Hux 45 Report post Posted January 6, 2020 Hi team Unfortunately a rear quarter extension in Aus is not as common as the USA nor affordable so had to get an aftermarket (the prices on Ebay for a genuine with shipping from the USA was crazy). As you can see there is a significant difference in profile to the rear quarter (which is original sheet metal and undamaged). The actual difference is @ 10mm which in your would is about 7/16ths of an inch at its worst. So what filler would you think would be a good foundation for such a large build up...fibreglass, carbon or get some of that Muggy Weld type product and build up the actual area with some metal before final filling and shaping with normal Bondo type filler. Thanks in advance Quote Share this post Link to post Share on other sites
mustangstofear 608 Report post Posted January 6, 2020 Depends on what the extension is made of, they were fiberglass or pot metal. If it's fiberglass, then build it up with that. If you have someone that can weld, have them build up the edge. Quote Share this post Link to post Share on other sites
Mach1 Driver 560 Report post Posted January 6, 2020 Its just a little over 3/8, but still a big gap. I've seen JB Weld recommended for 3/16 gaps (half that size). Quote Share this post Link to post Share on other sites
LoneWolf2U 136 Report post Posted January 6, 2020 Just clarifying how does the trunk side fit? From the pic it looks like it is dropping down to the right. maybe relocating the mounting holes may help, need more info. 1 JayEstes reacted to this Quote Share this post Link to post Share on other sites
JET 445 43 Report post Posted January 7, 2020 Get another one, even the inside curve near the tail light looks wrong. 1 JayEstes reacted to this Quote Share this post Link to post Share on other sites
Hux 45 Report post Posted January 8, 2020 On 1/6/2020 at 9:31 PM, mustangstofear said: Depends on what the extension is made of, they were fiberglass or pot metal. If it's fiberglass, then build it up with that. If you have someone that can weld, have them build up the edge. Pot metal. So lead or something like Muggy Weld or the like is the only metal solutions Quote Share this post Link to post Share on other sites
Hux 45 Report post Posted January 8, 2020 On 1/7/2020 at 4:38 AM, Mach1Rider said: Just clarifying how does the trunk side fit? From the pic it looks like it is dropping down to the right. maybe relocating the mounting holes may help, need more info. That is the only area that doesn’t fit well. It aligns well on the upper fender and quarter other than that one area. The inner area looks much the same as the OEM on the RH side. Unfortunately changing it is impossible - none in stock in Aus- we are not as lucky as you folks in the USA as to having large suppliers with lots of stock. Reality is this is a standard Taiwanese repop so imagine its just a flawed moulding design and anyone else using a repop would have the same issue. As the quarter in original I at least have an original line to run from. I’ll try a short strand fibreglass filler I guess. Quote Share this post Link to post Share on other sites
unilec 57 Report post Posted January 8, 2020 Fibreglass does not adhere well to pot metal or any metal for that matter. You can make a cut along the top outer edge and use a block to clamp it where it lines up with the fender lower down and carefully heat it with a map gas torch, bend it out to where it lines up and fill in the cut with muggyweld. Just be very careful when heating pot metal if you decide this is an option. Quote Share this post Link to post Share on other sites
SWPruett 83 Report post Posted January 8, 2020 I would consider using All Metal by U.S. Chemical. It is a metal-fortified filler often used as a lead filler replacement. Hope this helps! 1 mwye0627 reacted to this Quote Share this post Link to post Share on other sites
danno 128 Report post Posted January 8, 2020 I would think fiberglass would work. Test it first. On the inside, sand off all finish, and apply your fiberglass in a test strip. Let it cure and see how well it holds. Maybe drill tiny holes in the metal, something for the fiberglass to grab on to. Maybe put tiny screws in the holes, more for the fiberglass to bond to. Quote Share this post Link to post Share on other sites
mustangstofear 608 Report post Posted January 8, 2020 All you have to do is apply a couple coats of Epoxy primer, then scuff it down the next day with 180 and one coat of Fiber Tech by Overcoat. Then you could finish off with some Rage. Quote Share this post Link to post Share on other sites
Hux 45 Report post Posted January 8, 2020 4 hours ago, mustangstofear said: All you have to do is apply a couple coats of Epoxy primer, then scuff it down the next day with 180 and one coat of Fiber Tech by Overcoat. Then you could finish off with some Rage. I like this version. The cutting and bending of pot metal sounds fraught with hazard :-) I’ll have a look for Fiber Tech and All Metal. Quote Share this post Link to post Share on other sites
Mach1 Driver 560 Report post Posted January 8, 2020 7 hours ago, mustangstofear said: ...and one coat of Fiber Tech by Overcoat... Jeez- try Googling "Fiber Tech by Overcoat", and see what you get. How about Evercoat?? Quote Share this post Link to post Share on other sites
mustangstofear 608 Report post Posted January 8, 2020 Sorry about that, it's Evercoat LOL. Quote Share this post Link to post Share on other sites
Shep69 149 Report post Posted January 8, 2020 I had to do mine as well . Not as bad though. I just keyed up the pot metal and used fibre fill to get the rough shape. Then used rage gold filler or dolphin glaze before epoxy priming . Still looks good after few years in our Aussie climate. Quote Share this post Link to post Share on other sites
mustangstofear 608 Report post Posted January 8, 2020 1 hour ago, Mach1 Driver said: Jeez- try Googling "Fiber Tech by Overcoat", and see what you get. How about Evercoat?? I just did, and found a really nice trenchcoat:) Quote Share this post Link to post Share on other sites
Hux 45 Report post Posted January 9, 2020 12 hours ago, Shep69 said: I had to do mine as well . Not as bad though. I just keyed up the pot metal and used fibre fill to get the rough shape. Then used rage gold filler or dolphin glaze before epoxy priming . Still looks good after few years in our Aussie climate. Thanks Shep - I had a 69 fibreglass version on the LH side that someone had done some very skilful shaping with filler on to replicate a 70 style however it was splitting off the base and is of course damaged at the very bottom like so many others. Quote Share this post Link to post Share on other sites
Shep69 149 Report post Posted January 10, 2020 On 1/9/2020 at 8:47 AM, Hux said: Thanks Shep - I had a 69 fibreglass version on the LH side that someone had done some very skilful shaping with filler on to replicate a 70 style however it was splitting off the base and is of course damaged at the very bottom like so many others. I ended up doing some filling on all four corners . The light buckets were out a few mm as well . But that was normal back in the day . I had to buy a second hand rear extension also as one of the tabs were the thread goes in had snapped. Shipping is what’s a killer plus tax. Quote Share this post Link to post Share on other sites
Vicfreg 773 Report post Posted January 10, 2020 Hey Shep, how are you making out with all of the fires down under? Hopefully none close to family and friends? Quote Share this post Link to post Share on other sites
Shep69 149 Report post Posted January 12, 2020 On 1/11/2020 at 7:21 AM, Vicfreg said: Hey Shep, how are you making out with all of the fires down under? Hopefully none close to family and friends? I’m ok as I live on the West Coast. Most of the fires are on the East Coast. It’s bad real bad. Millions of animals are dead . Some species will become extinct that say. Over 2000 homes destroyed and lots of people have perished. 1 mwye0627 reacted to this Quote Share this post Link to post Share on other sites