More Torque Converter Questions
Thread Starter
Safety Car
Joined: Dec 2000
Posts: 4,329
Likes: 10
From: Cape Coral fl
More Torque Converter Questions
How do you properly launch with a torque converter? I was told by one person that I should hold the brake and rev my motor to just before the tires spin, and on the last yellow, jump off the brake and mat it. My other friend told me I should hold the brake, rev to about 1500 rpm, and on the last yellow jump off the brake and mat it. I have a BTE 3000 stall converter for my car. I was told it should flash to 3500. My friend who said to keep the revs down, said I would defeat the purpose of the stall speed if I rev it up against the brake. Is he right?
Thanks in advance,
Tony :confused:
Thanks in advance,
Tony :confused:
Le Mans Master
Joined: Feb 1999
Posts: 6,172
Likes: 11
From: somers, ny
Re: More Torque Converter Questions (KLLRVET)
i have tried both methods and the only difference i noticed was that it was harder to stage & hook when rev'd to brake stall. Now i usually rev it to just around 1300, and can stay on the converter all day.
try it both ways yourself. Your car might like something different.
try it both ways yourself. Your car might like something different.
Thread Starter
Safety Car
Joined: Dec 2000
Posts: 4,329
Likes: 10
From: Cape Coral fl
Re: More Torque Converter Questions (Red96Coupe)
Okay, so hold the RPM's just above idle, and mat it on the last yellow. One more question, is that harder on the driveline than loading the converter against the brake? The reason I am asking, is that I had a six speed in my car, and destroyed the rear end launching. I hoped that the auto would at the very least extend the lenghth of time between breakage, because having the driveline "loaded" would not hit so hard.
Tony
Tony
Le Mans Master
Joined: Oct 2000
Posts: 5,086
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From: Northern tip of Virginia
Re: More Torque Converter Questions (KLLRVET)
what these guys are doing...going to 1200 or so, is to take the slack out of the drive train.
You DO want the "slack" out, so as not to shock the drive train.
this SHOULD be your best bet... if you have wimpy gears, like 2.59... :lol: , you might wann rev it a little more.
remember..... tire spin is NOT what you are after
You DO want the "slack" out, so as not to shock the drive train.
this SHOULD be your best bet... if you have wimpy gears, like 2.59... :lol: , you might wann rev it a little more.
remember..... tire spin is NOT what you are after
Team Owner
Joined: Nov 1999
Posts: 32,782
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From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey
Cruise-In VI Veteran
Cruise-In VII Veteran
Re: More Torque Converter Questions (KLLRVET)
I've always come out at a dead idle.
NO perload. I want all the shock I can get. :blueangel:
NO perload. I want all the shock I can get. :blueangel:
Thread Starter
Safety Car
Joined: Dec 2000
Posts: 4,329
Likes: 10
From: Cape Coral fl
Re: More Torque Converter Questions (mackeyred96)
Mackey,
You ever break anything in the rear launching like that? I used to have 4.09's and launched 3000-3500 rom. I broke the left side spindle, left bearing assembly, the main bearing caps in the diff., and seven teeth off of the ring gear. I understand that as long as I run a Dana 44 I will experience this, I just wanted keep it from happening as often. By the way , I am going to use my old 3.45's with this new automatic setup.
Thanks,
Tony
You ever break anything in the rear launching like that? I used to have 4.09's and launched 3000-3500 rom. I broke the left side spindle, left bearing assembly, the main bearing caps in the diff., and seven teeth off of the ring gear. I understand that as long as I run a Dana 44 I will experience this, I just wanted keep it from happening as often. By the way , I am going to use my old 3.45's with this new automatic setup.
Thanks,
Tony
Team Owner
Joined: Oct 2000
Posts: 32,657
Likes: 1
From: I need a 4 door C6 Z06
CI 2-3-4-5-6-8-9 Veteran
St. Jude Donor '05-'06-'07-'08
Re: More Torque Converter Questions (KLLRVET)
Tony, did you get the swap done yet???? I havent seen your car in front of your house in a while......
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Team Owner
Joined: Nov 1999
Posts: 32,782
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From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey
Cruise-In VI Veteran
Cruise-In VII Veteran
Re: More Torque Converter Questions (KLLRVET)
Mackey,
You ever break anything in the rear launching like that? I used to have 4.09's and launched 3000-3500 rom. I broke the left side spindle, left bearing assembly, the main bearing caps in the diff., and seven teeth off of the ring gear. I understand that as long as I run a Dana 44 I will experience this, I just wanted keep it from happening as often. By the way , I am going to use my old 3.45's with this new automatic setup.
Thanks,
Tony
You ever break anything in the rear launching like that? I used to have 4.09's and launched 3000-3500 rom. I broke the left side spindle, left bearing assembly, the main bearing caps in the diff., and seven teeth off of the ring gear. I understand that as long as I run a Dana 44 I will experience this, I just wanted keep it from happening as often. By the way , I am going to use my old 3.45's with this new automatic setup.
Thanks,
Tony
I have found that this works best for me. My new set up does idle at 1000 rpm so it a little easer on parts but flash will get you 60'.
Why are you going to 3.45? I've found that the 4.09 and 28" tires work great with an A4. I MAY GO TO 4.27 SOME DAY
Safety Car
Joined: Feb 1999
Posts: 4,724
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From: Little Elm TX
Re: More Torque Converter Questions (mackeyred96)
I too typically take my converter up to roughly 1200-1400 rpm and let her rip. I have found that if I leave from idle my reaction time suffers and sometimes the 60 foot time. Also on occasion, when leaving from idle the motor will stumble very slightly, which of course also isn't good for rt or et's.
Taking your converter to the max brake stall is dangerous for me... breaks can fade and you slide through the lights before the green... (Not a good thing bracket racing:(), and I believe you want the converter to charge to the flash stall to a certain extent.
Every motor/tranny/converter set-up reacts differently though... I recommend you do some on track testing to see where yours peforms best.
good luck
Beach Bum
Taking your converter to the max brake stall is dangerous for me... breaks can fade and you slide through the lights before the green... (Not a good thing bracket racing:(), and I believe you want the converter to charge to the flash stall to a certain extent.
Every motor/tranny/converter set-up reacts differently though... I recommend you do some on track testing to see where yours peforms best.
good luck
Beach Bum
Thread Starter
Safety Car
Joined: Dec 2000
Posts: 4,329
Likes: 10
From: Cape Coral fl
Re: More Torque Converter Questions (mackeyred96)
I am using the 3.45's because I still had them laying around after I broke the 4.09's. I considered something steeper, but street driving is also a concern for me. Not just cruising around, but highway driving as well. If me ET's are not where I want them to be, then I will consider something else.
Tony
Tony
