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Helpful ReplyHot!Powder coating or Keracoting the cooling fan.

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brian williams
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brian williams PCGB Member
2021/07/29 21:50:22 (permalink)

Powder coating or Keracoting the cooling fan.

I want to get my cooling fan looking a lot better and was wondering if both sides of the fan are usually done, or is it just the side that can be seen? Anyone had it done please? TIA?

964 Carrera 4 Baltic blue.Bilstein HD's,lowered,K & N filter,RS steering wheel.
These cars were made for driving,not for leaving in the garage like what I do!!
MarkGolf
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Re: Powder coating or Keracoting the cooling fan. 2021/07/30 13:31:04 (permalink)
Not seen anyone over here doing keracoat but I have seen chatter about over on the US forums. A ceramic spray paint. Not sure it is thinner and better for the fan tips. A friend of mine powder coated his fan and it would fit back in place as the tips were touching the housing. 
 
Normally is the whole lot and no reason to not coat the inside. It will help protect the magnesium. Just be very careful, seen a few fan failure occuring recently, they are only getting older... 
 
I don't know where does it but interested to hear.

Current fleet
1991 964 Carrera
2005 997 Carrera S
2008 957 Cayenne GTS
2003 Boxster 2.7
1994 Eunos Roadster S Special Turbo 270bhp!
1991 Mercedes 500SL
1979 Mercedes 280e
1995 VW Golf VR6 3.0
Robin
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Re: Powder coating or Keracoting the cooling fan. 2021/07/30 20:12:43 (permalink) ☄ Helpfulby jdpef356 2021/07/31 05:17:56
I would suggest that you do not have the fan powder coated.
Usually the fan would be stripped and prepared by bead blasting so as not to remove much metal.
Then the fan should be given a chromate conversion coating to stabilise the metal and prevent future corrosion.
Even if this is not done, they may use a two pack etch primer as an adhesion producing coating.
Then the fan would be heated in an oven up to the temperature the powder would cure, usually 180 to 200 degrees C and before the fan has cooled they would electrostatically spray the powder coating which normally at that temperature would melt on contact resulting in a thick coating of power between 100 to 200 microns at least on all sides and edges.
The pre-heating is to drive out any air trapped in the metal which would cause blistering when the powder is heated to first melt it and then cure the powder resins.
I would suggest either the thin ceramic coating or a simple chromate conversion coating which would weigh nothing and would protect the metal from future corrosion.
My suggestion from 50 years in the paint, powder and metal pre-treatment industry.

Robin Walker.
Early 911 Register Assistant.
Register Director 2003-2008
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1973 911S.
1964 356C RHD Coupe .
1983 924.
mr pg
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Re: Powder coating or Keracoting the cooling fan. 2021/07/30 22:34:15 (permalink)
I would suggest a trivalent (non-chromate) coating nowadays as chromate (although still available) coatings have been banned due to the process being carcenogenic for the operatives. Can still be used on military equipment, but not sure a 964 cowling falls under that umbrella!
mcgc0
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Re: Powder coating or Keracoting the cooling fan. 2021/07/31 11:05:18 (permalink)
Interesting to know Robin/pg. Bookmarked. 

'90 964 C4 Velvet Red
'94 968 Sport Gaurds Red
'90 964 C4 Slate Grey
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brian williams
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Re: Powder coating or Keracoting the cooling fan. 2021/08/07 14:31:08 (permalink)
Update to this post is that I have found a place in Nantwich, Cheshire , T.M.Specialist Coatings do this Cerakoting so I will take it there this coming week. I will of course post a photo of the newly coated fan for anyone interested. Thanks for the replies so far. I’m thinking of having a copper/bronze type finish on it which will look different on a Baltic blue C4. Any thoughts?
post edited by brian williams - 2021/08/07 14:33:39

964 Carrera 4 Baltic blue.Bilstein HD's,lowered,K & N filter,RS steering wheel.
These cars were made for driving,not for leaving in the garage like what I do!!
brian williams
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Re: Powder coating or Keracoting the cooling fan. 2021/08/19 12:31:59 (permalink)
Well this is a pic of the completed Cerakoted fan. I went with gold in the end as the bronze shades looked a bit dark, but once I take off the spare fan and put this one on, i will get the spare Cerakoted in a different colour. What does anyone think, it’s a bit pitted but can’t do anything about that!

post edited by brian williams - 2021/08/19 12:51:20

964 Carrera 4 Baltic blue.Bilstein HD's,lowered,K & N filter,RS steering wheel.
These cars were made for driving,not for leaving in the garage like what I do!!
brian williams
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Re: Powder coating or Keracoting the cooling fan. 2021/08/19 12:43:57 (permalink)
There should be an image of the fan, I uploaded it to imgur.com but it’s not loading it up onto this site! Completely useless! Anyone else have trouble loading pics? 
post edited by brian williams - 2021/09/04 18:04:19

964 Carrera 4 Baltic blue.Bilstein HD's,lowered,K & N filter,RS steering wheel.
These cars were made for driving,not for leaving in the garage like what I do!!
Lancerlot
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Re: Powder coating or Keracoting the cooling fan. 2021/08/20 18:28:59 (permalink)
Log into your imugr account and click on your user name icon in the top right hand side of the screen.
 
This brings up a drop down menu, click on "images" to bring up thumbnails of all the photos you have uploaded.
 
Select the one you want by clicking on it. This brings up a larger version with a menu of link boxes beside it.
 
Click the "copy" button next to the fifth one down, labelled "BBCode". This will briefly highlight the box then place a green border around it, indicating it has been copied to your clipboard.
 
Log onto your forum account, return to your post and select "edit" from the roving menu to access it. Select the section of your post where you want the photo to appear and paste the link you have just copied there. You can do this either by right clicking then choosing "paste" from the dropdown or pressing Ctrl + V.
 
The hyperlink will appear in your post and will be replaced by photo itself once your post is saved. (Leastways that how I do it! )
 
Good luck!
 
Regards,
 
Clive
  
post edited by Lancerlot - 2021/08/20 18:31:20

The older I get - the faster I was!
Past - 924T, '911 SC, 911 C, 911 C2, 964, 996, 996TT, 997TT, 997GT2, 430 Scuderia, 997TT, 997TTS, 991.2TTS. Macan SD. Current - Macan .2 GTS, 992 TTS
brian williams
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Re: Powder coating or Keracoting the cooling fan. 2021/09/04 18:05:29 (permalink)
Done now, thanks Clive. How does it look? Will be installing on my car later.

964 Carrera 4 Baltic blue.Bilstein HD's,lowered,K & N filter,RS steering wheel.
These cars were made for driving,not for leaving in the garage like what I do!!
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