Gain extra benefits by becoming a Supporting Member Click here find out how!

Classic Performance Products Nu-Relics Power Windows
American Auto Wire Hellwig Products IncPerformance Rod & Custom
Danchuk Catalog



Username Post: Broken manifold bolts        (Topic#366373)
FNF01 
Poster
Posts: 78

Reg: 06-04-16
09-10-21 04:49 PM - Post#2826858    

Engine is out but on a non rotating stand. Both manifolds had the same 1 bolt head snap off when trying to take the off. The bolt isn’t frozen in the head but rather the shank of the bolt is frozen to the manifold bolt holes. I can twist each manifold a few degrees either way and see the bolt turning but can not pull the manifold off the bolt, there is no shoulder or anything on the bolt holding the manifold.

Tried welding a new nut to broken bolt, no dice. Been lubing last few days but without the engine on its side it just runs out. Hammering isn’t working. Drilling isn’t working. I’m out of oxygen for torch and all shops are closed till Monday.

Any ideas?

1964 Impala SS Conv.


 


Mercedes 
Contributor
Posts: 352

Reg: 07-09-18
09-12-21 10:35 AM - Post#2826936    
    In response to FNF01

Rust will put a tremendous amount of pressure on everything because it expands. For that reason, the bolt is stuck. I had the same thing on a 62 engine and I cut the manifold because they were so plentiful it was hard to justify the hours of work to save a part that I could replace for $20.





 
junky 
Valued Contributor
Posts: 3745

Loc: Northeast CT
Reg: 06-27-10
09-12-21 06:26 PM - Post#2826966    
    In response to Mercedes

When you get oxygen again, try to heat the manifold red hot around the bolt, and then rotate it with leather gloves on your hands. That might be enough to break it loose. If it isn't the larger manifold, and you don't care about it, then just cut it off. If it is the 300 HP 327 engine, it is worth the effort to save it. I like Deep Creep by Seafoam as my go-to penetrant.

Never argue with an idiot. He'll drag you down to his level, then beat you with experience.


 
FNF01 
Poster
Posts: 78

Reg: 06-04-16
09-12-21 06:40 PM - Post#2826969    
    In response to junky

Ending up using torch, hammers, oil, welding washer and nut on, drilling all to get this out.

The bolt head snapped off originally, leaving the shank not the threads rusted solid into the manifold not the head.

Torch on just the bolt shroud on the manifold wasn’t enough but heat creep did give me enough room to get the manifold gasket out which gave me enough room for sawzall.

Cut manifold off, still can’t get the shank of bolt out FYI, but bolt was now flush to head. Out comes welder again and out twists the 1/2” or so of bolt threads.

They were 250hp 2” ram horns so nothing crazy and 250hp heads. New alum double humps are going on with 2.5” ram horns so it wasn’t end of world to tear these up or just leave em for next guy but wanted to learn and get the experience

1964 Impala SS Conv.


 
junky 
Valued Contributor
Posts: 3745

Loc: Northeast CT
Reg: 06-27-10
09-12-21 07:10 PM - Post#2826973    
    In response to FNF01

Never force it, get a bigger hammer!! Glad to know that you accomplished the task.

Never argue with an idiot. He'll drag you down to his level, then beat you with experience.


 
rrausch 
"16th Year" Silver Supporting Member
Posts: 14671
rrausch
Loc: L.A, Cal. & St. Louis...
Reg: 04-07-03
09-13-21 10:28 AM - Post#2827017    
    In response to junky

Glad you got 'er done.

1953 210 Convertible, 261 with dual Carter YF 966S carbs, P.S., Remote Bendix P.B. Booster... shade-tree restoration about done.




 


Icon Legend Permissions Topic Options
Report Post

Quote Post

Quick Reply

Print Topic

Email Topic

415 Views
FusionBB
FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.178 seconds.   Total Queries: 16   Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 08:32 PM
Top