Heat shield screws

[trbig]

Anyone had any experience with the screws breaking off on the collector pipe for the heat shields? I had one break off, so I drilled and went to use the easy-out on it... and of course it snapped. I can honestly say that I don't think one of those has EVER worked for me. It had Liquid Wrench sitting on it for a week before I tried to ease it out...

Anyway... my thoughts are to grind this part off the pipe with a Dremmel... leaving just a bit to tack to... and spot weld a fine thread nut there. My welder is screwing up a bit though and was wondering if you guys thought that JB Weld or something would hold that nut? I don't know the temp rating for it, but that area gets dang hot.


Tod

[mro]

JB Weld or something

has it's uses but don't think that is one that would last.
Removeing stuck or stripped nut/bolts, and broken off fasteners becomes "easier" with practice. Seldom is fun tho .

Useing an easyout is like tightening a nut/bolt and have there limitations. heat might have been helpful.

If you need to put a nut into thin metal a nut-sert can work very well if installed properly and tack welded in place if not. Most hardware stores have em.


mro

[trbig]

I don't know what a nutsert is, but I was wanting to not perforate the collector pipe. That's why I was thinking about grinding it down and welding something in place... if I can get my welder to work. I have just never used JB Weld, so didn't know how strong it would be or how impervious to those temps there.


Tod

[skids]

I saw some heat shields in the catalogs (years ago) that had built-in ring gear clamps which appeared to be conceiled.

[trbig]

I was wondering about that!

The back one looks like it may have had one of these clamps.. but since it wasn't round there on the back side where the pipe from #1&2 come into the collector, it looks like maybe they cut and welded it.





Anyone know where to even look to find one of these clamps? The one I am needing is in a round spot and would work great there.

[motoman]

Take a dremmal and cut one welded end of the flange riser. Bend it over and cut off the little spot welds that hold the nut on. Go down to your local Tru-Value or Ace hardware and get new stainless nuts and bolts (6mm). Use bolt and snug tighten nut into place. Spot weld nut in two places. Remove bolt, bend tab back into place, weld and re-install heat shield. Use anti-sieze on bolt threads and U should not have to repeat problem.

[trbig]

Not quite sure what you're saying to do here. It isn't the clamp looking side that's messed up. It's the front one you see in the pic on the right.

I have already ground it down flush with a grinder. I'm trying to get the welder going and will just spot weld a nut on there unless someone knows where to find these clamp style ones.


Tod

[dewibp]

I just replaced a broken nut on my MNS by spot welding one on in (3) places. I was a little concerned about blowing a hole in the exhaust so I took a piece of scrap sheet metal from a car (thin stuff) and practiced making a few spot welds on it. Good thing I did as the first attempt was too hot and I blew a 1/8" hole in the sheet metal!

[skids]

Here is one that JCW sells.

http://www.jcwhitney.com/autoparts/P...014663/c-10111

[skids]

or these
http://www.jcwhitney.com/autoparts/P...014663/c-10111

[mro]

That looks interesting.
When I cut apart my MNS exhaust ... I don't remember there being any heat sheilds

In Tods pic looks like welding a nut there should work.
When I patched a rust hole on the G's muff I did as dewibp and dialed in the mig on a piece of scrap first and that hole was the size of a silver dollar.


mro

[Kurt]

Same thing happened to mine. I just took em off and left em off. Only person who has noticed is the guy I work on it with.

[trbig]

Sorry guys.. I misunderstood the posting a while ago. I thought Skids was talking about a clamp that had the nut built in.. sorta like the one on the left (Rear) of the collector in the pic. It looked like maybe it had been a clamp that had been cut and welded. I just thought this would be something to use instead of welding. No biggie. I left some of the welding material on the pipe to give me something to tack to.


As long as I don't bottom out the screw against the pipe, there shouldn't be any upwards pressure on the welds. It'll just have to hold the shield under vibration.

As for just taking them off... I see them as I walk up to the bike. I didn't have one on the right side at the rally because of this and it's just one of those things that bugged me.

[motoman]

Again, just cut the nut off, weld new one on so it lines up with the hole in the original heat shield. Hardware store has your short stainless bolts to go with the new nuts.(stay with the metric choice, for obious reasons.).

[Pat Kelly]

For those (like me) that don't know how to weld, how about this:

Get a hose clamp that will go around the pipe (but slightly longer). Sandwich the nut under the hose clamp between the pipe and clamp. Drill a hole in the clamp and line that up with the hole in the nut. The clamp holds the nut in place and the screw/bolt holds the heat shield on.