My 1987 Porsche 928 S4, 5 speed


  

Magnesium anticorrosion Protection  - Tagniting


 
 

The E-mail About Tag Process I Have Exchanged With Bill Gorman Of  TAG:



Wojtek,
 
I enjoyed talking to you - it was not a bother, I enjoy learning about various applications of magnesium alloys.
 
The paint adhesion of Tagnite is much greater than the chemical surface treatments for a number of reasons.
 
1.  Tagnite is 10 - 20x thicker than chemical treatments.
2.  The anodize process drive the Tagnite coating into the base metal.  An overall thickness of 0.40 mils will have 0.20 mils penetrating into the metal.
3.  The structure of Tagnite under magnification looks like coral or a sponge with pores on and below the surface.  The pores act as a sponge to draw the paint into the Tagnite layer not just on the surface, thereby vastly increasing the paint adhesion.
 
Hope this helps.
 
Regards,

Bill Gorman

 

-----Original Message-----
From: Szczucki, Wojtek Z
Sent: Tuesday, August 10, 2004 4:52 PM
To: Bill Gorman
Subject: RE: Porsche 928 Intake Manifold And Valve Covers


Good Morning Bill
 
It was very nice to talk to You.
 
Sorry about bothering You - I just am learning about all these new processes as fast as I can.
 
E-Coat
The "E-coat", that You have mentioned, is an alternative to powder coating or painting isn't it?  Since I will  be powder coating, and we cannot e-coat just inside the manifold, I will probably not be really needing e-coating, will I?   Tagnite alone is already one of the best corrosion protection for magnesium, isn't it?
 
Adherence to magnesium
Porsche coating inside Intake Manifold is known to have flaked off.  When it does, it becomes ingested into the engine.   Flakes had been found in engine oil.  I would really want to avoid that.  So, how well Tagnite adheres to the magnesium alloy surface?   Chemical coatings just react with surface, so they do not flake.  But what about that oxide that Tagnite creates?
 
 
Best Regards,
 
 
Wojtek
 
 
 
 

-----Original Message-----
From: Bill Gorman [mailto:bgorman@tagnite.com]
Sent: Tuesday, August 10, 2004 6:34 AM
To: Szczucki, Wojtek Z
Subject: RE: Porsche 928 Intake Manifold And Valve Covers


It would be best if the powder coater baked the parts prior to painting.  Also, you need to tell the powder coaters that no pretreatment is necessary.  The Tagnite coating will act as the primer and any pretreatment process will damage the Tagnite coating.  Baking the part will not hurt the Tagnite.
 
Regards,

Bill Gorman

 

-----Original Message-----
From: Szczucki, Wojtek Z
Sent: Monday, August 09, 2004 3:28 PM
To: Bill Gorman
Subject: RE: Porsche 928 Intake Manifold And Valve Covers


Thanks Bill,
 
This begins to look reasonable.  I will check the shipping costs via UPS.
 
One question.  
From what I have red, the parts need to be out - gassed shortly before magnesium is powder coated (reduces hazard of bubbles formation).  Can I do that after TAGniting or would You bake clean parts before You process is carried out?
 
 
Best Regards,
 
 
Wojtek 
 
 
 
 
-----Original Message-----
From: Bill Gorman [mailto:bgorman@tagnite.com]
Sent: Monday, August 09, 2004 11:15 AM
To: Szczucki, Wojtek Z
Cc: Bill E.
Subject: RE: Porsche 928 Intake Manifold And Valve Covers



Wojtek,
 
We will put Tagnite on your parts for $150 provided that the parts are clean - all the old coating is removed from all surfaces.  I do not know what people charge to blast parts.  We will gladly ship your parts to Phoenix.
 
Regards,

Bill Gorman

 

-----Original Message-----
From: Szczucki, Wojtek Z
Sent: Monday, August 09, 2004 12:32 PM
To: Bill Gorman
Subject: RE: Porsche 928 Intake Manifold And Valve Covers


Thanks Bill for Your fast response,
 
It appears that You do not do the surface preparation, right?   If so, would I have to blast the parts to remove flaking paint off covers and non flaking paint off the Intake Manifold?  Also, I would have to blast the inside of the manifold since Porsche inner coating is known to flake as well.
 
It is not cheap to do that is it?
 
Should I use Your service, would You be able to ship parts back to Phoenix, to my powder coater?
 
Regards,
 
Wojtek
 
 

-----Original Message-----
From: Bill Gorman [mailto:bgorman@tagnite.com]
Sent: Monday, August 09, 2004 9:04 AM
To: Szczucki, Wojtek Z
Subject: RE: Porsche 928 Intake Manifold And Valve Covers


Hello,
 
If the part is very clean and degreased, then Tagnite can be applied.  All the original coating must be removed prior to Tagnite application. 
 
1. Tagnite will serve as an excellent base for powder coat.
2. We must coat the entire part, we cannot coat selective areas.
3.Tagnite can only be applies at our facility in Grand Forks, ND.  We would charge a lot fee to coat the parts you show below.  A typical lot fee would be $150 - $200 with a 5 - 8 day turnaround time.
 
Hope this helps answer your questions.
 
Sincerely,

Bill Gorman

 

-----Original Message-----
From: Szczucki, Wojtek Z
Sent: Monday, August 09, 2004 10:49 AM
To: bgorman@tagnite.com
Subject: Porsche 928 Intake Manifold And Valve Covers



Hi,

I am reading about magnesium alloy corrosion protection to be used on the parts shown below.   There are few options out there:  HAE, DOW 7, Iridite 15, or as most people do - doing nothing.  Then, I have run into Your product.


These parts are normally sand (or other) blasted, outguessed, and then powder coated.   Usually inner factory coats becomes stripped.

1)      Could Tagnite be used for powder coating?
2)      If not, could only inner side of these parts be Tagnited?
3)      How difficult it is to apply TAG on it?

4)      Do You have ANY shop here in Los Angeles area to provide such service.


I really want to do great job on my very clean car.
 

Best Regards

Wojtek


Intake Manifold @ Valve Covers


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