In the process of doing the plenum plate I had 4 bolts snap off. I got them all out with a little heat and pb blaster, but 1 on the front passenger side gave me problems. I ended up breaking off a bolt extractor in the bolt. After finally chipping the bolt extracter out I was able to drill out the hole, but its not pretty. It was too big for a heli coil, so I filled it up with jb weld. Does anyone have any experience with jb weld on this kind of situation? Its still curing, so I'm wondering if its going to be strong enough to hold a torqued intake bolt. I was also debating just drilling a through hole through the jb weld and putting a longer grade 5 bolt and nut on the back side since the back side is exposed. Any advise?

 

I'll just leave this here.

http://www.northerntool.com/shop/too...Google&cm_ite=


But reality, fix it right. it may cost more, but it will cost you less in the long run from having to redo work. It may hold for ever, or the heat may crack it and cause a leak.

 

i think a nut on the back would hold a lot better than the jb-weld. unless you have a really big blob that can hold onto the bottom side, the jb won't have anything to really grab hold of.

 

The intake only needs 12 ft/lbs of torque. I think JB weld would be okay.

If you can get a nut/bolt combo to torque correctly and hold even pressure that should work too.

 

I wonder why your intake bolts were so tough? Mine came right out

 

I broke 2 when I did mine , I drilled threw the front one and put a bolt under it
And the one I broke in the back I just let ur be and put my manifold back on , no problems

 

I broke both front bolts..... drilled a pilot hole thru 'em, then ran a larger bit thru, and blew the rest out with a torch. Ran a tap down 'em all to clean up the threads, and I was golden.

 

I got lucky and only broke the head off the front passenger side bolt. Used a set of vice grips to get it out.

 

Thanks for the replies. I did notice the 4 corner bolts were a lot more corroded than all the others. The 2 in the very back broke off at the bolt head so I was able to weld a nut onto the stud and put some heat on it and they broke free. The 2 in the front sheared off flush with the heads. One i was able to drill out and heli coil, but the other one is the one that gave me trouble. I thought about blowing them out with a cutting torch too, but I thought the heat would be bad on the head. Kinda wish I would have went that route now. The jb welds been sitting for 24 hrs so I'll try to run a tap through it after work tomorrow. If it seems sketchy Ill try a hex nut on the back side. I'm also an aluminum welder, and have a mig at home set up for aluminum but I'm not sure if heat on the head is a good idea. I'm trying to avoid pulling the head off if possible. Guess I'll see what happens tomorrow.

 

I guess the aluminum welding is out of the question as I did a magnet test and the heads are iron... no wonder why the bolts wouldnt pound out easy. I've never welded cast so I'll see how threading the jb weld does.