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				04-26-2017, 10:53 AM
			
			
			
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			|  | CC Member   
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					Join Date: Sep 2009 Location: Hideaway, Texas, 
						TX Cobra Make, Engine: Backdraft #318, 418 CI, 532 RWHP, Mass Flow Injected, TKO600-Road Race, BMW M3 Suspension, Race Springs (Wouldn't do it again, rough on the street). 
						Posts: 240
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				 Inner Fender Rock Guard Protection? 
 I know this has been discussed to death here as I just went through several threads.  
 But, I need to make a decision on undercoating of some kind for the inner fenders, front and back.  I need protection and sound deadening of small rock/gravel chips being thrown off of super slinging NT01s, especially in the rear, especially in Texas in the summer.
 
 Seems that something durable and softer would be the ticket.  Lots of recommendations for bed liner urethane type coatings, but those will all be pretty hard when cured and I'm not sure I'll get the sound deadening I want.  I have used 3M chip guard coatings on race cars but maybe there is something better.
 
 The noise of rocks hitting inside of the fenders is a miserable sound.
 
 Any experience there really worked well?
 
 Wayne
 
				__________________Wayne Rogers in Hideaway, Texas
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				04-26-2017, 12:51 PM
			
			
			
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					Join Date: Mar 2017 Location: Vermilion,, 
						Oh Cobra Make, Engine: FF 289Comp #8955 
						Posts: 42
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 Look up Body Shutz, a rubberized undercoating that is sprayed on just for that reason.  I think it is a 3M product. It helps prevent star cracks on fiberglass bodies from stone impacts. I plan to put a few coats in the inner wheel well surfaces of my replica. |  
	
		
	
	
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				04-26-2017, 06:01 PM
			
			
			
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					Join Date: Feb 2007 Location: Spring, Texas, 
						TX Cobra Make, Engine: B&B Ford FE from Southern Automotive 
						Posts: 117
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 I have used POR-15 for inner fender protection with great success.  It cures fairly hard so it might not meet your needs but the stuff is bullet proof.  No backside spider cracks or stars so I'm pleased with the results. |  
	
		
	
	
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				04-26-2017, 07:21 PM
			
			
			
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			|  | Senior Club Cobra Member   
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					Join Date: Sep 2002 Location: Montgomery, 
						TX Cobra Make, Engine: CR 427 S/C, 351W, 5 Sp & KMP142 - 427 SO, 4 Spd 
						Posts: 2,212
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 The Kirkhams have a 3/8" foam glued to the fender underside to prevent BBdents from the inside.  That might work in your case.
 
				__________________Flip
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				04-27-2017, 09:36 PM
			
			
			
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					Join Date: Aug 2008 Location: Tahoe/Truckee, 
						ca Cobra Make, Engine: Ford Racing 363/8-stack injection, SPFR0012 
						Posts: 260
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 Out of the box thinking, our Audi Alroads had a Astro Turf like material that was very effective.  
 Mark
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				04-28-2017, 03:43 AM
			
			
			
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			| Senile Club Cobra Member   
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					Join Date: Feb 2001 Location: Buffalo, NY USA, 
						NY Cobra Make, Engine: Superformance 
						Posts: 4,566
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	|    Not Ranked 
 Look at  "Rhino Liner" bedliner. It is a softer, flexible urethane liner. Most bed liners (Line-X) are hard and abrasive, Rhino is a different type of product. Ask for a sample of Rhino and try to tear or cut it! 
				__________________ 
				"I'm high all right, but on the real thing....powerful gasoline and a clean windshield..."
rick@autoventureusa.net |  
	
		
	
	
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				04-28-2017, 04:04 AM
			
			
			
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			|  | Senior Club Cobra Member   
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					Join Date: Dec 2001 Location: Shasta Lake, 
						CA Cobra Make, Engine:  
						Posts: 26,611
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 Several people here have used the Rhino Liner under their fenders and it has worked out great. 
Ron
 
	Quote: 
	
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					Originally Posted by Mark IV  Look at  "Rhino Liner" bedliner. It is a softer, flexible urethane liner. Most bed liners (Line-X) are hard and abrasive, Rhino is a different type of product. Ask for a sample of Rhino and try to tear or cut it! |  |  
	
		
	
	
	
	
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