Barracuda Challenger Forum

Author Topic: Broken exhaust manifold stud  (Read 169 times)

Offline 73440

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Broken exhaust manifold stud
« on: May 06, 2017 - 02:53:03 PM »


Took a drive to Smileys Racing to buy 5 gallons of VP 110 leaded. Adjusted the idle, checked timing , it's at 12 btdc , then tried to reduce exhaust manifold leak and decided to snap one of the studs.
Still has the original turquoise paint on the bolt.
67 440
73 Barracuda w/ 68 440
65 Plymouth Fury III , I sold ,was my Nana's car till 92 yo.
51 Ford F1 239 Flathead, flipped , new cab , stolen
59 BelAir 283 4 door original patina
01 Chevy van 375,411 miles
06 Crown Vic Police Interceptor
75 HD Ironhead converted to RH shift
73 HD Ironhead
82 HD Ironhead
74 Norton 850
80 HD Shovelhead
80 Husqvarna WR 390




Offline xtopfuel

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Re: Broken exhaust manifold stud
« Reply #1 on: May 06, 2017 - 04:02:15 PM »
Ugh that sucks

Offline 73440

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Re: Broken exhaust manifold stud
« Reply #2 on: May 06, 2017 - 05:20:18 PM »
It turned very easy, so it was probably going to let go soon.
Now it matches the starter bolt threads in the bell housing that are stripped.
40 year old engine will do that.
67 440
73 Barracuda w/ 68 440
65 Plymouth Fury III , I sold ,was my Nana's car till 92 yo.
51 Ford F1 239 Flathead, flipped , new cab , stolen
59 BelAir 283 4 door original patina
01 Chevy van 375,411 miles
06 Crown Vic Police Interceptor
75 HD Ironhead converted to RH shift
73 HD Ironhead
82 HD Ironhead
74 Norton 850
80 HD Shovelhead
80 Husqvarna WR 390


Offline xtopfuel

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Re: Broken exhaust manifold stud
« Reply #3 on: May 06, 2017 - 11:25:53 PM »
True

Offline mopar jack

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Re: Broken exhaust manifold stud
« Reply #4 on: May 07, 2017 - 09:43:37 AM »
I have had that happen on the drivers side rear bolt, just broke off with no torque.

Offline 73440

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Re: Broken exhaust manifold stud
« Reply #5 on: May 07, 2017 - 03:54:11 PM »
 I recently replaced the header with the exhaust manifold and maybe it's possible that with the heating and the cooling and the different expansion rates of cast iron and steel tubing the stud stretched it a little bit because it was fine a month or so ago when I last checked .
This stud was drivers side second from front.
67 440
73 Barracuda w/ 68 440
65 Plymouth Fury III , I sold ,was my Nana's car till 92 yo.
51 Ford F1 239 Flathead, flipped , new cab , stolen
59 BelAir 283 4 door original patina
01 Chevy van 375,411 miles
06 Crown Vic Police Interceptor
75 HD Ironhead converted to RH shift
73 HD Ironhead
82 HD Ironhead
74 Norton 850
80 HD Shovelhead
80 Husqvarna WR 390

Offline 67vertman

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Re: Broken exhaust manifold stud
« Reply #6 on: May 08, 2017 - 01:35:11 PM »
Sorry hear that.   :hyper: Hopefully it is not flush to the head and you can get it out easily .  :2thumbs:



Ron - Born and raised in Southern California

I got the 1970 Cuda, but still need the hot blonde to ride shotgun!

First car -1969 Road Runner 383 4sp

Current ride - 1970 Barracuda 440-6 4 sp Dana 60  (4:10)

Offline 73440

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Re: Broken exhaust manifold stud
« Reply #7 on: May 08, 2017 - 02:19:39 PM »
Probably flush, it snapped right at the start of the threads.
67 440
73 Barracuda w/ 68 440
65 Plymouth Fury III , I sold ,was my Nana's car till 92 yo.
51 Ford F1 239 Flathead, flipped , new cab , stolen
59 BelAir 283 4 door original patina
01 Chevy van 375,411 miles
06 Crown Vic Police Interceptor
75 HD Ironhead converted to RH shift
73 HD Ironhead
82 HD Ironhead
74 Norton 850
80 HD Shovelhead
80 Husqvarna WR 390