Okay, all you gears! Everybody out! Exit this way! No waiting! Sheesh. Glad I wasn't there. Bet it made one hell of a noise. Sorry about your misfortune.
Originally posted by Cooter: Which came first, the chicken or the egg?
Well the chicken crossed the road....... Ahhh nevermind Good question, really don't know Happend during burnout practice. Trying to get the 3 pedal and only 2 feet down. Next thing I know, it feels like I just got hit from behind and a lot of smoke. Can't remember a big bang though or anything like it.
Any tranny experts here that could decipher the remains?
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12:40 AM
Uaana Member
Posts: 6570 From: Robbinsdale MN US Registered: Dec 1999
Careful with the clutch drops on the isuzu, unless you're doin' some informal strenght testing for us never have heard of anyone blowing up an isuzu...
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08:49 AM
Tina Member
Posts: 2858 From: At an elevation of 8564 feet. Registered: Nov 2000
I guess were just gonna have to wait and see. People always say what there cars CAN DO. You rarley hear of the limits, or " Where the buck stops" so to speak. So I guess you could call it a test. Luckily I got all the nasty driving habits required,and a great BF/mechanic who loves the challenge.
bloody hell, you guys are lucky that thing didn't jam and throw the car in a really ugly spin.
I've never seen a tranny bomb like that except in drag racing. I've never seen a clutch that cooked. That thing was frying in there a long time before it exploded.
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04:58 PM
Tina Member
Posts: 2858 From: At an elevation of 8564 feet. Registered: Nov 2000
Hey Tina, I recently heard of your achievments from a friend of mine, I also saw the pictures. Ouch, My tranny blew as well, but not with such severity as yours. I think I twisted off the input shaft. I have a V-8 '85 GT that runs mid 12's in the 1/4 mile. I"ll talk to you soon, Jurell
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02:58 AM
Alex4mula Member
Posts: 7410 From: Canton, MI US Registered: Dec 1999
Hey Tina, Do you know what brand of clutch/p.plate was that? Was it the stock V6? Is that transmission a Getrag? Tks.
Sorry to see that. My original (1988 Formula) p.plate broke two springs once. Not pretty. Car has less than 20K miles then. Cost me $1K for the dealer to replace. Damn 12K GM warranty in those days ...
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09:24 AM
DJRice Member
Posts: 2741 From: Merritt Island, FL USA Registered: Jun 99
If you consider that the angle of the dangle is proportional to the heat of the meat then it becomes quite obvious that the tangent rotational velocity of the pressure plate exceeded the velocity of the output shaft.
You need a vanity plate that says "shredder"!
------------------ Dillon Black '87 SE V6 "You mean like the back seat of a Volkswagen?"
Before, all you heard was "no reported failures or problems" now, suddenly all the v8 tranny failures start to show up. Anybody else have complete failures with their v8 Fiero?
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10:10 AM
Archie Member
Posts: 9436 From: Las Vegas, NV Registered: Dec 1999
Originally posted by Wannabe: Before, all you heard was "no reported failures or problems" now, suddenly all the v8 tranny failures start to show up. Anybody else have complete failures with their v8 Fiero?
Maybe you should quote the whole statement, not just part of it. It actually reads like this "Using engines in the 250 to 400 h.p. range, we have run in excess of 500,000 miles on our test cars, and have had no drive line failures. It should be noted, however, even though we have had no failures, that any motor vehicle can fail if subjected to severe and constant abuse. Contrary to some of the claims made by others, we guarantee that the stock fiero axles won't break."
BTW, for those who can't tell, that appears to be a stock Fiero clutch and it's a 4-speed transmission. From looking at the pictures it is MHO that the clutch itself was at least a contributing factor in the failure. And the broken, discolored pressure plate is an indication that some abise was going on here. Tina has already told you that.
Archie
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03:17 PM
Raydar Member
Posts: 41218 From: Carrollton GA. Out in the... country. Registered: Oct 1999
Originally posted by Will: I think I recall that you said that's a 4-spd? Was it the V6 4spd or the 4cyl 4spd? They were different transmissions, right?
I think the case split from the torque and the resulting angle of the input shaft tore the clutch up.
I don't think it was ever stated which 4-speed it was, but I think Tina's car is an 84. I've heard that the V-6 4-speed has the same internals, but has a stronger case. Not sure how the Isuzu compares, but I've heard of several of them behind V-8s and V-6s. Have also heard that the Isuzu's weak link is the shift forks. FWIW.
------------------ Raydar - aka Steve
88 T-top Formula 88 soon-to-be-V6 coupe
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06:13 PM
Tina Member
Posts: 2858 From: At an elevation of 8564 feet. Registered: Nov 2000
Originally posted by DJRice: If you consider that the angle of the dangle is proportional to the heat of the meat then it becomes quite obvious that the tangent rotational velocity of the pressure plate exceeded the velocity of the output shaft
I think you just gave me a headache! Asprin, anybody?
Just to clear up the confusion.
Muncie 4 speed from 84 Cluch replacment LUK the bigger out of the 2 forget which size But there is only two options Engine 383 Hp ??
This is my daily driver during the summer, and drivetrain held up just fine. That is, until the stress-test. Next Izusu 5 speed and another LUK clutch
Tina
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07:50 PM
Archie Member
Posts: 9436 From: Las Vegas, NV Registered: Dec 1999
I'll be at the Dells Run too!!! That is one fun time (except for the 5 inches of rain in an hour last year). At least everyone found out if their sunroof or t-top leaked.
Ok Tina, I've had some time to look at all your pics of your blown tranny and I have a theory on what happened. First off, this is a complete catestrophic failure that had a number of different things happen at once. The main factor would be the torque of the engine.
As you can see there is NO friction material left on your clutch disc and the pressure plate is severely discolored. The heat from the clutch slipping caused the discoloration of the pressure plate and melted the friction material.
Now here is where you'll probably never figure out what happened first, so I'll just list all that was going on...
The torque of the engine broke the pressure plate from the leaf springs. After that happened the pressure plate fractured. Due to torque or broken disc.
Also, you can see that you are missing some of the segments on your disc. since they're not in the picture at all I'm guessing you never found them. After the friction material was gone there was nothing for the pressre plate to clamp on to except the segments. Some of the segments then broke off and flew around in the bellhousing. The broken segments may have flown through the pressure plate and broken it into pieces. But it did NOT cause the damage in the bellhousing that you thought was segment damage. That damage is from the broken leaf springs on the clutch. When they snapped the centrifugal (sp?) force made them swing outward and they gouged the bellhouseing.
I agree that the transfer case damage is from the torque of the engine...a broken segment could not have made it that that far from the bellhousing or caused that big of a fracture.
I think that if you replace his clutch with another clutch of the same type and you continue to have so much fun with your V8 that thi will happen again in no time. When you order a new clutch see if they can get you one with higher clampload.
Ok, that's my $.02
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11:21 AM
PFF
System Bot
jerpro Member
Posts: 327 From: grand rapids, MI Registered: Nov 2000
Girl in a 400+hp Fiero busts a tranny after half an hour of consecutive burnouts, and is gonna toss another one in and go to town again...
Do You have a sister?!?!?
Best! Ben.
PS: Tina, you can drive my car anytime, though maybe we'll limit to 15minuite burnout sessions at once, and wait cause I want to get a clutch that has more clamping force
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08:23 PM
artherd Member
Posts: 4159 From: Petaluma, CA. USA Registered: Apr 2001
I just had a thought, tina how fast were you (or rather, your rear wheels) going at the time this happened? I wonder, because it seems the transmission is split on the wrong side (bottom as installed in a fiero) for it to be engine torque to have caused it...
My theroy is that the clutch... well, totally melted dudette (rule and that it basically went from slipping at 6000/5000rpm, to dead stop, in a few milliseconds.
The rest of the driveline and/or car was still turning, and that pinpoint confinment and release of kenetic angular momentum split your case backwards-style.
In any event, "heh, cool"
Best! Ben.
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08:28 PM
Formula88 Member
Posts: 53788 From: Raleigh NC Registered: Jan 2001
84 muncie? 85 muncie yeh thats it. Your tranny WAS a muncie. 84s had an isuzu. At any rate that is cool. I have a couple muncies and a butt load of 84 trans, sport and economy.
WOW! Just came back to the list to read and saw this ugly photo. You might want to install a tranny blanket this next time. Beats the heck out of clutch coming through the firewall and into your back. Getting fragged isnt fun.
So what are the limits of the 5speed? Can you get the 5Speed built up for higher torque motors?
"Mr. Owl how many licks does it take to get to the center of a tootsie pop?"
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02:24 AM
Tina Member
Posts: 2858 From: At an elevation of 8564 feet. Registered: Nov 2000
So how long did you hammer on this before it blew? V8 owners want to know! )[/B]
Talk about abut a post with some dust on it O.K., once more for you V-8's out there. This was my daily driver all last year. And, no I did not baby it. Just ask the Mustangs, Corvettes,etc in my neighborhood. Held up fine all summer long. How fast the tires where spinning? Cant't recall anymore,sorry. Too long ago. All I can say the Muncie took a hell of a beating that afternoon, before it went to Tranny heaven.