Do you need to use primer on calipers
21 March 2022, 08:07 PM
#5
Scooby Regular
I would follow what the manufacturer recommends and ignore what 99% of Youtubers do. Do they ever provide an update how the paint has held up a year or two down the line? How do you know they don’t immediately redo the whole job better using different paint or even just never bother using the parts.
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21 March 2022, 10:53 PM
#6
Spraying both, steel 4 pots and some alloy 6 pots. Prefer spraying as think it looks better, never seems to look right with calliper paint when I've used it.
Originally Posted by TECHNOPUG
I painted VHT directly onto the calipers with a brush.. This was with iron rear 2-pots. Alloy calipers may require something else.
22 March 2022, 04:20 PM
#7
i'm not a paint expert by any means, but i'd have thought alloy calipers would require some kind of etch primer? I think the purpose of the etch primer is to be acidic enough to eat away the oxide layer on top of aluminium. Once the etch is on, you can use a regular primer on top of that, and then top coat. Etch primer only needs to be a very thin coat AFAIK.
The above is at least my experience with rattle-canning alloy wheels, but not sure how well a primer would stand up to caliper temperatures (then again, do calipers actually get _that_ hot unless track-daying?)
The above is at least my experience with rattle-canning alloy wheels, but not sure how well a primer would stand up to caliper temperatures (then again, do calipers actually get _that_ hot unless track-daying?)
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22 March 2022, 08:42 PM
#8
I'd be tempted to etch prime too; Although haven't done it on calipers. Only with disc bells followed by hammerite smooth.
Last set of Brembos I painted were off a Mustang, and used high temp spray straight onto the metal (after cleaning). Was a right pain to get good coverage as it thinned on the sharp edges and showed though, so needed 4 coats to get a finish I was happy with. Next time I think etching would give a good key and improve coverage.
I've used aluminium paint straight onto bare metal (steel calipers) and got good results; Was restoring the factory finish after a migrant car wash soaked them in acid wheel cleaner which stripped off the zinc coating (more annoying is the wheels were clean so didn't need acid cleaner
) .
Last set of Brembos I painted were off a Mustang, and used high temp spray straight onto the metal (after cleaning). Was a right pain to get good coverage as it thinned on the sharp edges and showed though, so needed 4 coats to get a finish I was happy with. Next time I think etching would give a good key and improve coverage.
I've used aluminium paint straight onto bare metal (steel calipers) and got good results; Was restoring the factory finish after a migrant car wash soaked them in acid wheel cleaner which stripped off the zinc coating (more annoying is the wheels were clean so didn't need acid cleaner
) .
25 March 2022, 11:03 AM
#9
Only 4 coats, wow I put loads more than that on. More like 10 coats of primer 10 or top coat, then 5 of lacquer.
To be honest I'm not sure if the calliper's are alloy, must be as light as a feather. Didn't use etch primer though, just Hycote high temp stuff.
Saying that didn't use etch primer on my alloys and paint has help up well. Coming off now.
To be honest I'm not sure if the calliper's are alloy, must be as light as a feather. Didn't use etch primer though, just Hycote high temp stuff.
Saying that didn't use etch primer on my alloys and paint has help up well. Coming off now.
Originally Posted by ALi-B
I'd be tempted to etch prime too; Although haven't done it on calipers. Only with disc bells followed by hammerite smooth.
Last set of Brembos I painted were off a Mustang, and used high temp spray straight onto the metal (after cleaning). Was a right pain to get good coverage as it thinned on the sharp edges and showed though, so needed 4 coats to get a finish I was happy with. Next time I think etching would give a good key and improve coverage.
I've used aluminium paint straight onto bare metal (steel calipers) and got good results; Was restoring the factory finish after a migrant car wash soaked them in acid wheel cleaner which stripped off the zinc coating (more annoying is the wheels were clean so didn't need acid cleaner ) .
Last set of Brembos I painted were off a Mustang, and used high temp spray straight onto the metal (after cleaning). Was a right pain to get good coverage as it thinned on the sharp edges and showed though, so needed 4 coats to get a finish I was happy with. Next time I think etching would give a good key and improve coverage.
I've used aluminium paint straight onto bare metal (steel calipers) and got good results; Was restoring the factory finish after a migrant car wash soaked them in acid wheel cleaner which stripped off the zinc coating (more annoying is the wheels were clean so didn't need acid cleaner
) .
28 March 2022, 02:15 PM
#10
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Frayz's Brembo caliper painting Guide - ScoobyNet.com - Subaru Enthusiast Forum
Old, but probably still relevant. If you or a previous owner has removed the black coating under the gold, I guess you'd better etch prime them. If they're still gold, don't remove the existing black coating and then you don't need to etch.
Old, but probably still relevant. If you or a previous owner has removed the black coating under the gold, I guess you'd better etch prime them. If they're still gold, don't remove the existing black coating and then you don't need to etch.
14 May 2022, 05:14 PM
#14
Scooby Regular
Look around for some caliper refurb companies and see what they do or call and ask. The results were impressive from memory so I would go down a pro route and avoid youtubers imo.
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