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QuietCoat Sound Dampening

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Old 07-13-03, 08:07 PM
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I achieved 6dBA from the original starting point. See spreadsheet above. I too am looking forward to the results of the undercoating.
Old 07-14-03, 10:56 AM
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That is AWESOME. I am impressed.

Great write up! Definitely should be archived....
Old 07-15-03, 01:45 AM
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My FD seems louder every time I read this thread!

David, I know it's early, but have you noticed any bad/objectionable effects? For example, does the stuff smell bad after curing, or did the flesh fall off your fingers after painting the stuff on?
Old 07-15-03, 05:45 AM
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I'd answer, but I no longer have feeling in my fingers and I've grown a twin out of my head!

Okay, on the serious side, no, there have been no objectionable effects to date. The material doesn't smell bad when applying. It has a slight chemical smell, but it's hardly noticable. Doesn't even give you a buzz when using - bummer. So, so far, it's a very good product.

I'm off this morning to take the car to Auto Preservation to have the underbody sound proofing completed. I anticipate getting the car back tomorrow so I'll let you know how it goes.
Old 07-15-03, 01:54 PM
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Not sure if you addressed this, but are you going to do the wheel wells? What about the inside of the hatch? Any chance you'll take out the headliner and do that?
Old 07-15-03, 04:10 PM
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Yes, I'm doing the wheel wells. I've already done the "lip" on the inside of the hatch in phase one. I probably won't do the headliner unless I don't get the results I'm after.

The car is currently in the shop for coating of:

- underbody
- wheel wells
- transmission case
- oil pan
Old 07-16-03, 07:33 PM
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Update:

The auto shop to which I took the car didn't do the job so I have to find a new place to have the undercoating done. I've contacted several shops and hope to take the car in soon but this won't happen until next week.

Will keep you posted!
Old 07-18-03, 05:33 AM
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On my way to Pettit Racing to have the car tuned. Will start again next week on the sound dampening project.
Old 07-18-03, 08:39 AM
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Originally posted by David Hayes
Artowar - the recommended number of coats is three.
And three is the number of the coating. Thou shall not count to two unless followed by one and directly proceeding to three. Thou shalt not count to four, nor five; six is right out...
Old 07-19-03, 09:54 AM
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dgeesaman - all righty then....

UPDATE - I took my car to Pettit Racing to have it checked out. See my sig for mods - car should be bitchin but it's not. Many things installed wrong by the shop that performed the work in Jacskonville FL. Soo..Pettit now has the car and it's going to be a week or two before I get it back. Had to rent a car to get back to Jacksonville.

Trying not to be pissed!
Old 07-23-03, 06:54 AM
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No update yet.
Old 07-23-03, 10:37 AM
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What day are you getting the car back from Pettit?!
Old 07-23-03, 08:44 PM
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Don't know just yet. It depends on the when the parts show up. My guess would be a week from Friday. Should be all good though. Pettit states they'll give me 320-330 reliable RWHP at 10 PSI and 400 reliable if I run race gas and race spark plugs. Sounds good to me!
Old 07-25-03, 03:40 PM
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just out of interest have you noticed a reduction in rattles etc?? i notice a lot or rattles coming from the rear of my car and just wondering if it would help with these, or have you not taken it out yet??
Old 07-26-03, 09:13 AM
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Don't know that I've eliminated any rattles with this. I'm pretty **** about rattles and have always tried to track them down. So, I don't think you should look to Quiet Coat to eliminate this problem. I did notice because it's more quiet,mit is easier to loacte the source of rattles.

As a quick update, should have my car back next week from Pettit. Cameron Worth, the owner, is IMO, the Southeastern rotary "god". He's well on his way to fixing my performance issues. Will be nice to be fast and quiet!
Old 07-26-03, 02:46 PM
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Originally posted by David Hayes
Will be nice to be fast and quiet!
It's called stealth Like the SR-71 blackbird. Mmmm, supersonic.
Old 07-26-03, 05:26 PM
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I'm sold on QuietCoat, but just as I was about to order I found something similar, Item# 9545T1:
http://www.mcmaster.com/catalog/109/html/3240.html
Vibration Damping Compound
Brush, spray, or trowel on this water-based elastomer to control vibration on metal surfaces such as air conditioning units, ducting, machinery housings, metal cabinets, piping, aircraft components, and auto components. Compound is fire retardant and chemically resistant to most acids, alkalies, and solvents. It air dries within 3 to 4 hours leaving a tough and flexible finish. Temperature range is -20° to +120° F. Color is beige.

5-gal. Pail 270 sq. ft. 9545T1 $68.85
The price is very tempting, does anyone have any experience with this?

Thanks, Bob
Old 07-26-03, 09:03 PM
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Sounds a lot like Quiet Coat. Why not call the distributor and ask them to compare versus Quiet Coat? Or how about calling Quiet Coat and asking them? At $70, it's about 1/3 the cost so if it's the same stuff, quite a bargain.
Old 07-29-03, 12:11 PM
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Bob,

This (refering to the McMaster damping product) is an old rubber-based coating. I have seen some people write about using it because it is really cheap, but there are NO results anywhere that I can find, and certainly no loss factors. These have been around for years. Usually you have to put them on very thick to get much effect. Our product works by absorbing vehicle body vibration, which means engine and road noise can be reduced by up to 20dB, depending on vehicle and application. This is no cheap undercoating of rubber or elastomer. This is a high-tech highly engineered polymer which will exceed your expectations.

Please let me know if I can be of further assistance.

Thanks,
Daniel Gonzales
Quiet Solution, Inc.
3685 Enochs Street
Santa Clara, CA 95051
Tel: 408.523.4000
Fax: 408.715.2560
Think I'll be going with the QuietCoat
Old 07-29-03, 06:26 PM
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Sounds like you have your answer. Daniel is a pretty good guy - I've spoken with him on several occassions in the past.
Old 08-01-03, 11:42 AM
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Quick update - my car should be back from Pettit Racing no later than two weeks from today. Unfortunately Pettit found multiple problems with the recent work (see sig for mods) I had done at a shop in Jax FL. So, my setup will change but I'll have a reliable car that makes very good RWHP.

What does this mean to the sound proofing project? I'm still committed to finishing the third phase of the job, the underbody of the car, but I'm going to have to take new base readings before the third phase. Using these numbers, I'll still be able to determine the overall effect of sound proofing the undercarriage of the car.

Will keep you posted!
Old 08-12-03, 08:11 PM
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FYI - should know more this week about when I'll get my car back. Then, it's on to the final phase of the project!
Old 08-15-03, 05:32 AM
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Pettit has the car back up and running. Will pick it up mid next week and then move on to the final phase of the sound dampening project.

Question - how many of you are still interested in me posting the results of the undercoating phase?
Old 08-15-03, 09:21 AM
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mmmmmmmmmeeeeeee!
Old 08-15-03, 12:06 PM
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Excellent job BTW, very scientific. Good data! I know its kinda late to ask, but do you know the weight lb/gal of this stuff?


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