Thread: PQR 15
View Single Post
  #6  
Old 05-16-2019, 12:27 PM
Stretch's Avatar
Stretch Stretch is offline
...like a shield of steel
 
Join Date: Sep 2009
Location: Somewhere in the Netherlands
Posts: 14,461
The POR15 / KBS type stuff was very popular on this forum a few years back.

I've used it quite extensively on parts of my W123 and to be honest I don't think it was worth the effort. I think Hammerite would have been better (and potentially easier to repair in the event of chipping and scratching)

The problem I have with POR15 is partly the preparation and partly the result. To do the job "properly" you are encouraged to buy the special degreaser and then the special prep fluid and then use the black paint. To be honest it is a ball ache especially on car parts where the degreaser actually isn't up to the job most of the time.

The results after a few years have been a very hard brittle finish that cracks and flakes away from the surface. The pedantic will say it was a preparation problem - I say it is "just like that". I've also seen a fair amount of rust creep under the treated surface.

I recommend the Eastwood rust encapsulator if you're into a one stop brush on solution

Better still the classic car restoration "crew" now seem to be playing about with epoxy primers and other solutions that have been more commonly considered to be marine solutions.

I particularly like the Epifanes epoxy primer which has the nice feeling of a zinc impregnated safety blanket. After spraying many parts of my Volvo in epoxy I've had the feeling this stuff will be longer lasting than the many many many other products I've tried to date...

...I might be writing something different in five years of course! But I'm sure I won't be going back to POR15 again...
__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
Reply With Quote