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Old 04-20-2012, 11:09 AM   #1
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stall question

I get my car back today, they are putting a 2100 stall in it and idk nothing bout stalls, so is there any dos or dont's with it?? Will driving it be different? Anyone have any experience with a stall that size??
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Old 04-20-2012, 11:22 AM   #2
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Someone correct me if I'm wrong.
Okay when you hold your foot on the brake HARD and push on the gas the car won't actually move until a certain rpm, at this point the wheels are breaking loose, the stall or torque converter is set to an rpm and the when so much pressure builds in it from fluids pressing plates and what not in it, the back tires break loose,
It's meant for better launches in autos, since standards can control the rpm they launch at an auto cannot because the back tired will break loose right around the stall area, so when launching(if u drag) as I've read you'll want to get it just under the stall limit(2100) and launch from there.
That's what I've picked up from the research I have done, they aren't even to explain, that's the best I could do
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Old 04-20-2012, 11:30 AM   #3
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I was told by a friends father that the stall rpm is the rpm that your mottor flashes to when you go WOT. Stock would be like 1500-1800 so by putting in a 2100 stall you start further in the powerband.

Now someone please double check this haha
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Old 04-20-2012, 11:33 AM   #4
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Quote:
Originally Posted by Redsteel
I was told by a friends father that the stall rpm is the rpm that your mottor flashes to when you go WOT. Stock would be like 1500-1800 so by putting in a 2100 stall you start further in the powerband.

Now someone please double check this haha
What do u mean by flashes to?
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Old 04-20-2012, 12:17 PM   #5
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Re: stall question

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Originally Posted by mystang50 View Post
I get my car back today, they are putting a 2100 stall in it and idk nothing bout stalls, so is there any dos or dont's with it?? Will driving it be different? Anyone have any experience with a stall that size??
You probably won't notice a huge difference.
I would also add a trans cooler to the outlet side of the radiator trans cooler to help remove any additional heat.


When you hold the brakes and slowly increase the RPMs and note at what RPM the back tires start to break loose, that will give you an idea of the actual stall speed the converter is operating at.
Flashing the converter just means flooring the accelerator from idle and the RPM's will "flash" up to the converter stall speed quickly, somewhat akin to dropping a clutch. Note the RPM that the car begins to move or the tires begin to spin and that will give you an idea of its stall speed too.
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Old 04-20-2012, 12:18 PM   #6
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So what I said was about right?
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Old 04-20-2012, 12:24 PM   #7
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Re: stall question

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So what I said was about right?
Pretty much, but the fluid isn't "pressing plates", it is driving the converter through the pressure on the turbine fins inside it.
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Old 04-20-2012, 12:45 PM   #8
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All
I knew is there was some sort of pressure
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Old 04-25-2012, 08:50 PM   #9
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I'm also semi new to stalls I have a 10" billet 3600 stall with anti ballooning plates. When on the foot brake it only stalls out to 2400 before breaking the tires loose.. Don't ask me why.. But from a flat out punch it yanks really hard like dumping a clutch..
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Old 04-25-2012, 10:23 PM   #10
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Re: stall question

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I'm also semi new to stalls I have a 10" billet 3600 stall with anti ballooning plates. When on the foot brake it only stalls out to 2400 before breaking the tires loose.. Don't ask me why.. But from a flat out punch it yanks really hard like dumping a clutch..
What RPM does it lock up at when you flash it like that?


The actual stall speed can vary quite a bit from advertised as it depends upon how much torque you are putting to the converter. The more torque you have the higher it will stall.
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Old 04-26-2012, 12:18 AM   #11
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Quote:
Originally Posted by Trojan Horse

What RPM does it lock up at when you flash it like that?

The actual stall speed can vary quite a bit from advertised as it depends upon how much torque you are putting to the converter. The more torque you have the higher it will stall.
Man, reading all this makes me so anxious!! I was supposed to get my stang back last Friday but no no no, I don't get her back till this Friday...bs!! It's been 4 week since I drove her, can't wait!!
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Old 04-26-2012, 07:10 AM   #12
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I'm really not sure it's hard to watch the stock tach an drive this monster.. But prob about 3200 from a flat punch.. Keeps me perfectly in my power band
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Old 04-26-2012, 08:03 PM   #13
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Re: stall question

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I'm really not sure it's hard to watch the stock tach an drive this monster.. But prob about 3200 from a flat punch.. Keeps me perfectly in my power band
Strange that there would be that much difference.
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Old 04-26-2012, 09:22 PM   #14
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Why you say that? I'm not positive like I said I'm pretty new to stall converters.. But it flashes early and the car will try to push it self at about 2500 then it fully locks up and spins the tires around 3200.. The converter is a 3600 but I don't have paperwork on that to confirm.. But he had several other documents on many of the mods..
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Old 04-26-2012, 10:38 PM   #15
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Re: stall question

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Why you say that? I'm not positive like I said I'm pretty new to stall converters.. But it flashes early and the car will try to push it self at about 2500 then it fully locks up and spins the tires around 3200.. The converter is a 3600 but I don't have paperwork on that to confirm.. But he had several other documents on many of the mods..
I'm just surprised that the spread between the two test procedures is is like 800 RPM's apart.
Every time I have tested one using those two procedures in the past they were within 200-300 RPM difference at the most.


At first you said: "When on the foot brake it only stalls out to 2400 before breaking the tires loose."
Then you said: "But prob about 3200 from a flat punch."


With an advertised stall speed of 3600 RPM, I figured both procedures would be close the the 3600 like your flash test of 3200 RPM.


No big deal, there are many variables that could be affecting the outcome.
What matters is how well it works for your combination.
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Old 04-27-2012, 06:10 AM   #16
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Could be I will make a video later to see... Now I'm curious.. But yes it works for my setup great
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Old 04-27-2012, 06:19 AM   #17
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Re: stall question

For those interested Rod and Custom magazine has an article explaining torque converters here: Understanding Torque Converters - Rod and Custom Magazine
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