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Thread: Rattling heat shield fix. Reply to Thread
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Topic Review (Newest First)
12-10-2012 08:22 PM
ChrisRobin Along the same lines... how many heat shields are there that can start rattling?:

My header shield is solid as well as the one on top of the cat (held down by hose clamps). There's also the cat bracket but last I checked on mine, the hose clamp there is still solid.

What about the one near where the flex pipe bolts to? Does that one ever start rattling?
12-09-2012 10:39 PM
spiritvector
Correction on heat shield fastener size

Just chased this problem down this weekend - the fasteners for the header heat shield are hex-flange head, M5 x 0.8 thread, 10mm long.
09-12-2012 02:42 PM
qdenning Nice work!!
09-11-2012 01:25 PM
swansong Gonna bump this, 'cuz I really want to do it, but I cannot for the life of me find the right size replacement bolts. Correct me if I'm wrong, but I'm looking for "6 metric bolts 10mm head 5mm thread size", as in M10 x 1.25(?) x 5mm bolts right? I can't find a 10mm bolt with that short of a thread. I can't reuse the existing bolts because they are no longer 10mm due to rust, and I'll likely have to get "creative" when removing them.

I'm tempted to just wrap the header at this point, but I'm sure those bolts will be just as bad, if not worse, than these heat shield bolts...

In any case, my embarrassingly loud rattley heat shield must be fixed.
07-19-2012 02:15 PM
Ralliman
Quote:
Originally Posted by JBotone View Post
I was able to get all of them but the one on the far left. The aluminum bracket got in the way, I cussed and yelled for about an hour before I gave up. With the other 3 on the underside it holds nicely. The one on the far right should move enough to get it in position, you have to take your time and be careful but it's not too difficult. I slid the bolt from the back side, and it's close enough to sit it on the manifold. Lift the shield and keep it from knocking the washer off as you move it back.

I've got the washers (reusing the original bolts since Lowe's didn't have 10mm/5mm bolts), so I'll give it another try soon. I did find the source of my rattle-the shield's rusted away around the bottom bolts. I got the washers in place on both sides, locked down the top bolts with washers on the outside, and the rattle is completely gone!
07-19-2012 01:40 PM
JBotone
Quote:
Originally Posted by Ralliman View Post
Awesome idea, but how did you get the heat shield moved enough to get washers under the outer two bolt holes? I've got mine moving, but it hits the fans and won't come out far enough to really get anything under the outer holes.
I was able to get all of them but the one on the far left. The aluminum bracket got in the way, I cussed and yelled for about an hour before I gave up. With the other 3 on the underside it holds nicely. The one on the far right should move enough to get it in position, you have to take your time and be careful but it's not too difficult. I slid the bolt from the back side, and it's close enough to sit it on the manifold. Lift the shield and keep it from knocking the washer off as you move it back.

07-19-2012 12:28 PM
Ralliman Awesome idea, but how did you get the heat shield moved enough to get washers under the outer two bolt holes? I've got mine moving, but it hits the fans and won't come out far enough to really get anything under the outer holes.
05-27-2012 09:40 PM
bbcobra thats funny, I just did this to mine yesterday. I was putting a new valve cover gasket on it and decided to find my exhaust rattles. As it turns out the main source was the cat bracket. It was broke. Now I need to get a bracket for it. Sure is nice driving around without that anoying rattling going on on take off.
05-25-2012 07:12 AM
Dads03SVT I had thought of buying a new shield but heard they were pricey. Would like a ceramic coated header for looks but was told they don't hold back much heat. Header wrap is probably alright just makes it look like a mummy....LOL I have no cat since we don't have emissions here.
05-24-2012 11:05 PM
JBotone
Quote:
Originally Posted by Dads03SVT View Post
Mine rattles but mine is split ...well cracked...don't think the washers would help.
Depends on where it's cracked if it's loose around the bolts like mine was, it may help a little, but the crack might lead me to a new shield, or do what others have done, and wrap the header. I would like to do that, just for the ease of access to the lower hose, and PCV. But my cat bolts that go to the header are so rusted, I don't think I can get it off unless I go to a shop.
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