The Body Shop TECH General questions that don't fit in any other forum

          
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Old 05-18-2023, 10:36 AM
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Default Are there any new products for Endura Bumper refinish?

I read the posts that are very good regarding the refinish of an endura bumper however they are pretty old. Are there any new products which improve the process or are the steps and products outline in the forum still the preferred method?

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1971 GTO Convertible 455 #64 Heads, HO intake and carb with MSD HEI, RAIII exhaust manifolds and 3:55 posi
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Old 05-24-2023, 11:55 AM
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Nothing I'm aware of that I would be willing to try. The 3m flexible parts repair works excellent and sands easily. As far as epoxy primers I'm sure there are some others out there that would work but again the spi gives excellent results. The key to a lasting repair is to be sure and repair all the cracks and not to apply the epoxy or paints to heavily.

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1969 GTO street strip project 11.1 forged 461, highport heads
1995 Trans-am 420 ci sb 14:1 compression 9"ford
9.89@132 1.34 60ft SOLD!
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Old 05-24-2023, 09:30 PM
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I refinished mine two years ago with the mentioned procedure and products and still like new today.

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Old 05-25-2023, 09:13 PM
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I used SPI epoxy primer followed by some 3M 2-part flexible filler followed by more SPI epoxy primer.
Follow my beginning to end progression starting with this post in my build thread:
https://forums.maxperformanceinc.com...36#post6267136

You can put on as many coats of SPI epoxy as you like. It will never crack. Neither will the SPI Universal Clear I used for the topcoat.

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Old 05-29-2023, 08:48 PM
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I called Spi when I ordered my epoxy and they told me not to over apply it. Might be fine to apply several coats just going on what they suggested. Mine has been painted for two years and looks like I just painted it.

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1969 GTO street strip project 11.1 forged 461, highport heads
1995 Trans-am 420 ci sb 14:1 compression 9"ford
9.89@132 1.34 60ft SOLD!
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Old 05-29-2023, 09:25 PM
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Quote:
Originally Posted by n20ta2 View Post
I called Spi when I ordered my epoxy and they told me not to over apply it. Might be fine to apply several coats just going on what they suggested. Mine has been painted for two years and looks like I just painted it.
Barry told me to start out by applying 4 coats.
http://www.spiuserforum.com/index.ph...-and-spi.8028/

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'69 GTO Convertible - Acquired October 2020. An all original project car. Restomod is underway PROJECT THREAD
'83 Chevy Choo Choo SS El Camino - LT1 350/4L60e, Owned for 30 Years, completed 2nd restomod in 2018 PHOTO
2019 BMW 440ix - Twin turbo I6, 8spd auto. PHOTO
'55 Chevy Bel Air Sport Coupe - Ram Jet 350 / T56 Magnum 6spd, Restomod Completed Sept. 2012, Sold Sept. 2021 PHOTO
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Old 05-30-2023, 06:28 AM
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Can't remember who I talked to over there as it was a couple years back but I think he told me 2-4 light coats. I imagine a decent bit of it is getting sanded off anyhow so more probably wouldn't hurt anything at all and that might be what he was thinking as well. There was a member here a number of years back that really highlighted this whole process and put SPI on the map on these forums. Paulatfast was his forum name, havent seen him on here since around 2010. He ran a Pontiac restoration company and did a ton of these bumpers, he did some really nice work! When I painted mine I put just enough base to cover then did 3 light coats of clear. So far it's holding up perfectly and I hope it stays that way.

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1969 GTO street strip project 11.1 forged 461, highport heads
1995 Trans-am 420 ci sb 14:1 compression 9"ford
9.89@132 1.34 60ft SOLD!
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Old 05-30-2023, 11:33 AM
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I put on 8 coats total. I put on the first 4 and then put the 3M filler on without sanding early in the re-coat window. Then I sanded it all in to match the body. I then followed up with 4 more coats of epoxy and installed back it on the car after it had been primered. Then I sanded both the body and bumper so make it all edge match perfectly. It doesn't matter how many total coats of epoxy are applied, if it's laid down as directed, it will never shrink or crack.

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'69 GTO Convertible - Acquired October 2020. An all original project car. Restomod is underway PROJECT THREAD
'83 Chevy Choo Choo SS El Camino - LT1 350/4L60e, Owned for 30 Years, completed 2nd restomod in 2018 PHOTO
2019 BMW 440ix - Twin turbo I6, 8spd auto. PHOTO
'55 Chevy Bel Air Sport Coupe - Ram Jet 350 / T56 Magnum 6spd, Restomod Completed Sept. 2012, Sold Sept. 2021 PHOTO
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