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I have been looking at a 1970 coupe for possible purchase. I have noticed that when looking into the inside of the front fenders (i.e. behind the coolant overflow tank, in the area of the fender air outlets) that the fiberglass has no finish on it. The inside of the panel is natural with the glass fibers readily visible. Is this right? I thought it should have a grayish cast and be opaque. What I see is a natural/yellowish color and is almost translucent. This makes me wonder if the front fenders are replacements and indicative of an accident. Please advise. Thank you.
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1977 L-82 M-21 Two-Time Top Flight
1976 L-48 M-38 nothing is correct
1973 Triumph Bonneville 750 T140V -
Re: finish on inside of C-3 fiberglass???
The yellowish tint also makes me think that the glass has been replaced. The inside surface of the body panel should be fairly smooth. You will be able to see some of the glass strands. Hand laid fiberglass has a very textured finish, like the inside of a boat, or the back side of a fiberglass shower stall. If you are unsure as to the surface that I am talking about, go to your local Lowe's or Home Depot and look at the backside of showers with the rough textured finish.Dick Whittington -
Re: finish on inside of C-3 fiberglass???
Dick, that is exactly what I saw. I couldn't quite recall where but now that you mention it it looks just like the inside of a boat or especially the back of a shower surround.
Also, there is just a little too much "blackout" in the area of the headlight vacuum servos and the radiator.1977 L-82 M-21 Two-Time Top Flight
1976 L-48 M-38 nothing is correct
1973 Triumph Bonneville 750 T140VComment
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Re: finish on inside of C-3 fiberglass???
Mike, original fiberglass from the late 60s to early 70s was a dark charcoal gray (black) with fiber sworls visible in the surface. Both outside and inside surfaces should be smooth (press-molded). Later 70s panels are lighter gray in color with no fibers visible in the surface.
The car you're looking at has been repaired using natural resin available at Home Depot/body supply stores and fiberglass mat. The use of tinted resin and a lot of hand sanding would have made the repair harder to see.Comment
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