I am taping up the edges and around the openings on my roadster body, prepping for undercoating.
Quick question, do I need to scuff the body, before coating?
I am using the Herculiner kit.
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I am taping up the edges and around the openings on my roadster body, prepping for undercoating.
Quick question, do I need to scuff the body, before coating?
I am using the Herculiner kit.
20th Anniversary Mk IV, A50XS Coyote, TKO 600, Trunk Drop Box, Trunk Battery Box, Cubby Hole, Seat Heaters, Radiator hanger and shroud.
I pretty much followed the instructions on the Herculiner can. If I remember correctly it wants you to scuff with 40 grit and then use Xylene to wipe it all down before application. I used 60 grit sand paper in my palm sander and went over pretty much everything. It is sticky stuff.
2nd MK4 #10639 received 3-19-23. Wife's version. Street Snake - IRS, Willwoods, no roll bars, no hood scoop, no stripes, Blue Print EFI 306 with AOD trans, and under car exhaust. Ford Eruption Green with saddle leather interior.
1st build - Mk4 Roadster #9319, received 4-10-18. IL registration 8/6/19. Moser 8.8. 3 Link. Wilwood brakes. Blue Print 427, Holley 750, TKO 600, 0.64 OD. Paint Dec 2020. Ruby Red with Carbon Flash Black metallic stripes.
You'll want to stay a couple of inches from the edges in any areas that your painter will be doing body work -- wheel wells in particular.
My Build Thread: http://thefactoryfiveforum.com/showt...ter-Build-9754
(Most viewed Roadster build thread on this forum!)
Delivered: 6/17/2017
First Start: 12/30/2017
Completed: 12/7/2019
Legal: 1/30/2020
Member of the Mile-Hi Cobra Club
Dave's Cobra YouTube Channel: https://www.youtube.com/channel/UCbk...npK1UZHj4R-bYQ
Agora 1:8 Scale Cobra Build: https://thefactoryfiveforum.com/show...l-Build-Thread
Just knock off any loose stuff and as Papa Dave said please stay back a couple of inches from openings, especially the wheelwells. I've used both Herculiner and Duplicolor Bed Armor. Bed Armor is my preference because cleans up with soap & water whereas Herculiner requires Xylene. Once they're cured you really can't tell the difference. Next one I have to do (I'd be perfectly happy to never do another) will get spray on undercoating.
Jeff
Thanks for the tips and advise. I will put some paper on my DA and go to work.
20th Anniversary Mk IV, A50XS Coyote, TKO 600, Trunk Drop Box, Trunk Battery Box, Cubby Hole, Seat Heaters, Radiator hanger and shroud.
Have you looked at the underside of the body? It's already ruff, it's unfinished fiberglass. There is no chance the undercoat will come off. I hit mine with an air hose to blow off the dust, then coated it. It's not coming off, unless you grind it off.
I just rolled the body over and rolled the Herculiner on.....undercoat3.jpgundercoat2.jpgundercoat1.jpg
Used painters tape to keep it away from the edges.
Ray
I'm not getting gray, I'm adding chrome....
“Under-steer is when you hit the wall with the front of the car and over-steer is when you hit the wall with the rear of the car. Horsepower is how fast you hit the wall and torque is how far you take the wall with you.”
-- Jacques Schnauzee "World Famous Racecar Driver"
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower."--Mark Donohue
Those pics look familiar. I have just about everything taped up. I might have come off the edge a little more than what is pictured, wider tape.
I have not had a chance to sand anything. I am comfortable, having it dry and clean.
Thanks,
20th Anniversary Mk IV, A50XS Coyote, TKO 600, Trunk Drop Box, Trunk Battery Box, Cubby Hole, Seat Heaters, Radiator hanger and shroud.
I plan on driving in gel coat probably a couple of years. I hope to have Jeff Kleiner do the body and paint. He won't be happy with me, I finished undercoating with Duplicolor bed armor 2-3 weeks ago and did it up to all edges. I guess I'm in trouble.
JR
Mk4 complete kit #9059 ordered 1/19/17 delivered 3/23/17, 2015 IRS, Fortes/DART347,TKO 600, hyd clutch, P/S, 12.88 wilwood brakes front and rear, heater/defrost and vintage gauges
First start and go-cart 4/11/18. Taken To Whitby Motorcars Greensboro, N.C. 2/5/21 for body/paint
Can either the Duplicolor or Herculiner be tinted or painted after it’s cured?
I don't know the direct answer to your question. But if you want something other than black (obviously sounds like you do...) take a look at the U-POL Raptor products. They have a tintable version with many colors offered. It's a 2-part spray on urethane product that I just finished using in my Coupe build. My use was just the standard black. But I'm very impressed with the product and the results are much better looking and far more durable than either Duplicolor or Herculiner. They also have a brush on version, but can't give any details or recommendation since mine was sprayed. My post with details here: https://thefactoryfiveforum.com/show...l=1#post382132.
Last edited by edwardb; 09-26-2019 at 10:09 PM.
Build 1: Mk3 Roadster #5125. Sold 11/08/2014. Build 2: Mk4 Roadster #7750. Sold 04/10/2017. Build Thread
Build 3: Mk4 Roadster 20th Anniversary #8674. Sold 09/07/2020. Build Thread and Video. Build 4: Gen 3 Type 65 Coupe #59. Gen 3 Coyote. Legal 03/04/2020. Build Thread and Video
Build 5: 35 Hot Rod Truck #138. LS3 and 4L65E auto. Rcvd 01/05/2021. Legal 04/20/2023. Build Thread. Sold 11/9/2023.
I finished the under coating on the body yesterday. A few tips, for using Herculiner. I did not sand the bottom of the fiberglass. I do not feel taping the edges is needed. You can brush a good line with the Herculiner. I did buy and use a drill operated paint stirrer. After brushing the tight places and edges the provided roller works very well. I did not try to get the total thickness on the first coat. I bought 2 plastic disposable paint pans, the small ones, worked great. Used 2, because I had a helper.
The particles stay suspended pretty good. I did not have to stir again, until second coat.
Wear rubber gloves, have some rags at hand, buy xylene or xylol, small can sufficient for this job.
I did wipe down the fender lip filler and general areas with a xylene rag.
I put the brush and roller in the fridge, after the first coat and went to lunch. An hour and half later the liner is tacky, but not wet. Time for second coat. I used the roller for this. I made sure, I did not see any red or fiberglass cloth pattern. I put a good coat in each fender area. Herculiner cautions against, mudding it on. Apparently it can or will crack, understandable. Herculiner does come in gray, hmmm?
It is pretty slow drying, open air, 88 degrees, some light wind, not in direct sunlight.
I would use it again. Just for consideration, I think you could use this without stirring to get a non particle finish. Read the instructions, there are some definite DO NOTS. The 1 gallon will probably do 2 roadster bodies.
Hope this helps those like me, who were very undecided on this job.
20th Anniversary Mk IV, A50XS Coyote, TKO 600, Trunk Drop Box, Trunk Battery Box, Cubby Hole, Seat Heaters, Radiator hanger and shroud.