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flex plate broke #1656999
08/10/14 12:31 PM 08/10/14 12:31 PM
Joined: Feb 2008
Posts: 128
West Michigan
7
76318dart Offline OP
member
76318dart  Offline OP
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Joined: Feb 2008
Posts: 128
West Michigan
So guys I was out in my car the other night and got on it pretty hard and when I let out I heard a noise that wasn't good. So I pulled over and checked a few things and I noticed that I had a converter bolt loose so I tightens it up and started it up and still was making noise so I take a look under and my flex plate had broke. Well the motor is a 416 SB with a turbo action 8in 5000. Its just about breaking into the tens. Well it was a tci sfi flex plate. I really Dont wanna get another one lol what flex plates do you guys recommend ? Its internally balanced BTW.

76 dart 318 runs 12.9o @ 103 mph with 1.78 60ft.
Re: flex plate broke [Re: 76318dart] #1657000
08/10/14 01:38 PM 08/10/14 01:38 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
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Joined: Jun 2003
Posts: 52,972
Romeo MI
I use the MP sfi ones.. havent had any problems.. I
think they are built by B&M for MP.. I have the same
one on my 416 also
Re: flex plate broke [Re: 76318dart] #1657001
08/10/14 01:48 PM 08/10/14 01:48 PM
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581 Offline
master
Chris2581  Offline
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Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
I always use Turbo Action,but they are just across town from me,so it's convienent.

Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
Re: flex plate broke [Re: MR_P_BODY] #1657002
08/10/14 01:49 PM 08/10/14 01:49 PM
Joined: May 2003
Posts: 13,202
aZLiViN
J
J_BODY Offline
I Live Here
J_BODY  Offline
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aZLiViN
B&M are full circle type plates if that's what your MP plate was.
Re: flex plate broke [Re: J_BODY] #1657003
08/10/14 01:55 PM 08/10/14 01:55 PM
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
Quote:

B&M are full circle type plates if that's what your MP plate was.



They make both.. full circle and 4 ear... or at least
they did... I have about 6 of them still in the box
from MP but it has a B&M sticker on the plate along
with the SFI sticker
EDIT
I had a full circle on my W-9 and 4 ear on the rest
of my stuff

Last edited by MR_P_BODY; 08/10/14 01:56 PM.
Re: flex plate broke [Re: MR_P_BODY] #1657004
08/10/14 03:29 PM 08/10/14 03:29 PM
Joined: Feb 2008
Posts: 128
West Michigan
7
76318dart Offline OP
member
76318dart  Offline OP
member
7

Joined: Feb 2008
Posts: 128
West Michigan
Thanks guys! Mancini sells the MP ones right?

76 dart 318 runs 12.9o @ 103 mph with 1.78 60ft.
Re: flex plate broke [Re: 76318dart] #1657005
08/10/14 03:37 PM 08/10/14 03:37 PM
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
Quote:

Thanks guys! Mancini sells the MP ones right?



I'm sure they do
Re: flex plate broke [Re: 76318dart] #1657006
08/10/14 06:07 PM 08/10/14 06:07 PM
Joined: May 2003
Posts: 13,202
aZLiViN
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J_BODY Offline
I Live Here
J_BODY  Offline
I Live Here
J

Joined: May 2003
Posts: 13,202
aZLiViN
Quote:

Thanks guys! Mancini sells the MP ones right?



They stock the B&M piece.... I have a six bolt on the way and the 8 bolt they sent me is on the way back to them.... after I found it four days late on the door step of the home we sold over a year ago. I hadn't used them in awile, but it's all straightened out now.

Re: flex plate broke [Re: J_BODY] #1657007
08/11/14 06:47 PM 08/11/14 06:47 PM
Joined: Feb 2014
Posts: 655
Huntsville, AL
A
Airwoofer Offline
mopar
Airwoofer  Offline
mopar
A

Joined: Feb 2014
Posts: 655
Huntsville, AL
I was just putting a full circle plate on my 540 with new ARP bolts. They are pretty strict on how they want the bolts put in. Lube on the threads and UNDER the head. NO washers. They don't want stress risers on the ID of that FLEX plate.

But, parts break...
Re: flex plate broke [Re: 76318dart] #1657008
08/11/14 06:51 PM 08/11/14 06:51 PM
Joined: Jul 2004
Posts: 19,318
State of confusion
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Thumperdart Offline
I Live Here
Thumperdart  Offline
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T

Joined: Jul 2004
Posts: 19,318
State of confusion
I used to break(for whatever reason)the non-round ones but since using the B&M full circle piece, no problems for many many years.

72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: flex plate broke [Re: Thumperdart] #1657009
08/11/14 06:58 PM 08/11/14 06:58 PM
Joined: Mar 2009
Posts: 1,058
bigfork mn
D
dragram440 Offline
super stock
dragram440  Offline
super stock
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Joined: Mar 2009
Posts: 1,058
bigfork mn
Do they just break for no reason or where the bolts coming loose and that made it break.

67' charger 499 RB 10.57 at 127
Re: flex plate broke [Re: dragram440] #1657010
08/11/14 07:17 PM 08/11/14 07:17 PM
Joined: Jul 2004
Posts: 19,318
State of confusion
T
Thumperdart Offline
I Live Here
Thumperdart  Offline
I Live Here
T

Joined: Jul 2004
Posts: 19,318
State of confusion
The bolts were always tight and was more than likely a balance or builder issue looking back.

72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

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