Dynamatting the doors to improve door feel & road noise

[ikonxone]

i had an FJ before the 4Runner and it seemed very noisy when compared. i think the 4runner is very solid and has very little road noise.

 

[adamlong44]

My doors sound ok, could be better, but not worth the effort it would take to correct.
My hood definitely flexes in the 65+mph range, I don't think any matting would correct it though.
Only annoying thing I noticed about noise though was tonight: I was in a moderate to heavy downpour and I could hardly hear my wife. It felt likexwe were in a metal roof barn.

 

[4Funnr]

I have a TE and it sounds pretty solid when I close the doors.

 

[Sonic dB]

I have a TE and it sounds pretty solid when I close the doors.

I concur....and the road noise really isnt that bad at all IMO....

My other car is an older Porsche 911 (993 model) and those doors are solid as hell, like all Porsches used to be... anyway the 4Runner is not like that but still not bad.

the hood flex is there, but I pounded my fist on the hood and it seems as solid as any hood of any car or truck Ive ever had...it seems that the shock mounts under the hood are vibrating it up and down...rather than the hood actually flexing in its metal...

 

[024RunnerSE]

Just go open and close a door on a 1990 Lexus LS400 or a 1990 Toyota Cressida. Yeah, thats the smooth click of the door handle and the steel vault "thunk" sound you want when you shut it.

The secret behind these vehicles slick and attractive sounded doors is the sheet metal is thicker and the protective beams in the doors use some sort of silicone-glue to keep them from flexing or vibrating when shut. The doors also use a unique sealing setup. You got the gasket around the door and then you got a secondary gasket on the car's chassis itself.

Since the last generation Cressida and the first generation LS400 share the same door handles, they both use a very thick casted steel design. It's not your normal stamped steel or plastic handles. The rest of the linkage is pretty much the same, so the damping is from the door handle itself.

My recommendation is to use this stuff:

I've used it when doing motor swaps and sound deadening around my speakers and stuff. It works great, but it gets expensive if you want the best sound deadening. I'd recommend spraying this stuff inside your doors because you know you will hit every single seam and crevasse inside the door for proper sound insulation. As for the floor board, if you really really want a damn good sound insulation, I recommend you tear out your interior and Line-X it or something similar. Hands down, the best sound deadening ever.

 

[fins]

i had an FJ before the 4Runner and it seemed very noisy when compared. i think the 4runner is very solid and has very little road noise.

++1 :boink:

 

[VT4runnin]

Any other Limited/SR5 owners get the sheet metal on the hood wrinkling/flexing when going fast or into the wind? I'm wondering if some dynamax on the inside of the hood under the insulation would fix that? Something to stiffen it up.:whip2:

I take my car to a touchless car wash across the street. When the air blower begins to dry the car, it looks like my hood is about to crumble. I'm always worried I'm going to leave with a huge dent in it from the air pressure. I'd love to figure out how to strengthen the hood.

 

[BrianLSU]

Mine does sound "tinny" if another door or window is open and I close it. Otherwise mine sounds pretty good too. Same as the last Gen. 4Runner.They have round bars , about an inch in diameter in the doors for side impact protection. In the old days , the sheet metal on the doors was alot thicker and served as the protection.

Girlfriend and I test drove a new GX460 last week and it sounded the same way when another door was open.Maybe a little better.She would'nt buy it!!!I tried though.
Nowhere near that vault door sound of a german sports car for sure.

Maybe it has something to do with comparables. My Rubicon was basically a frame, Dana 44's, sheet metal and a soft top. And to think I paid $30K for it in 2005.....wow, what was I thinking. Now those GX's, I really wanted that too. Just couldn't see how to justify another 20K over a loaded Limited 4Runner also the new style still looks like a grocery getter. But those damn Lexus vehicles are like Toyota's in a tux, so nice.

I take my car to a touchless car wash across the street. When the air blower begins to dry the car, it looks like my hood is about to crumble. I'm always worried I'm going to leave with a huge dent in it from the air pressure. I'd love to figure out how to strengthen the hood.

I've lived with this for 5 years, the Jeep was much worse though. I keep waiting for it to hit the windshield at any second. It has to be a cost savings move, with the crumple zones moved to the sides, the hood doesn't have to be reinforced. Oh, well.

 

[howieb]

I have used second skin on one of my Corvettes. It works, they have several products that can be used, one for vibration and another for air-bound noises. Takes time and patience and it is not a silver bullet but it will help.