Any of you guys with the engine up front/under cab......what are you using to keep the heat out? Need some ideas for my engine cover. Thanks!
My engine is behind the cab, under a sleeper, which I think will act like a big resonator/sounding board. I plan to use home made Lizard skin and 3/4" of styrofoam, protected on both sides by 20 gauge sheet metal. If that isn't enough, I'll apply bed liner on the under side. This may seem like crazy overkill, but the Detroit Diesel engine is noted for noise output, and I want to be able to carry on a conversation in the cab at full throttle. (promised my wife, so its got to happen) I've also thought about spray foam in place of the Lizard skin and styrofoam, because it sticks to the panels and should stop any sound vibration along with excellent heat control. Think 3/4" of lizard skin. This is the stuff they use in homes now to seal floor joists and such and a spray kit big enough to do my cab is about $300 In a more conventional situation like yours, I think Lizard Skin, either home made or store bought would be the way to go. maybe even inside and outside. If you have places where you need heat shields, I think this stuff might work well. http://www.oreillyauto.com/site/c/d...ck=Search_N0488_1266656_-1&pt=N0488&ppt=C1984
I worked in the aviation industry for years- check out Aircraft Spruce in Corona CA They have it! Its used all the time especially for composites that are very close to a heat source...
On my truck (avatar) I am sitting on a 12V ***mins diesel. I used dynomat type stuff under the floor and on top of the floor. Then 1/4" high density foam topped with 1/2" carpet insulation then carpet. Have rode in new GM Top Kicks that are more noisey. Very quiet. On a hot day after the truck has been running for several hours with the A/C on the floor feels slightly warm to the touch.
Thanks for the replies. After some searching on the net I found several products that should work. Spendy though. Lizard skin has also been mentioned to me......anybody use that? results?
I think you and I are the only two cab-over-engine Coes here. I will be using dynamat on the inside of the doghouse.
aircraft industry uses a lead "blanket." get some if you know someone around airplanes. Conforms to almost every shape and sticks to anything. Boeing Surplus used to offer it in Seattle, Wash. But They closed. Ask around..
I tested some of the Peel and Seal stuff (similar to Dynamat) using my heat gun and a point and shoot thermometer. Not great......It reflects some heat at less than 100 degrees but at about 160 it starts to melt and turns to goo. Not super scientific, but gives me a general idea. I'm sure that air flowing around the engine is a factor also....
Saw your question and X Aero Painter's comment on Aircraft Spruce, I checked out their site and came across a listing for Koolmat. They make a heat/sound (23 decibels) shield that withstands temperatures up to 1100 degrees (F), additionally they make a foil-gl***-PSA product good to 1200 degrees (F). They recommend using 3M Super Spray Hi-Temp Adhesive. Check out the site at www.koolmat.com , they will send you a brochure and sample at no cost.
Nice topic. I too am going to keep it true to COE so will need the answers. Luckily you guys are ahead of me so I will look to you for results.
If you look at old vans, you will see foil backed insulation mounted inside the doghouse. Perhaps you can use that same idea?
Good post, I'm just about to put a floor in my COE build, & was un-sure what to do about insulating the heat & sound in my cab. Now I have a source to check out. Besides having a heat shield in my floor, I plan on finding a spray foam type insulation to spray in every nick & cranny on the in-side walls & roof of my cab. I'm not sure what to use, but thats my plan. Stay cool & quiet..... O'YEA, Min's a real COE to.
Mines a real COE also, so I'm really interested what you guys come up with. The spray foam seems like a great idea, but i think water leaks would need to totally eliminated….
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