Manifold bolt? |
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Anderslober
Senior Member Joined: 30-July-2019 Location: Denmark Status: Offline Points: 763 |
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I had to drill out the other side today. Bolt snapped after heating, whacking, drenching. No worries.
Yes….tapping…..what measurement are the studs? 5/8? I will try and tap for that.
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72 RS 351
Senior Member Joined: 04-September-2014 Location: Knoxville TN Status: Offline Points: 2765 |
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I doubt you will be satisfied with threads tapped into a cast iron manifold, that might be a last resort I'd consider.
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Don
73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000+ rpm 351-4V &4R70W 73 Ranchero GT 351C-4V &4R70W for sale later. 92 Lincoln Mark VII SE GTC, OBDII 347/4R70W |
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Rockatansky
Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6059 |
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IIRC the replacement studs are 7/16-NC (National Course)
7/16"-14 x 2-1/4" to be exact |
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72 GT Ute
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Anderslober
Senior Member Joined: 30-July-2019 Location: Denmark Status: Offline Points: 763 |
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Today is the day, where I will attempt to remove the 3 snapped bolts. 2 manifold bolts and 1 engine mount bolt. Should be fun.
I dont have any welding equipment, so I will drill and use easy out. |
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Rockatansky
Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6059 |
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while you have the pan off, very important!, change the connecting rod nuts they're garbage, the threads fracture out under stress all you have to do is remove, replace, torque to spec 40-45 lb-ft IIRC 16 pieces required |
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72 GT Ute
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handsofstone
Senior Member Joined: 13-April-2018 Location: Northeast Status: Offline Points: 3941 |
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Timing chain has to go as well as a new oil pump. No going back now as you are in it to win it.
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californiajohnny
Moderator Group Joined: 05-October-2013 Location: winlock, wa Status: Offline Points: 14606 |
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do you have an acetylene torch? heat the bolt till its starting to get a spot of orange than they come out
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JOHN
74 GRAN TORINO S&H CLONE 74 VETTE CUSTOM 90 S10 BLAZER 4X4 LIFTED 77 CELICA CUSTOM 75 V8 MONZA SUPERCHARGED 79 COURIER VERT. SLAMMED 75 VEGA V6 5 SPD 70 CHEV C10 P/U 68 MUSTANG FB CONVERSION |
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handsofstone
Senior Member Joined: 13-April-2018 Location: Northeast Status: Offline Points: 3941 |
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Also do the valve seals.
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