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Seems that if I didn't have bad luck...
#1052424
08/14/11 12:37 AM
08/14/11 12:37 AM
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Joined: Jan 2003
Posts: 3,616
Riverside, Ca
G_bob
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,616
Riverside, Ca
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I wouldn't have any luck at all.
So I took the car out finally today. First time since last Oct when I got a hole in the driver-side slick after one pass.
So today, I swap on the moroso blue valve cover gaskets to solve a nagging leak back by number 7. Not too bad, but causes embarressing smoke on first start up until it burns off. So while I had the valve covers off I check and tighten header bolts.
Get to the track, leak fixed. Hour plus in tech line.
Finally make a pass and it spins bad, 1.63 sixty and then its popping in higher RPM's. Its never done that before, so I let off and coast to an 11.84 at 86mph.
Check it out back at the trailer and find a nice big crack in the number 7 header tube, right at the flange. Well, now I know where the popping was coming from.
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Re: If I didn't have bad luck, I wouldn't have...
[Re: 8urvette]
#1052427
08/14/11 05:23 AM
08/14/11 05:23 AM
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Joined: May 2004
Posts: 3,210
robin hood country
deaks
master
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master
Joined: May 2004
Posts: 3,210
robin hood country
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I had those gaskets and couldn't get on with them, i now use Greg's ( ROADHAZARD's ) superperformance gaskets much better and a reasonable price.
Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36
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Re: If I didn't have bad luck, I wouldn't have...
[Re: deaks]
#1052428
08/14/11 05:52 AM
08/14/11 05:52 AM
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Joined: Nov 2008
Posts: 660
San Diego
formula S
mopar
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mopar
Joined: Nov 2008
Posts: 660
San Diego
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Quote:
I had those gaskets and couldn't get on with them, i now use Greg's ( ROADHAZARD's ) superperformance gaskets much better and a reasonable price.
Mick
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Re: Seems that if I didn't have bad luck...
[Re: G_bob]
#1052429
08/14/11 06:01 AM
08/14/11 06:01 AM
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Joined: Jul 2004
Posts: 19,318
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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Had the exact problem w/my Hookers and my buddy at Howards Muffler patched and welded it up and it`s fine. 
Last edited by Thumperdart; 08/14/11 06:01 AM.
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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Re: Seems that if I didn't have bad luck...
[Re: G_bob]
#1052430
08/14/11 09:32 AM
08/14/11 09:32 AM
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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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Make sure you drill a stress reliever hole at the ends of the crack before welding EDIT Also if the flange isnt cut between the end pipes and the center pipes you should... it reduces the stress on the pipes allowing them to grow easier 
Last edited by MR_P_BODY; 08/14/11 09:35 AM.
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Re: Seems that if I didn't have bad luck...
[Re: MR_P_BODY]
#1052433
08/14/11 09:16 PM
08/14/11 09:16 PM
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Joined: Jan 2003
Posts: 3,616
Riverside, Ca
G_bob
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,616
Riverside, Ca
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Quote:
Make sure you drill a stress reliever hole at the
ends of the crack before welding
EDIT
Also if the flange isnt cut between the end pipes
and the center pipes you should... it reduces the
stress on the pipes allowing them to grow easier
What's funny is that on these headers, number seven tube is a slip fit that goes around the steering column. It's flange is separate from the rest and there "shouldn't" be any stress on it.
It being the slip fit tube should make it fairly easy to get out in order to fix it. 
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