque to the ground from the engine while it is stalled. This is why the stall makes auto cars launch so fucking hard when they have traction, not just beucase it gets you into the torque band but it doubles it off the line while its stalled!! When the vehicle speed catches up to the converter speed you lose this advantage but it still helps keep the revs higher through the shifts.

If you had a manual and where lauching at 3500rpms it would get you into the torque band of the engine however only the normal torque of the engine will be produced. A stalled auto > then any 6 speed at the strip.

wow that was like the best explanation here! thanks man.

SteveC
04-22-2007, 07:49 PM
I have a 3k stall (2.0 STR) coupled to 3.73 gears, and you will notice more slippage if you have the stock 2.73 or 3.23 gears.

Under aggressive throttle, the 3.73's spool up the rpm's quicker, so you go from farfignugen to fukenmovin quicker. I also believe you get better shift extension with 3.73's because when you come out of the shift, the lower ratio gears set the rpm's higher (500 rpm) over the 3.23's

JMHO

SteveC :)

Rabbit
04-22-2007, 09:07 PM
Hey im curious, how do your all's trannys seem to be holding up? Any chance of damange, not from the extra heat but I mean from dumping so much more power on it at once, just wondering if it can handle it ya know.

ATCharming
04-22-2007, 10:03 PM
Hey im curious, how do your all's trannys seem to be holding up? Any chance of damange, not from the extra heat but I mean from dumping so much more power on it at once, just wondering if it can handle it ya know.

i do know a person that put a 4800 (forgot the exact number, somewhere between 4 and 5k) stall on a dodge intrepid. no reason at all. transmission basically fell out.

juiced99ws6
04-22-2007, 11:32 PM
Hey im curious, how do your all's trannys seem to be holding up? Any chance of damange, not from the extra heat but I mean from dumping so much more power on it at once, just wondering if it can handle it ya know.

it didnt..
meet my new performabuilt transmission :)

http://i125.photobucket.com/albums/p42/juiced99ws6/P1040719.jpg

it was my fault mostly, I knew what I needed but I listened to the dumbass that rebuilt my transmission. I had supplied a transmission cooler when he rebuilt it but he didnt put it in because there was "no room for it" and he said "the factory cooler will be just fine" yeah just fine for 9000 miles..

juiced99ws6
04-22-2007, 11:33 PM
wow that was like the best explanation here! thanks man.

that was in the links i supplied ;)

SteveC
04-23-2007, 05:27 AM
Hey im curious, how do your all's trannys seem to be holding up? Any chance of damange, not from the extra heat but I mean from dumping so much more power on it at once, just wondering if it can handle it ya know.

I have a stock transmission, with a TransGo shift kit (#3 washer) coupled to a Superior race grade 2-4 servo. I had the TM deleted with a dyno tune.

The trick is to keep the trans fluid running cool, I have a 24K B&M transmission cooler with a B&M 3 Qt deeper pan. The stock Camaro setup, the transmission temperature is around 180F, with my setup on the freeway, I run anywhere from 115-135F, in town on a hot day 165F. I live in a very warm climate in southern california.

I have had this setup with my 3K stall and 3.73 rearend gears for over 2 years, with absolutly no problems whatsoever.

SteveC :)

SteveC
04-23-2007, 05:39 AM
it didnt..
meet my new performabuilt transmission :)

http://i125.photobucket.com/albums/p42/juiced99ws6/P1040719.jpg

it was my fault mostly, I knew what I needed but I listened to the dumbass that rebuilt my transmission. I had supplied a transmission cooler when he rebuilt it but he didnt put it in because there was "no room for it" and he said "the factory cooler will be just fine" yeah just fine for 9000 miles..

I mounted my cooler "dope style" behind the front passenger side turn signal to the left of the black air dam (when you are looking at the nose of the vehicle). There are 2 holes in the air dam (not visable) where the shop ran the braided hoses.

SteveC :)

juiced99ws6
04-23-2007, 07:06 AM
yeah I have my car all apart right now and dont see mounting the cooler to be much of an issue

01Z28M6
04-23-2007, 09:06 AM
I'm on 5 or 6 forums and this is the best thread I have found for explaining stalled autos. I hope the moderator / administrator considers making this thread permanent. Good job!