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Old 11-30-2012, 02:40 PM   #61 (permalink)
Bear9350
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Quote:
Originally Posted by RobertWJacobson View Post
Again depending on how thick the wood and metal are the Great stuff would make them bow out from each other when it is expanding.
Great stuff and similar foams will not harden inside a wall like this.
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Old 11-30-2012, 02:47 PM   #62 (permalink)
RobertWJacobson
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Why won't the foam harden inside the void? Is it because of the materials? Why would it be different than inside of a normal sheetrock wall void?
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Old 11-30-2012, 03:25 PM   #63 (permalink)
Bear9350
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Idk, I was helping a buddy with an ice fishing shack. We thought we could fill a wall with it for insulation. It didn't harden. Tried two walls and several cans, same thing. I think it is just to large of an area and it can't cure or dry or whatever it needs to do because the middle is sealed by the foam around it.
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Old 12-07-2012, 09:23 AM   #64 (permalink)
thompsonracing
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The original post is very informative, thank you!

I insulated the entire cabin of my truck with spray foam. The foam set right up, no problems. I filled all of the pillars, roof ribs, nooks, crannies, etc.

I then laid one layer of Dyamat on the floors, inside the doors, pillars, sides, and the roof. I added one layer of Dyanpad on the floor. Made a huge difference in sound inside the cabin. if you tap the outside of the doors, or any part of the cab, it sounds like wood, solid, dense. I have a 13" JLW7 and it pushes the glass out.

It took me two weeks with a buddy who does interiors, at night. I figure it was over 150 man hours of work.
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Old 12-07-2012, 09:24 AM   #65 (permalink)
thompsonracing
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If spray foam does not setup, spritz with a little water.
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Old 12-07-2012, 11:34 AM   #66 (permalink)
raamaudio
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I can quite easily identify 150 hours of labor for what you did, been there, done that, more than once, even more hours than that, more than once

Using spray foam has some issued to be very careful about, some cannot be seen.

1) Pockets can be created that can collect condensation resulting in rust eventually.

2) I have seen a brand new $30k car have $10k in repairs due to over expanding foam, they nearly had to scrap the car, it was not covered by insurance.

When I use expanding foam I use Pur Fil by Todal, made in Germany, expensive and not really fun to use product.

You have to mask everything possible and then watch for little critters that will grow out of the tiniest seam in the middle of the night and get on the paint, permanently effecting it. When applying it you have to work in sections then go back and fill in the next day, larger areas might have to be done in 3-4 sessions. Access holes have to be drilled in some places, water misted into the voids helps it expand properly, how much to use is critical.......

I did my audio comp truck with it and swore I would never do it again but 14 years later, 196k miles, it is still solid as a rock and zero rust even after a winter in NoCal, OR and on the 7th winter in Utah.

But, lesson not learned, we used 360 liquid oz in the next project, audio comp/demo/street/race car build. This took two of us very long days for 7 days straight to do it all. The car ended up so solid it felt caged before we caged it. It also won audio comps and did quite well in Solo and Time Trial events. 2,000 plus hours of development time can yield some great results when done right

On my current build I simply do not have the time to fill all the voids with foam so I am placing sections of acoustical foam into the voids then sealing up all the holes I can with mat and then Ensolite foam over them. I am also adding mat and foam to the back side of all pillar trim sections as I can, needed, etc....it will be quite effective as I have done this on many other vehicles.

For those without the time or desire to use expanding foam this is a pretty simple way to have nearly the same noise reduction effect. The only loss is the more solid structure good expanding foam can provide(Pur Fill is structural so really stiffens things up)

----------
As for the rest of the deadening.

Dynamat is quite good, the gold standard in deadening, just to much money for us DIY guys as there are other products on the market for far less money.

As mentioned, sealing up the doors by covering the huge access holes is a must do item in my book as it reduces road noise, stiffens up the air space for more accurate reproduction, reduces resonances into the door panel, etc......if you have not done this you may want to give it a try.

Also lining all you can with a product to reduce reflections helps a great deal, why cloths is actually quieter than a leather interior but leather is so nice, gotta have it(except in an all out audio comp install, I use all the cloth and carpet I can and just enough other stuff for some style)

Have a great day and excellent weekend
Rick
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Old 12-08-2012, 09:40 PM   #67 (permalink)
FASTOYS
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I bought some Raamat (sp?) and Ensolite foam from Raamaudio and it works really good. Very knowledgable guy and helped me w/install ???s.. Much cheaper than other brands out there and i actually think it is thicker/better stuff.. This job definetly takes alot of time but the end result is worth it... I cant wait to get time to do the doors, then it will all come full circle! : )
Thanks again for the help Rick!!

Jeff
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Old 12-11-2012, 05:53 AM   #68 (permalink)
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It would be awesome to see some pictures!

Thanks...
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Old 12-18-2012, 09:42 AM   #69 (permalink)
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i didnt take any pics as i have seen many on here and they all pretty much look the same.....
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Current truck: "Way F.A.S.T. Whitey" 2006 LBZ CC/SB 4x4 Summit White, Banks Superscoop intake, 4" Magnaflow, ASD downpipe, 3" Hotside pipe, Suncoast/Precision, BD Flowmax lift pump, EFI Live by ATP w/dsp5, Wicked stg3 CP3, Profab EGR delete & ProTow up pipes, LML manifold, pvc reroute, Hi/low/fog/daytime lamps all on mod, hoodlight/glovebox light (off my 2002), Bilstiens, Air bags, 265/75/16.
12.76 @105 mph 1.78 60ft W/PPE HOT+2 ET 5-26-07

608 HP/1321 Trq @ floor it diesel ALL W/STOCK TURBO AND EFI ! 10-7-12

12.39 @ 107.93mph 1.71 60ft.. 7.85 @ 86.81mph 1/8mi W/EFI 11-2-12
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Old 12-18-2012, 05:19 PM   #70 (permalink)
thompsonracing
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Quote:
Originally Posted by raamaudio View Post
I can quite easily identify 150 hours of labor for what you did, been there, done that, more than once, even more hours than that, more than once

Using spray foam has some issued to be very careful about, some cannot be seen.

1) Pockets can be created that can collect condensation resulting in rust eventually.

2) I have seen a brand new $30k car have $10k in repairs due to over expanding foam, they nearly had to scrap the car, it was not covered by insurance.


You have to mask everything possible and then watch for little critters that will grow out of the tiniest seam in the middle of the night and get on the paint, permanently effecting it. When applying it you have to work in sections then go back and fill in the next day, larger areas might have to be done in 3-4 sessions. Access holes have to be drilled in some places, water misted into the voids helps it expand properly, how much to use is critical.......

I did my audio comp truck with it and swore I would never do it again but 14 years later, 196k miles, it is still solid as a rock and zero rust even after a winter in NoCal, OR and on the 7th winter in Utah.

This took two of us very long days for 7 days straight to do it all. The car ended up so solid it felt caged before we caged it. It also won audio comps and did quite well in Solo and Time Trial events. 2,000 plus hours of development time can yield some great results when done right



Have a great day and excellent weekend
Rick
Exactly what we did! I got the foam from a buddy who does interiors. It took a long time like you said cause we taped all the holes and did one section at a time, leaving one end hole open to relieve pressure, but assuring a full fill. If you tap the cab, anywhere, it sounds like solid wood. If you tap the bed, it pings like sheet metal. The foam made a huge difference!

It's been two years and no issues. Truck doesn't get abused, so no rust issues.
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