How are manufacturers and individuals handling cat shield rattle?

Run a flat file over the edges to knock down, or even put a small radius on the laser cut edges, problem solved.

Posted via the PriusChat mobile app.

 

Feedback to Miller Cat manufacturer might lead to them doing this.

 

I have one on my car, no rattle, even made a video. If there is a rattle it's due to improper installation.

even wrote an article on my blog about it. ====> Cat Shield™ by MillerCAT is installed on my 2013 Toyota Prius - black_jmyntrn

 

Thanks for that. Would be worthwhile to hit all the drilled holes with something like Fluid Film? Maybe do the same to all riv-nuts and fasteners too.

 

Not really. I've installed a Gen 2, Gen 3, and Gen 4 Miller Cat shield(I need to post the Gen 2 and Gen 4, I have had technical issues lately), with each of them having no rattle. If an installer didn't install one riv-nut properly and the rattle "could" happen, the install would have to be botched for it to rattle. They even include foam strips that are strategically placed.

The thought of "the rough edge is likely to quickly"saw" through the paint and into the steel substrate and expose it to rust." is plausible but a reach IMO. I mean, if someone didn't have a lift and installed the shield laying on their back, I could definitely see an improper installation happening.

 

Hmm in that video the three 'fins' are supposed to be bent downwards at a 45 degree angle. Someone F'ed up on the install.

 

One little trick to cut down on rattling and loose rivet installation when installing that kind of cat shield.
Of course for proper installation is key number one. But like we do in helicopters when you’re riveting together any of the body panels with rivets.

Apply epoxy to your rivets when installing brush a thin coat of epoxy over the head of the rivet just like an aircraft or helicopters.

Because of the extreme vibration that aircraft go through and temperature changes expansion and contraction rivets have a tendency to loosen up. This is why it’s aircraft industry standard to do a epoxy coating on installation of rivets.

 

I just had my shield installed on my Prius C 2011 . There is a noticeable rattle now, kind of annoying but should I be concerned about the noise or just leave it be?

 

You should go back and tell them it rattles, and to please fix it so it doesn't rattle.

 

thanks, I’m going back . I looked under and noticed not all the bolts were put in compared to the images on the website. I’m not happy!

 

Properly installed Sheilds do not rattle

 

The manufacture is not Toyota and other than protecting your cat from getting swiped, not certain they are bothered.
Can rectify the issue "if" you have one, by placing some, also from Amazon, yes I know I have an issue lol, Aluminum Heat Shield Protection with Fiberglass and Self-Adhesive Backing Heat Barrier 2 Sq Feet (12x24 Inch) , cut and place it on the shield and sandwich it next to the cat or what ever else may be rubbing on the guard.Acts like a cushion. Helps if you dimple the guard at the contact point first and if the issue remains, then install the heat barrier material. Dependent on how your cat and it's piping was made by Toyota, it may all be generic but not all cats collide with the shield.
Seriously it's not "Miller" as the manufactures problem, it's the person who installed the shield and their lack of incite to see a possible issue and do nothing to rectify it.
Personally I use the Cat Security/ cat guard variant, my cat rubbed on that too initially.

Oh and forget the rivets, nice in theory, but they may cause vibration too, best to riv nut the thing on and use security screw in fasteners.

 

I went back another time and it was still making bad noises. Finally they found they forgot a part, which I suspected the whole time.