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Transmission Flair up #1626618
05/29/14 10:51 PM
05/29/14 10:51 PM
Joined: Jan 2003
Posts: 1,235
TN
6
65racer Offline OP
2009 IHRA World Champion
65racer  Offline OP
2009 IHRA World Champion
6

Joined: Jan 2003
Posts: 1,235
TN
Ok guy's I have a small problem I have been chasing
for a few weeks now, and can't seem to find the problem.
the transmission in the car works flawles, but ever now
and then it will flair in low gear before the shift, it has
happened twice and cost me the rd win, once was in the semi's
with 3 cars left, and last weekend in the 4th rd, never seems
to be in the same spot, but always before the 2nd gear shift,
I have had the trans out and looked it over, and just can't
seem to find anything to point a finger at, as to what is
causing it to happen, this is just something it has started doing
this season, I need to fix this problem before to long, as
I am leading the points chase at the track, and just can't
be giving rds back because of something of this nature,
so if anyone has any suggestions, please throw them my way,
and let;s see if we can solve this little problem.

Thanks

Dave

Re: Transmission Flair up [Re: 65racer] #1626619
05/30/14 12:42 AM
05/30/14 12:42 AM
Joined: May 2014
Posts: 2
Chesterfield,Virginia
7
774DRAspen Offline
member
774DRAspen  Offline
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Joined: May 2014
Posts: 2
Chesterfield,Virginia
Hey Dave can you explain a little more in details? does it pull after the flair up or what?
It seems like its happening after you have a few passes on it.are you sure its not overheating? check cooler and make sure its not plugged..

Re: Transmission Flair up [Re: 774DRAspen] #1626620
05/30/14 12:47 AM
05/30/14 12:47 AM
Joined: May 2014
Posts: 2
Chesterfield,Virginia
7
774DRAspen Offline
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774DRAspen  Offline
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Joined: May 2014
Posts: 2
Chesterfield,Virginia
can you tell me what's all been done to the tranny as well.I will try my best to help you out.

Thanks,
Steve

Re: Transmission Flair up [Re: 65racer] #1626621
05/30/14 12:48 AM
05/30/14 12:48 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
Whats your line pressure

Re: Transmission Flair up [Re: 65racer] #1626622
05/30/14 01:04 PM
05/30/14 01:04 PM
Joined: Jan 2003
Posts: 1,812
Portsmouth, VA
D
DusterW2 Offline
top fuel
DusterW2  Offline
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Joined: Jan 2003
Posts: 1,812
Portsmouth, VA
What valvebody? Low band apply in 1st? Over-running clutch condition?

Re: Transmission Flair up [Re: DusterW2] #1626623
05/30/14 02:05 PM
05/30/14 02:05 PM
Joined: Jan 2003
Posts: 25,786
Rio Linda, CA
John_Kunkel Offline
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John_Kunkel  Offline
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Posts: 25,786
Rio Linda, CA

That's my thought, if no LBA the sprag might be slipping just before the 1-2 shift.


The INTERNET, the MISinformation superhighway
Re: Transmission Flair up [Re: John_Kunkel] #1626624
05/31/14 08:59 AM
05/31/14 08:59 AM
Joined: Jan 2003
Posts: 1,235
TN
6
65racer Offline OP
2009 IHRA World Champion
65racer  Offline OP
2009 IHRA World Champion
6

Joined: Jan 2003
Posts: 1,235
TN
Sorry guy's for not posting sooner, been having
computer problems, have had the transmission out, and
apart, cannot see or find anything out of the ordinary,
as being the problem, the line pressure is 155 lbs, and the
valve body is a turbo action with a brake, but I don't use
the brake, no lba, when the problem occurs, it flairs so
fast the air shifter will shift the transmission into
2nd gear, you're a sitting duck then,it still pulls when it shifts,
and there is no consistent time it does it, but it seems
to happen when it starts to get some heat in the traansmission,
but it never gets over 200 degrees, I am baffales as to what is causing this problem, it is something that has just started happening
recently, out of ideas?????????????

Dave

Re: Transmission Flair up [Re: 65racer] #1626625
05/31/14 09:07 AM
05/31/14 09:07 AM
Joined: Jan 2003
Posts: 32,394
Q
Quicktree Offline
I Win
Quicktree  Offline
I Win
Q

Joined: Jan 2003
Posts: 32,394
what does flair mean? describe what it's doing a little better.I am sure someone can help.

Re: Transmission Flair up [Re: Quicktree] #1626626
05/31/14 10:08 AM
05/31/14 10:08 AM
Joined: Sep 2006
Posts: 1,442
central ohio
N
nss guy Offline
pro stock
nss guy  Offline
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Joined: Sep 2006
Posts: 1,442
central ohio
I just went thru a similiar problem. My car 60ft great but slipped or flared up on the 1-2 shift. Trans checked good, ended up being the converter. Sent in to ATI and they said only good piece was the back plate.

Re: Transmission Flair up [Re: nss guy] #1626627
05/31/14 10:16 AM
05/31/14 10:16 AM
Joined: Mar 2006
Posts: 9,835
MI, usa
dvw Offline
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dvw  Offline
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MI, usa
If your not using LBA and it is definitely only happening in 1st gear there can be only one cause of slippage. The low roller isn't holding. In low the only hydraulically applied component is the direct(back) clutch. It is applied in all forward gears. I doubt if it would slip in 1 gear only.
Doug

Re: Transmission Flair up [Re: Quicktree] #1626628
05/31/14 10:54 AM
05/31/14 10:54 AM
Joined: Jan 2003
Posts: 1,235
TN
6
65racer Offline OP
2009 IHRA World Champion
65racer  Offline OP
2009 IHRA World Champion
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Joined: Jan 2003
Posts: 1,235
TN
Quote:

what does flair mean? describe what it's doing a little better.I am sure someone can help.




Quicktree, it acts just like it is slipping, when it happens
it hits the shift chip, and shifts the transmission, doesn't
do this all the time just ocasionally, never the same place
in the track, but both times it has been in low gear when it happens,
the 1st time it happened I thought maybe there was something
on the track, that the starting line crew just missed to clean up,
but the second time it was out past the 60' clocks,last weekend,
after it acted up, I went 2 more rds and it was fine, worked
perfect, no idea what is taking place yet, baffled over the deal,
but I need to figure out what is goin on.

Dave

Re: Transmission Flair up [Re: nss guy] #1626629
05/31/14 11:05 AM
05/31/14 11:05 AM
Joined: Jan 2003
Posts: 1,235
TN
6
65racer Offline OP
2009 IHRA World Champion
65racer  Offline OP
2009 IHRA World Champion
6

Joined: Jan 2003
Posts: 1,235
TN
Quote:

I just went thru a similiar problem. My car 60ft great but slipped or flared up on the 1-2 shift. Trans checked good, ended up being the converter. Sent in to ATI and they said only good piece was the back plate.




Hello Jim, was you're problem every pass or just
occasional ? Mine is only every now and then, just
don't know when it is goin to happen, both times it has happened
it has never actually reached the point on the track
for the 1st to 2nd gear shift, it's just like it spins the
tires, and hits the shift chip, and shifts the transmission.

Dave

Re: Transmission Flair up [Re: 65racer] #1626630
05/31/14 12:02 PM
05/31/14 12:02 PM
Joined: Sep 2006
Posts: 1,442
central ohio
N
nss guy Offline
pro stock
nss guy  Offline
pro stock
N

Joined: Sep 2006
Posts: 1,442
central ohio
Started last year slowly getting worse. 2 weeks ago I'd launch the car makle the 1-2 shift and the shift light would never go out, converter was slipping too much. The trans was making the shifts converter slipping. ET and MPH not matching with 60ft.

Re: Transmission Flair up [Re: 65racer] #1626631
05/31/14 01:38 PM
05/31/14 01:38 PM
Joined: Oct 2010
Posts: 2,407
Ambridge, Pa.
R
rickraw Offline
top fuel
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Joined: Oct 2010
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Ambridge, Pa.
Check the valve body, especially the check balls. Look at the separator plate for excessive coining where they seat on the plate. Check the check balls for any signs of wear.

Re: Transmission Flair up [Re: 65racer] #1626632
06/02/14 12:28 PM
06/02/14 12:28 PM
Joined: Jan 2003
Posts: 1,812
Portsmouth, VA
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DusterW2 Offline
top fuel
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Joined: Jan 2003
Posts: 1,812
Portsmouth, VA
What revision TA brake? 17998-4, -5, -6, or -7, and the newest 17999. Some have reported cracks in the transfer channel casting due to machining mods. Here are some pics of the internals -

http://www.turboaction.com/frame.html

scroll down and find Technical Tips, and then the second grouping of links shows drawings of the internals.


Bottom line - high probability it is either the over-running clutch or the converter.

Give Paul Forte a call at TA

Re: Transmission Flair up [Re: DusterW2] #1626633
06/02/14 03:51 PM
06/02/14 03:51 PM
Joined: Jan 2003
Posts: 25,786
Rio Linda, CA
John_Kunkel Offline
Too Many Posts
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Rio Linda, CA
My thinking is, if it were the converter, it would also flare up before the 2-3 shift...only sooner.


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Re: Transmission Flair up [Re: John_Kunkel] #1626634
06/03/14 10:04 PM
06/03/14 10:04 PM
Joined: Jan 2003
Posts: 1,235
TN
6
65racer Offline OP
2009 IHRA World Champion
65racer  Offline OP
2009 IHRA World Champion
6

Joined: Jan 2003
Posts: 1,235
TN
ok guy's here's an update, as I said I could not
find anything that looked to be the culprit, causing
the problem, so put it back in the car, went to the races
this past weekend, made 2 time trials, and 4 rds and the
transmission performed flawless, was it something I replaced
in it while it was apart, I don't think so, all I replaced was the
o-ring on the front pump, time will tell if the problem is
cured, but I feel better about it than before, now I have to fix
a pan leak I have created by being in a hurry to get things
buttoned up, but that ain't no biggie. Thanks for all the
advice we will see how it goes, and btw I still am holding
on to the points lead, gonna dig in and see if I can win this
deal again this year.

Thanks
Dave







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