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Re: Transmission explosion video at Bristol Mopar show
[Re: CRT]
#1495941
09/04/13 03:53 PM
09/04/13 03:53 PM
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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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Racethis.com caught this transmission explosion at Bristol fri on video. Driver was injured, broken foot, 3rd degree burns to his face and hands and a piece of shapnal to the eye, but will be back.
Check out video here http://www.youtube.com/watch?v=aFc-z5q3i...O4j6YHH5eXBeKNw
If I can get still photos of the damage, I will try to post them later.
Brian
This has to be the worst one I have ever seen.
With all the flame inside the car... its probably
the worst I've seen also
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Re: Transmission explosion video at Bristol Mopar show
[Re: MR_P_BODY]
#1495942
09/04/13 04:25 PM
09/04/13 04:25 PM
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Joined: Aug 2006
Posts: 290
Cincinnati, Ohio
d7cook
enthusiast
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enthusiast
Joined: Aug 2006
Posts: 290
Cincinnati, Ohio
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I'm running a TH400 right now. It requires the same care as a TF which is start your burnout in 2nd or 3rd. The other biggie is never ever neutral the trans at the finish.
One oddity is when you use a manual VB or TB in a TH400 the intermediate band is removed. This eliminates engine braking in 1st and 2nd. You need to be careful when street driving like that because if you're coasting in 1st or 2nd and nail it the trans will spin up and engage pretty damn hard like a neutral slam.
So why run a TH400? I believe they are stronger overall, they are cheaper to build, the bellhousing is deeper which is better for building the converter and the cores are a dime a dozen. Also they don't have the 2-3 shift problem that TF's have. The bad is they are big, heavy and eat HP.
1967 Coronet, 1989 Daytona tube chassis.
Former cars, 66 Charger, 67 R/T, 69 Coronet, 67 Dart GT.
-Banned for life from V8Buick.com-
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Re: Transmission explosion video at Bristol Mopar show
[Re: d7cook]
#1495943
09/04/13 04:33 PM
09/04/13 04:33 PM
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Joined: Jan 2003
Posts: 19,612
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,612
Las Vegas
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Well since we are posting up blowed up tranny videos here is one of mine..Notice no parts or fluid on the ground.... http://www.youtube.com/watch?v=PuhfPsfYBKg&list=TL8CS_-Ad97CAOh yeah we also have two cars with TH400's well one is a 210. One of them has been in service since 2000 in a 3600+ lb car that runs 9's. Neither have had any issues.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Transmission explosion video at Bristol Mopar show
[Re: MR_P_BODY]
#1495944
09/04/13 04:35 PM
09/04/13 04:35 PM
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Joined: Feb 2003
Posts: 4,953
Houston, Texas
TheOtherDodge
master
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master
Joined: Feb 2003
Posts: 4,953
Houston, Texas
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I'm glad my big, clunky 46RE is computer controlled and shifted to 2nd at 6,000 rpm whether it's spinning or not. Although I DO worry about it even with the blanket on it. I'm saving my nickels and dimes for a good race trans instead of the beefed-up factory boat anchor. LOL
Actually if you turn 6000 rpm it wont blow the drum..
even if you spin the sprag..(but your getting close)..
you need to be above 6200 rpm if the drum is in decent
shape... thats why you dont really see any production
engine blowing up the trans... plus the stock trans
is LBA(even years ago)... the manual valve body ones
are where the problem starts
Cool, another good thing that I shift at only 6,000! 
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Re: Transmission explosion video at Bristol Mopar show
[Re: TheOtherDodge]
#1495946
09/04/13 04:57 PM
09/04/13 04:57 PM
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Joined: Jan 2003
Posts: 2,771
Cedar Lake IN
CRT
master
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master
Joined: Jan 2003
Posts: 2,771
Cedar Lake IN
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Quote:
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I'm glad my big, clunky 46RE is computer controlled and shifted to 2nd at 6,000 rpm whether it's spinning or not. Although I DO worry about it even with the blanket on it. I'm saving my nickels and dimes for a good race trans instead of the beefed-up factory boat anchor. LOL
Actually if you turn 6000 rpm it wont blow the drum..
even if you spin the sprag..(but your getting close)..
you need to be above 6200 rpm if the drum is in decent
shape... thats why you dont really see any production
engine blowing up the trans... plus the stock trans
is LBA(even years ago)... the manual valve body ones
are where the problem starts
Cool, another good thing that I shift at only 6,000!
at 6000 RPMs the front drum (on a free rev) is spinning at 13200 RPMs
A stock drum comes apart about 9000 RPMs or 4100 engine RPMs
shifting at 6000 does not make you safe. 
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Re: Transmission explosion video at Bristol Mopar show
[Re: CRT]
#1495948
09/04/13 05:37 PM
09/04/13 05:37 PM
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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:
Quote:
Quote:
Quote:
I'm glad my big, clunky 46RE is computer controlled and shifted to 2nd at 6,000 rpm whether it's spinning or not. Although I DO worry about it even with the blanket on it. I'm saving my nickels and dimes for a good race trans instead of the beefed-up factory boat anchor. LOL
Actually if you turn 6000 rpm it wont blow the drum..
even if you spin the sprag..(but your getting close)..
you need to be above 6200 rpm if the drum is in decent
shape... thats why you dont really see any production
engine blowing up the trans... plus the stock trans
is LBA(even years ago)... the manual valve body ones
are where the problem starts
Cool, another good thing that I shift at only 6,000!
at 6000 RPMs the front drum (on a free rev) is spinning at 13200 RPMs
A stock drum comes apart about 9000 RPMs or 4100 engine RPMs
shifting at 6000 does not make you safe.
I've seen data that they blow at 13,500 rpm.. maybe you
have seen something different (stock drum)
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Re: Transmission explosion video at Bristol Mopar show
[Re: pittsburghracer]
#1495952
09/04/13 06:57 PM
09/04/13 06:57 PM
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Joined: Dec 2006
Posts: 3,667
Arizona
Chris'sBarracuda
master
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master
Joined: Dec 2006
Posts: 3,667
Arizona
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I sure LOVE my powerglide sitting behind my big and small block engines. Then again its usually the driver fault 98 out of 100 times for not knowing when, how or WHY your transmission needs checked out. 
John..
I would bet that there are more Powerglides raced than any other trans.
I could be wrong on that, but it's my guess..
I've personally never seen a glide blow up, ever. And I've watched Super Classes, for almost 30 years.
I would say 90% of Super Class racers use Glides.. 
Like I said, NEVER have seen one explode..
I've broke gear sets though.. That's it.. 
Chris.. 
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Re: Transmission explosion video at Bristol Mopar show
[Re: CRT]
#1495953
09/04/13 07:27 PM
09/04/13 07:27 PM
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Joined: Jan 2010
Posts: 311
Kingsville, Md
grncpe
enthusiast
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enthusiast
Joined: Jan 2010
Posts: 311
Kingsville, Md
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I've seen Turbo 400 do the same thing, KABOOM
http://youtu.be/sW0-6n3UWxY
http://youtu.be/B0e8RQ1Mhyg
http://youtu.be/mR5X4ngiAlo
http://youtu.be/RjLqYxmkp-g
http://youtu.be/CpCWRb4ltss
http://youtu.be/da1AcmoyjsI
Yea I wouldnt judge a turbo 400 by any of those videos. The 56 chevy blew it up way into the run,The nova threw up @ the starting line, was not really eventfull. The promod blew up @ half track...really A pro mod? the only 1 that resembled what a 727 does was the chevelle.Did you notice no blanket or shield on the chevelle? did u notice when they show under the car the converter laying on the ground? I would say he broke something else, which then blew the bell housing apart,trans falls, drive shaft breaks from the angle.... Not starting a pzzin match but not really the same as the duster in the video. Like I said before, I had a more violent 1 than the duster, Just not a fire like that.I decided to go with a turbo, yes it has all the good stuff in it to make me feel good.If the drum makes you feel better, or LBA, good.The end result is the same. They all can blow up. As for the horsepower, & weight. They are heavier, But horsepower? I put a 400 behind the same car I blew the 727 in. 2 years later. the car ran the same #'s it went with the 727. So I dont agree with that. I run the jw bellhousing also, take a look @ how thick it is,makes me feel better & im still racing.As I said earlier sorry for the guy in the video, been there.
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Re: Transmission explosion video at Bristol Mopar show
[Re: bigdad]
#1495956
09/04/13 07:43 PM
09/04/13 07:43 PM
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Joined: Jan 2003
Posts: 19,612
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,612
Las Vegas
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I have seen something similar to that glide pictured twice. Both times they were using a CSR one piece shield and the supplied allen head bolts. In BOTH cases the cause of the failure was the bolts had bottomed out in the block before the transmission was seated against the block. On decal, as soon as the drivers lifted the loud pedal both grenade. Not saying that is what happened there but those are the two times I have seen it happen in the traps.
This was also what we discovered when putting one in the 68 Camaro that resides in my backyard. It was ALMOST seated with the supplied bolts but they had bottomed out in the back of the World block before it was fully seated.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Transmission explosion video at Bristol Mopar show
[Re: Sport440]
#1495959
09/04/13 08:51 PM
09/04/13 08:51 PM
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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:
As far as 4100 or 6200 rpm goes, from the vid, the car launches then all of the sudden the nose drops and the engine Free revs for a slit second and then boom.
It looks like when the sprag goes the engine goes into free rev then boom. I dont think you can react quick enough to avoid the Free Rev.
I know Ive accidently free reved to 7200 in the burnout box before and couldnt react in time.
If the sprag lets go, I dont think I could react fast enough either. Listen to the vid a couple of times before the Boom
Thats the thing.. you have to blow the sprag first..
that is usually done in the previous run... or the
person pedals it.. if the sprag is set and you dont
spin then you wont have any problem... if you pedal
it to get slack in the sprag then you have issues...
how many THOUSANDS of passes have been made without
issue.. if you pedal it... your riding on thin ice
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