GOLDMYN
Senior Member
The manifold is reproduction from year one
Exhaust leak, my broken bolt
- Thread starter GOLDMYN
- Start date
The Captain
Active Member
- Joined
- May 2, 2011
- Messages
- 231
- Reaction score
- 183
Get a Remflex exhaust gasket and put it back together
cbarge
World Famous Barge in a Budget
If you are handy with a mig welder build up the weld atop the broken stud then weld a nut atop the weld. Out she comes.
No head removal no drilling
No head removal no drilling
65sporty
Old Man with a Hat
I use this trick all the time on aluminum heads, but I haven't tried it on iron heads. The weld won't stick to aluminum.
volksworld
Well-Known Member
the first rule of extractors is that if the bolt was rusted in so well that it broke off, an extractor will never get it to move either and being smaller in diameter and hardened to the point of being brittle its guaranteed to break also...since they're tapered they also jam into the hole, expanding the od of the stud and jamming it even tighter....the rust is the problem and it needs to be broken free with lots of alternating oxy acetelene heat and penetrant to stand a chance of getting it out...this can also be a very expensive learning experience as you dont want to drill it cockeyed, off center, hit a water jacket or god forbid break off an extractor in it...letting a competent machinist tackle it may be safer and cheaper in the long run
- Joined
- Nov 14, 2010
- Messages
- 28,156
- Reaction score
- 27,320
Kroil is the best penetrant by far, it’ll get you your best shot at getting that out.
Here is my 2 cents. Yes the cyl. head must be removed. Avoid extractors, as volksworld and Big John stated, breaking off, expanding the stud or bolt in the hole will only compound removal. A 3/16 left twist cobalt drill bit, a candle, variable speed drill and a acetylene torch will be needed. Do this in a open area w/ no combustibles around. Have the cyl. head facing exhaust ports up. Have your drill ready to use. Heat the area around the till it begins to glow cherry red. Then jam the candle into the bolt hole, wear protective gloves. Carefully drill out the broken stud. Any questions PM me.
Last edited:
68PK21 440.6bbl
Old Man with a Hat
Quit monkeying around!
65sporty
Old Man with a Hat
I have never tried the candle trick, I have heard about it, just never tried it
The paraffin wax cleans out the rust or corrosion between the stud and block. Can be used on other metals if done carefully.
Verse
Active Member
I also had this problem. I pulled the heads and using my drill press, drilled the studs out of the head. I did not touch the threads. With a tap I removed the remaining metal and all the original thread remained.
68PK21 440.6bbl
Old Man with a Hat
My experience is that sometimes you can start to remove the remaining stud metal/thread area with a prick punch, then a carpenters awl, you can wind it out as you would with a old/damage helicoil if your really really really lucky. Then you can do any cleanup with a tap if you want, of course this all depends on that you drill completely on center. But even if your a little off center you can still collapse the remaining stud and pull it out with very very very 'needle' nose pliers. (electronic kind). Just drilling it out by a less experienced mechanic and running a tap down the hole can lead to diminished threads, believe me I've been down that road and when you apply torque the bolt/stud will strip-out then it's helicoil time. And that can be a ***** if you assembled the part into a inaccessible area. 2¢
GOLDMYN
Senior Member
success! First off, I want to thank everyone who took the time to answer me. I took the easy way out. I had the car taken to a local shop, I explained what I needed and if he (mechanic) couldn't get it done to tell me up-front. He said he had done the extraction before with good results. he nailed the old bolt dead on.
Samplingman
Old Man with a Hat
GOLDMYN
Senior Member
2 hr = $180.00, The tow bill $50. X2 $100. Like my wife says "there're just money pits" but I reminder her, it's my pension, I don't smoke, drink or pay some ones rent
3175375
Senior Member
It’s got to be a relief to have it done. Good decision!
65sporty
Old Man with a Hat
I read the receipt and I am amazed that it backed with a easy out. Awesome that it all worked out well. Did he install the manifold also?
GOLDMYN
Senior Member
no, I sent the manifold to a local engine builder and he cleaned the surfaces for me, I'll be putting it together
GOLDMYN
Senior Member
The engine is 53K original miles, the plugs are brown which is what there're suppose to be
WissaMan
Well-Known Member
- Joined
- Sep 12, 2018
- Messages
- 598
- Reaction score
- 607
I just read through your thread -- I'm glad it had a happy ending!
Just wanted to add my .02 on loosing rusty nuts and bolts: I agree with the folks that suggest hitting them with a torch. I do that too and it works every time.
Just wanted to add my .02 on loosing rusty nuts and bolts: I agree with the folks that suggest hitting them with a torch. I do that too and it works every time.
Similar threads
