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Old 04-15-2007, 03:19 PM
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bondo will just crack up from the pressure/vibrations and youll never get the smell of the fiberglass outta your car, so bad
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Old 04-15-2007, 05:07 PM
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So, what exactly is the problem? Is it interior panels rattling while you listen? or is it rattling outside?

if it's inside panels, then you should looking into ways of applying pressure to the panels, maybe some form of light, soft, foam batting, like fluff or something to fill the spaces and cause pressure between the "frame" of your trunk and the panels that snap/screw onto this "frame".

If it's outside, then you should try some extra weather stripping on top of your oem stripping and/or adjusting your trunk latching system that is pulls the trunk down tighter into the oem seals.

I've used spray foam for these types of problems, but you have to be extremely careful using it and be sure to get the low density stuff that it doesn't break panels.
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Old 04-16-2007, 03:06 PM
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Our Ford Probe used to rattle pretty bad with the 15s in it. What I did was I removed all the rear panels and carpeted the back of them with trunk liner. After I put them back in, the carpet kept them from rattling on the metal and eachother. Worked for me and it was cheap enuf.
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Old 04-16-2007, 04:29 PM
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yeah i was thinking that if you took out the plastic and put dynamat on it then put it back in then it would hep stop it from rattling, also when you did the hatch did it cut down on the exhaust note, cuz i have to run a silencer in my muffler just to keep me sane from the loud exhaust.
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Old 04-16-2007, 04:43 PM
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You're never going to stop the rattles once they start

Not sure that fibreglass is the way to go but what would be the plan if you needed access? Are the panels going to be removable? What if you get into a car accident? Insurance will not pay to re-do the interior in that fashion and you'll have to do it all over again...
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Old 04-17-2007, 04:19 PM
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Just to add my experiences if it helps, as I had a beloved '89 Probe (old, dear Matilda...):

- Spray foam works nicely in certain applications (think nooks, crannies and panel spaces) and it's not too expensive

- Ashphalt spray/undercoater works in some ways too. It may smell though. It adds weight which can help with flimsy plastic panels

- Try high tack/industrial contact cement and rubber matting. Much cheaper than Dynamat (etc. brands) and can be pretty effective if done right.

- As above, rubber or butly stripping (bike tires?) can be wedged, fitted, stretched (etc.) in between rattling parts

- I have heard of concrete being poured as a base. Pretty much an SPL thing. I don't think I need to go into details on this pretty much makes fun of itself...

Good luck on the "rattle hunting". Let us know how you make out.
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Old 02-08-2008, 04:05 PM
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hmmm, I know exactly what you are talking about. I have a 2nd gen probe myself, and all parts rattle like its their full time job. I dont even have a sub in yet. Anyways, I say bad Idea. Fiberglass is actualy pretty complicated, and will take alot of skill for a large piece like that. Not to mention, it will have ot be done outside the car, otherwise your car is gunna wreak. Also, by permanetly making something like this you are blocking access. I would say, make a mold outside of the car, and have it in sections, so you can take it apart/out if neccessary. But then you are dealing with gaps. Avoid bondo bc it will look like poop.
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