Re: 426 Hemi head with damage
[Re: Bull1tt]
#1408274
03/24/13 10:30 PM
03/24/13 10:30 PM
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Joined: Dec 2012
Posts: 155
my state of mind
jimkn
member
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member
Joined: Dec 2012
Posts: 155
my state of mind
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jb weld  honestly i wouldnt worry about it to much unless your building a serious race motor as there for the valley studs, maybe if you want to sleep better have them cold stitched & forget about it!!!
" if you didn't own it since new then the fender tag is fake "
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Re: 426 Hemi head with damage
[Re: Bull1tt]
#1408276
03/24/13 11:21 PM
03/24/13 11:21 PM
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Joined: Aug 2005
Posts: 4,799
ILL
MLR426
master
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master
Joined: Aug 2005
Posts: 4,799
ILL
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Quote:
this long crack can be felt with your fingernail.
I can fix this head but have questions.
The long one you said you can catch your nail on it ? Does it keep going off the head deck and around and down across the intake seat and pass into the throat below the seat ?
The head stud cracks I would stitch pin them on both sides of the threaded hole to stop cracking and then drill and install a time sert. I would also stitch pin the deck crack and possibly install a new seat if needed. After repair the head would have to be surfaced to clean up the deck surface. If the deck crack goes well into the intake throat area where you cannot get to it then the head will have to be welded with cast iron rod to fix it right which is a more extensive repair.
MLR426
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Re: 426 Hemi head with damage
[Re: MLR426]
#1408279
03/25/13 11:11 PM
03/25/13 11:11 PM
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Joined: Jan 2005
Posts: 1,606
Pgh, PA
Bull1tt
OP
top fuel
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OP
top fuel
Joined: Jan 2005
Posts: 1,606
Pgh, PA
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Quote:
Quote:
this long crack can be felt with your fingernail.
I can fix this head but have questions.
The long one you said you can catch your nail on it ? Does it keep going off the head deck and around and down across the intake seat and pass into the throat below the seat ?
The head stud cracks I would stitch pin them on both sides of the threaded hole to stop cracking and then drill and install a time sert. I would also stitch pin the deck crack and possibly install a new seat if needed. After repair the head would have to be surfaced to clean up the deck surface. If the deck crack goes well into the intake throat area where you cannot get to it then the head will have to be welded with cast iron rod to fix it right which is a more extensive repair.
MLR426
I went and looked this head over tonight. I could not see any sign of the crack anywhere other than the deck. No sign down to the seat area or beyond. Even had an extra set of eyes from a buddy studying as well.
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Re: 426 Hemi head with damage
[Re: FM3_1970]
#1408280
03/25/13 11:14 PM
03/25/13 11:14 PM
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Joined: Jan 2005
Posts: 1,606
Pgh, PA
Bull1tt
OP
top fuel
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OP
top fuel
Joined: Jan 2005
Posts: 1,606
Pgh, PA
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Quote:
Did you mean to post this in the Ebay/WIW section? Might get more opinions if it was in Q & A or Race. 
Move it to the Q&A, fine by me!
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Re: 426 Hemi head with damage
[Re: Bull1tt]
#1408282
03/26/13 10:40 PM
03/26/13 10:40 PM
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Joined: Aug 2005
Posts: 4,799
ILL
MLR426
master
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master
Joined: Aug 2005
Posts: 4,799
ILL
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Quote:
Quote:
Quote:
this long crack can be felt with your fingernail.
I can fix this head but have questions.
The long one you said you can catch your nail on it ? Does it keep going off the head deck and around and down across the intake seat and pass into the throat below the seat ?
The head stud cracks I would stitch pin them on both sides of the threaded hole to stop cracking and then drill and install a time sert. I would also stitch pin the deck crack and possibly install a new seat if needed. After repair the head would have to be surfaced to clean up the deck surface. If the deck crack goes well into the intake throat area where you cannot get to it then the head will have to be welded with cast iron rod to fix it right which is a more extensive repair.
MLR426
I went and looked this head over tonight. I could not see any sign of the crack anywhere other than the deck. No sign down to the seat area or beyond. Even had an extra set of eyes from a buddy studying as well.
Have them dyed or mag them and pressure test, the tricky part is the crack is on a fire ring area. Are you sure it's a crack ?? Strange place for crack.
MLR426
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Re: 426 Hemi head with damage
[Re: MLR426]
#1408283
03/26/13 11:00 PM
03/26/13 11:00 PM
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Joined: Jan 2005
Posts: 1,606
Pgh, PA
Bull1tt
OP
top fuel
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OP
top fuel
Joined: Jan 2005
Posts: 1,606
Pgh, PA
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Quote:
Quote:
Quote:
Quote:
this long crack can be felt with your fingernail.
I can fix this head but have questions.
The long one you said you can catch your nail on it ? Does it keep going off the head deck and around and down across the intake seat and pass into the throat below the seat ?
The head stud cracks I would stitch pin them on both sides of the threaded hole to stop cracking and then drill and install a time sert. I would also stitch pin the deck crack and possibly install a new seat if needed. After repair the head would have to be surfaced to clean up the deck surface. If the deck crack goes well into the intake throat area where you cannot get to it then the head will have to be welded with cast iron rod to fix it right which is a more extensive repair.
MLR426
I went and looked this head over tonight. I could not see any sign of the crack anywhere other than the deck. No sign down to the seat area or beyond. Even had an extra set of eyes from a buddy studying as well.
Have them dyed or mag them and pressure test, the tricky part is the crack is on a fire ring area. Are you sure it's a crack ?? Strange place for crack.
MLR426
It's like somebody tried to pry the head off an engine with those two bolts still in!
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Re: 426 Hemi head with damage
[Re: Bull1tt]
#1408284
03/27/13 02:06 AM
03/27/13 02:06 AM
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Joined: Jan 2007
Posts: 1,668
Mi,U.S.A.
mike s
top fuel
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top fuel
Joined: Jan 2007
Posts: 1,668
Mi,U.S.A.
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Mag it.It can be welded and will be as good as new if done properly.If there isn't anyone local to you who can do it I have someone up here who can.It will need to be resurfaced.
Last edited by mike s; 03/27/13 02:10 AM.
Leave the gun.......take the Cannoli's....Mike
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