Torque Converter Mod
Thread Starter
Racer
Joined: Feb 2006
Posts: 349
Likes: 0
Torque Converter Mod
I am wanting to add HP to my 03 A4 car and have had several recomendations to add a torque Converter but I do not understand the difference in the various models 2400, 2600, 2800, 3000 or 3500 stall . I am not sure what the torque converter will do, what impact it will have, and what advantage does each of these variations provide.
I am also wanting to update my Differential 3.15 to 3.73 or 3.9 if anyone has any information on which combination in both mods that would be best I could use the info.
Thanks
Randy
I am also wanting to update my Differential 3.15 to 3.73 or 3.9 if anyone has any information on which combination in both mods that would be best I could use the info.
Thanks
Randy
Thread Starter
Racer
Joined: Feb 2006
Posts: 349
Likes: 0
I am going to begin autocrossing and just driving on the weekends. I would also like to drag race the car at least once to see what that would be like. I love competing in sports and this is my first try at competing in a sport with a car.
The car will not be a daily driver but I do want to drive the car on the street.
Thanks for responding
Randy
The car will not be a daily driver but I do want to drive the car on the street.
Thanks for responding
Randy
Drifting
Joined: Dec 2004
Posts: 1,937
Likes: 1
From: Tempe Az
Originally Posted by rjung
I am going to begin autocrossing and just driving on the weekends. I would also like to drag race the car at least once to see what that would be like. I love competing in sports and this is my first try at competing in a sport with a car.
The car will not be a daily driver but I do want to drive the car on the street.
Thanks for responding
Randy
The car will not be a daily driver but I do want to drive the car on the street.
Thanks for responding
Randy
Thread Starter
Racer
Joined: Feb 2006
Posts: 349
Likes: 0
Installing just the 3000 Stall will give my car greater acceleration than it has currently? I am pulling 310 HP on the Dyno currently which seems low to me and I think is caused by having the A4 Auto Trans.
Drifting
Joined: Dec 2004
Posts: 1,937
Likes: 1
From: Tempe Az
Originally Posted by rjung
Installing just the 3000 Stall will give my car greater acceleration than it has currently? I am pulling 310 HP on the Dyno currently which seems low to me and I think is caused by having the A4 Auto Trans.
I went from a 13.3 to a 12.5 after just installing a 3000 stall and DR's with stock 2.73 gears.
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Safety Car
Joined: Jul 2002
Posts: 3,874
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From: Fishing Somewhere Cold
St. Jude Donor '11-'12-'13, '15
Le Mans Master
Joined: Jan 2000
Posts: 6,725
Likes: 0
From: South Bend IN
To answer some of your questions. The difference in stall speeds is like dumping the clutch at 2800, 3000, 3200, etc. It allows the engine to rev up before moving the car which allows you take off harder with the different stall speeds. For instance, in pure drag race cars a 5500 stall is typically used to accelerate the fastest from a dead stop. Your stock convertor is built to lockup around 1800 rpm so as you can see you would add roughly 1000 rpm to your take off engine speed under full throttle. This is just a rough explanation as traction, brake holding ability, etc. all come into play.
Le Mans Master
Joined: Feb 2004
Posts: 8,629
Likes: 16
From: York PA
It doesn't add HP. It's like riding the clutch till you get to The RPM of the Stall Convertor you choose. Then it locks in like a clutch would. So under normal daily driving the car felts (loose) which means it like riding the clutch constently. The lower rear gear ratio you choose the less the car will feel loose because it will get to the lock in Rpm quicker & will have more pulling torque while the convertor is slipping. If you are going to race at the track you would want a lower TC and at the Strip a higher TC. For the street and the strip I like 3:42 & Yank ss3600
You should find someone close to you and go for a ride, alot of guys buy the wrong TC's
You should find someone close to you and go for a ride, alot of guys buy the wrong TC's
Last edited by 4DRUSH; Mar 4, 2006 at 11:05 AM.
Thread Starter
Racer
Joined: Feb 2006
Posts: 349
Likes: 0
I want to thank everyone for there help the information was great. Based on this information I think I am going to go with the 3.73 Differential and the 3000 Stall TC. How does this combination sound.
My main reason for adding these mods is autocross so if anyone has a better combination of mods to get my car to perform better I am all ears. This is a pricy investment that I want to make sure performs for me on the track and on the street.
Randy
My main reason for adding these mods is autocross so if anyone has a better combination of mods to get my car to perform better I am all ears. This is a pricy investment that I want to make sure performs for me on the track and on the street.
Randy
Drifting
Joined: Dec 2004
Posts: 1,937
Likes: 1
From: Tempe Az
Originally Posted by rjung
I want to thank everyone for there help the information was great. Based on this information I think I am going to go with the 3.73 Differential and the 3000 Stall TC. How does this combination sound.
My main reason for adding these mods is autocross so if anyone has a better combination of mods to get my car to perform better I am all ears. This is a pricy investment that I want to make sure performs for me on the track and on the street.
Randy
My main reason for adding these mods is autocross so if anyone has a better combination of mods to get my car to perform better I am all ears. This is a pricy investment that I want to make sure performs for me on the track and on the street.
Randy
Sounds like a good combo. Your gas mileage is going to be **** tho.
Race Director
Joined: Aug 1999
Posts: 15,466
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From: GARDENA Ca, State Of Konfusion
St. Jude Donor '05
Le Mans Master
Joined: Aug 2000
Posts: 5,294
Likes: 2
From: Suffolk, Long Island NY
Originally Posted by BlownV6
Sounds like a good combo. Your gas mileage is going to be **** tho.
Do you have any experience with such combos?
His fuel economy should only drop a few mpg, far from ****.
Thread Starter
Racer
Joined: Feb 2006
Posts: 349
Likes: 0
I am looking at the DTE Stage II 3.73 Differential and the YANK SUPER STOCK 3200. Does anyone have any comments about these manufactures or any suggestions that would be better. Also will this combination reduce my upper end performance. If it matters my car currently has the factory 3.15 Differential.
Again I am wanting to Autocross and street drive my A4 03. Do these MODS and products fit this application? In everthing I have read it is important to match my MODS with me direction for the car.
All of you are so knowledgable and helpful thanks again as I am just getting started and learning without this forum's members I would be lost.
Randy
Again I am wanting to Autocross and street drive my A4 03. Do these MODS and products fit this application? In everthing I have read it is important to match my MODS with me direction for the car.
All of you are so knowledgable and helpful thanks again as I am just getting started and learning without this forum's members I would be lost.
Randy
Safety Car
Joined: Aug 2000
Posts: 4,154
Likes: 1
From: Murphy TX
Cruise-In II Veteran
Originally Posted by rjung
I am looking at the DTE Stage II 3.73 Differential and the YANK SUPER STOCK 3200. Does anyone have any comments about these manufactures or any suggestions that would be better. Also will this combination reduce my upper end performance. If it matters my car currently has the factory 3.15 Differential.
Again I am wanting to Autocross and street drive my A4 03. Do these MODS and products fit this application? In everthing I have read it is important to match my MODS with me direction for the car.
All of you are so knowledgable and helpful thanks again as I am just getting started and learning without this forum's members I would be lost.
Randy
Again I am wanting to Autocross and street drive my A4 03. Do these MODS and products fit this application? In everthing I have read it is important to match my MODS with me direction for the car.
All of you are so knowledgable and helpful thanks again as I am just getting started and learning without this forum's members I would be lost.
Randy
