Under Side of Fender Coating Suggestions

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   I have both my 69 Rambler fenders off as I had a thorough blasting and repainting on my engine bay. Instead of putting my fenders back on with some surface rust and some remaining factory undercoating on the inner side, I thought I would have them both media blasted and primed to start.  Once I finish the remaining splash shield replacements (almost done) I want to get the fenders back on.  I will repaint the entire car after I get my 360 engine installed within the next 60 days or so but will probably drive it for a while with the fenders still only in the primed condition. 
Is there a product that anyone has used or recommends to replace that undercoating on my fenders once I blast them and remove all the remaining undercoating and surface rust?

Edited by LakesideRamblin - Dec/01/2016 at 12:30am

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
LakesideRamblin Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Dec/21/2015 Location: So. California Status: Offline Points: 2692	Post Options Post Reply Quote LakesideRamblin Report Post Thanks(0) Quote Reply Topic: Under Side of Fender Coating Suggestions Posted: Nov/30/2016 at 5:54pm
	I have both my 69 Rambler fenders off as I had a thorough blasting and repainting on my engine bay. Instead of putting my fenders back on with some surface rust and some remaining factory undercoating on the inner side, I thought I would have them both media blasted and primed to start. Once I finish the remaining splash shield replacements (almost done) I want to get the fenders back on. I will repaint the entire car after I get my 360 engine installed within the next 60 days or so but will probably drive it for a while with the fenders still only in the primed condition. Is there a product that anyone has used or recommends to replace that undercoating on my fenders once I blast them and remove all the remaining undercoating and surface rust? Edited by LakesideRamblin - Dec/01/2016 at 12:30am
	LakesideRamblin 69 Rambler 360 73 Javelin 360 "If you could kick the person in the pants responsible for most of your trouble, you wouldn't sit for a month." T. Roosevelt

hassyfoto Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Nov/16/2009 Location: Maryland Status: Offline Points: 3378	Post Options Post Reply Quote hassyfoto Report Post Thanks(1) Quote Reply Posted: Nov/30/2016 at 10:03pm
	There are numerous things you can do, 1. Gravel guard ( used on the bottom of many cars since the 80's), usually this is applied to the lower sections of vehicles and the color of the car is sprayed over the gravel guard. Clear plastic decals placed on vehicles after painting & the combination of black plastic rocker moldings and lower bumper appliques has been replacing gravel guard on modern cars. Gravel guard has several different names depending on the vendor, but most professional auto repair supply vendors know exactly what product(s) you may be referring about. 2. Undercoat has come a long way recently, a little research on using a product that does not have or collect moisture is the better product. Don't discard using undercoat again, the products of yesteryear held moisture and caused rust vs. many modern day undercoats that are far superior. 3. Bed-liner material has become very popular in the last few years with the ease of obtaining do-it-yourself kits from many vendors and stores. Again, a little research on product quality is prudent. I have used both gravel guard and bed-liner material within the last year on the underside of fenders and the rear wheel wells on restorations. I have used undercoat for certain touch up applications.
	Murphy's Law: Any given mechanical job you decide to solve alone will imminently require a third hand, at its most critical moment

TX390AMX Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Dec/27/2012 Location: Indiana Status: Offline Points: 803	Post Options Post Reply Quote TX390AMX Report Post Thanks(1) Quote Reply Posted: Dec/03/2016 at 11:45am
	Many years ago we coated the inside of the fenders on my wife's 72 Jav with a mixture of mobile home roof coating mixed with a can of STP. Applied with a throwaway brush, very sticky and dripped on the driveway every summer for years, but absolutely no rust! And this was in Indiana, a real rust belt state. Fast forward to now, modern materials and availability, I'd go with rattle can 3M undercoating or something similar. The RockGuard products are great also, just more expensive, as is the truck bed liner. Any of them will outlast the rest of the car, pick the cheapest and easiest to apply.
	Terry 68 AMX 390 4 Sp Rally Green 68 AMX 390 4 Sp Matador Red 68 AMX 390 4 Sp Calcutta Russet 56 Chevy Sedan Delivery 2016 Can AM Spyder 55 Chev pickup