Josh's 1985 CJ7 Restoration - Page 3 - JeepForum.com
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post #31 of 37 Old 08-25-2019, 07:16 AM Thread Starter
Deer-Slayer_5
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Quote:
Originally Posted by Hoover7 View Post
So, your top is plastic and absorbed the paint? How many top coats did you apply?

Thanks,
Hoov
I am not 100% sure its plastic... I found on a forum here awhile back that earlier tops were a one piece polycarbonate then switched to fiberglass at some point. I hope someone can clarify this because I could have a aftermarket top and not know it.

When I dug into the top with the dremel tool, it was more of a resin based polymer with no fiber material mixed in. That being said, if it is a polycarbonate top, the paint could potentially be absorbed by the polycarbonate to an extent. That kind of material is porous and can absorb petroleum based solvents and paint, especially if they used a polycarbonate with a glass filled option for strength. Hopefully my engineering talk didn't confuse the heck out of everyone...

To answer your question, I did 2 wet coats of the top coat. I did have to go back on some spots and touch them up because it looked like it absorbed a little and you could see some white. Then I dusted the roof with the remainder of the paint I had. You could see my paths on the roof so I decided to change direction and dust the roof.

I updated my procedure in my last post. I forgot to mention some stuff about the texture.


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post #32 of 37 Old 08-30-2019, 08:10 AM Thread Starter
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Finished up painting the hardtop last night. I didn't want to paint the inside but because I got some over spray in it, I decided to go for it. Ran up to Napa and had them mix up some 9B, Olimpic white paint that AMC put on their Jeeps. I dont know if this was the exact color but it was white and original to Jeep. It all turned out great with no issues! I haven't pulled the tape and plastic off yet. This weekend I am going to get the windows in. I hear this is pretty tough but its gonna happen. I think I need to cut and glue the rear window seal, its a little to big.
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IMG_3021.jpg   IMG_3020.jpg   IMG_3018.jpg  

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post #33 of 37 Old 08-31-2019, 04:07 AM
keith460
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Quote:
Originally Posted by Deer-Slayer_5 View Post
I am not 100% sure its plastic... I found on a forum here awhile back that earlier tops were a one piece polycarbonate then switched to fiberglass at some point. I hope someone can clarify this because I could have a aftermarket top and not know it.

It's according to what year your top was manufactured as to whether it is injection molded polycarbonate or SMC fiberglass.

The polycarbonate hardtops were produced from 1976-1979 or 80. Somewhere around late 79 a lot of changes were being made to the CJ series and some of those changes included the hardtops. 1980-1986 and beyond, the tops were produced using compression molded fiberglass or SMC (Sheet Molding Compound) fiberglass mixture.

The easiest way to tell what type of top you have, polycarbonate or fiberglass, is if it has the four piece seams on the outside, between the side window and door frame opening as well as the rear section all the way around. Tops without the seams are polycarbonate, with the seams, is fiberglass.

Example: picture below is a factory SMC fiberglass top I acquired off of a 1985 Jeep CJ-7 Laredo.
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1984 CJ-7 Renegade
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post #34 of 37 Old 08-31-2019, 05:03 PM Thread Starter
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Thanks for the info Keith. Mine is polycarbonate then. I don't have the lines you showed in your pictures. It make sense to me now that the PO probably got the doors with his hard top and they are a pre 80s style door. My Jeep is an 85 but I honestly prefer the twist handle doors vs the paddle flap door

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post #35 of 37 Old 09-06-2019, 11:20 AM
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Question, since you worked with SEM products at NAPA.

I have Honey interiors on all of my CJ's, and the SEM vinyl spray coating in Camel is a perfect color match for Honey. Can you get an SEM product in that color that would hold up well as a topcoat on a hard top?

85 CJ7 258, borla header, Team Rush, MC2100 ,optima batt, Warn 8274, agr super box 2 & pump, T5 w/ B&M shifter, centerforce 2, superior 1 piece axles, warn hubs 2.5 in lift, 31" BFG MT

85 CJ7 258, A/C, T176, MC2100, Team Rush, Warn XD8000i, superwinch hubs, 3in lift 31" BFG AT/KO
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post #36 of 37 Old 09-06-2019, 11:57 AM Thread Starter
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Originally Posted by wm69 View Post
Can you get an SEM product in that color that would hold up well as a topcoat on a hard top?
I am not really sure to be honest. I was just a delivery driver for my local Napa for many years going through college. I just knew of the products that came through on a regular basis. I don't know if SEM makes a color in like you described but If you have a local Napa or auto parts store that mixes paint, they might be able to color match a single stage top coat that might not require a clear coat. If they have a person who mixes paints regularly and really knows his stuff, I'm sure they could point you in the right direction.

I used a single stage top coat on the inside of my hardtop (a few posts up). It turned out kinda glossy but I don't really mind it beings it's inside of the Jeep. For an outside semi-gloss matte finish you will probably need a flattener. That may require a clear coat with the flatter mixed in because the flattener could not be mixed into the color if I remember correctly.

Hopefully this helps!
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post #37 of 37 Old 09-07-2019, 10:30 AM
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nice work so far, love the AMC blue engine and the textured top....

1985 CJ-7, fuel injected 258, 2.5" Rubicon Express Extreme Duty Lift, 1" Body lift, Crabtree Shackle Hangers, T-5, Dana 300 w/ 4:1 Teralow kit, Dana 30, AMC 20 w/1 piece axle, 3.73 's with Detroit Truetrac front and rear, riding on 32x11.5x15" Cooper Discoverer STT mud terrains
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