Re: A727 Repair
[Re: 74Charger]
#1131304
12/10/11 08:33 PM
12/10/11 08:33 PM
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Joined: Jan 2003
Posts: 9,826
las vegas
70AARcuda
master
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master
Joined: Jan 2003
Posts: 9,826
las vegas
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taking a minute to move after setting for a couple of days is normal for a 727....the converter drains back into the pan...
you start engine in park...pump does not circulate and fill converter until you move gear selector.
start engine and put in neutral..neutral will circulate tranny fluid...
Tony
70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: A727 Repair
[Re: 74Charger]
#1131306
12/11/11 11:09 AM
12/11/11 11:09 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Any other suggestions for improving the shift? I do not want a tire squealing neck-breaker though.
Thanks
A Trans-Go shift kit... it can be set up multiple
ways so you can fit it to your wants, from tire
squawking to firm shifts
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Re: A727 Repair
[Re: 70AARcuda]
#1131309
12/11/11 11:27 AM
12/11/11 11:27 AM
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Joined: Jan 2003
Posts: 75,070
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,070
U.S.S.A.
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Quote:
you start engine in park...pump does not circulate and fill converter until you move gear selector.
We need MYTHBUSTERS to tackle this one .... The trans DOES pump fluid in park, just not as much as in neutral. The transgo kit addresses this with a modified manual valves that has MORE flow in park.
I really find it hard to believe that it fills the converter and everything else after sitting for a few minutes in the 1.5 seconds it takes to shift to drive , this include 30 microseconds going thru neutral...
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Re: A727 Repair
[Re: JohnRR]
#1131311
12/11/11 04:38 PM
12/11/11 04:38 PM
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Joined: Jan 2003
Posts: 32,957
Grand Prairie,Texas
stumpy
I Win
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I Win
Joined: Jan 2003
Posts: 32,957
Grand Prairie,Texas
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Quote:
Quote:
you start engine in park...pump does not circulate and fill converter until you move gear selector.
We need MYTHBUSTERS to tackle this one .... The trans DOES pump fluid in park, just not as much as in neutral. The transgo kit addresses this with a modified manual valves that has MORE flow in park.
I really find it hard to believe that it fills the converter and everything else after sitting for a few minutes in the 1.5 seconds it takes to shift to drive , this include 30 microseconds going thru neutral...
After sitting for a few days not a few minutes.
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Re: A727 Repair
[Re: John_Kunkel]
#1131313
12/12/11 01:22 AM
12/12/11 01:22 AM
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Joined: Jan 2003
Posts: 75,070
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,070
U.S.S.A.
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Quote:
Quote:
I really find it hard to believe that it fills the converter and everything else after sitting for a few minutes in the 1.5 seconds it takes to shift to drive , this include 30 microseconds going thru neutral...
It's not hard to believe when you look at the design of the factory manual valve; in Park the manual valve directs most of the pump's output directly back to the sump effectively robbing the pressure needed too refill the converter. A few seconds of interuppted flow is all that's needed to refill the converter.
Converter drainback is a phenomenon that effects ALL automatic transmissions and no check valve can prevent it...only the TF has a problem with drainback because of the antiquated design of the manual valve which is a holdover from the pushbutton days when there was no Park position in the valve body.
John I fully understand the converter drainback issue.
If you start the car and let it sit in park for a number of minutes the car will take off without that hesitation will it not? If this is the case then there must be some flow there?
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Re: A727 Repair
[Re: JohnRR]
#1131314
12/12/11 07:00 PM
12/12/11 07:00 PM
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Joined: Jan 2003
Posts: 25,899
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,899
Rio Linda, CA
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I'm not saying there is "no flow", just reduced flow and in most cases where you start a car you intend to drive it; so whether or not to wait a few minutes for the converter to refill is up to the individual...most wouldn't want to sit, so shifting to Neutral is the logical choice.
The INTERNET, the MISinformation superhighway
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Re: A727 Repair
[Re: John_Kunkel]
#1131315
12/12/11 07:12 PM
12/12/11 07:12 PM
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Joined: Jan 2003
Posts: 75,070
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,070
U.S.S.A.
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Quote:
I'm not saying there is "no flow", just reduced flow and in most cases where you start a car you intend to drive it; so whether or not to wait a few minutes for the converter to refill is up to the individual...most wouldn't want to sit, so shifting to Neutral is the logical choice.
Which is the same thing I am saying.
I agree people are spoiled by their fuel injected daily drivers, they expect to hop in, turn the key and take off doing 100mph instantly. The cars were not like that when they were brand new.
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Re: A727 Repair
[Re: John_Kunkel]
#1131316
12/14/11 10:50 PM
12/14/11 10:50 PM
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Joined: Apr 2004
Posts: 535
Marilla, New York
RalleyA12
mopar
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mopar
Joined: Apr 2004
Posts: 535
Marilla, New York
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Quote:
It's not hard to believe when you look at the design of the factory manual valve; in Park the manual valve directs most of the pump's output directly back to the sump effectively robbing the pressure needed too refill the converter. A few seconds of interuppted flow is all that's needed to refill the converter.
I believe someone makes a modified manual valve that directs more flow to the converter but I don't remember who. It's supposed to help that problem.
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Re: A727 Repair
[Re: John_Kunkel]
#1131321
12/16/11 02:28 AM
12/16/11 02:28 AM
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Joined: Jan 2003
Posts: 3,424
Portland Oregon
69Dartman
master
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master
Joined: Jan 2003
Posts: 3,424
Portland Oregon
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Like they all said, just start it in neutral so the converter fills back up and you'll be OK. Also don't jump on it for the first few blocks to let everything get up to temp and filled up, after that have fun. You don't notice it as much in a 904 because the whole thing is smaller and lighter so it fills up faster and not as much mass to try and make work.
I always start my Dart in Neutral and run it through the gears real quick, then drive away after that. Probably adds a little extra time on it not having issues while it's not fully up on fluid and pressure. It helps on the later front drivers sometimes too. Sisters Sundance was starting to have issues when cold going into reverse, told her to start it in neutral and let it idle for a bit, run it though the gears, it stopped not going into reverse after that but probably does needs the bands adjusted and a service anyways.
Life's a little bit better when you hit a Camaro.
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