XJ XJ6 / XJR6 ( X300 ) 1995-1997

How would you refurbish a valve cover?

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  #21  
Old 09-29-2015 | 10:31 AM
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Originally Posted by dfieldsend
You could always just polish it, like I did with mine...
That's proper beautiful. Good job!

Mine was peeling everywhere, so I took it off, cleaned it with iso, sanded it down by hand and then painted it as close to British racing green as I could--GM forest green, semi-metallic, a leftover from my dad's AMC Hornet sportabout (lovely car). I love how it came out, but I messed up some of the self-etching primer, and there is a small triangle where you can tell. Other than that, it looks great, and I plan to paint the coil cover and injector cover black or use silver mag wheel paint. I'll post a picture later if I remember.

Next time it calls for it, I might just polish it like you did! That is one clean engine!
 
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  #22  
Old 10-01-2015 | 01:05 PM
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Originally Posted by Malihide
That's proper beautiful. Good job!

Mine was peeling everywhere, so I took it off,
cleaned it with iso, sanded it down by hand
and then painted it as close to British racing green
as I could--GM forest green, semi-metallic...

I did mine up in a "close as I could find" shade of British Racing Green as well. (I think it was "Hunter Green")
It was in good shape with no pealing or corrosion but I always thought it was a little "plain" under the hood.
So I stripped off all the old paint, sanded and etch primed the
Cam cover and the Intercooler cover.
Painted the cover with the green, repainted the lettering on the coil cover and intercooler cover
(My Mrs did the masking of the letters) then painted them with a silver. Clear coated, color sanded,
buffed and waxed before installation. All the color and clear used was high heat paint.
I also wrapped the injector cover with simulated Carbon Fiber. Been holding up fine so far.










 
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  #23  
Old 10-02-2015 | 03:55 AM
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The other side of the engine bay also got a "little" polish...


 
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  #24  
Old 10-02-2015 | 09:24 AM
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Hi, David,

Did you use one of the generic hose sleeving kits like this one or did you you buy custom lengths?
 

Last edited by shaune; 10-02-2015 at 09:26 AM. Reason: .
  #25  
Old 10-02-2015 | 09:57 AM
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Originally Posted by shaune
Hi, David,

Did you use one of the generic hose sleeving kits like this one or did you you buy custom lengths?
Just a sleeve kit, looks OK, not perfect like a proper made one, but for £15 was worth a test.
 
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  #26  
Old 10-11-2015 | 11:03 PM
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Question How did the vapor recovery filter media hold up to heat of powder coating?

Originally Posted by shaune
I had my cover and supercharger ducting soda blasted and powder coated. I then painted my coil cover and fuel rail same colour as the body of my xjr.












Curious, were there any issues with the filter media under the cam cover (for vapor recovery) and the heat of powder coating?

I'm not sure what the filter material is made from and wondered if it held up to being baked at 450F.

.
 
  #27  
Old 10-12-2015 | 12:04 AM
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Originally Posted by al_roethlisberger
Curious, were there any issues with the filter media under the cam cover (for vapor recovery) and the heat of powder coating? I'm not sure what the filter material is made from and wondered if it held up to being baked at 450F. .
Al, think of how hot that engine and the oil hitting that material can get, I think that'll provide the answer.
 
  #28  
Old 10-14-2015 | 01:32 PM
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Lightbulb Magnesium can't be ceramic coated per Jet-Hot

Originally Posted by JTsmks
Al, think of how hot that engine and the oil hitting that material can get, I think that'll provide the answer.
Thanks, still curious what the filter media is made from? Metal of some sort?

It is hard to tell looking at it up in the baffle.



Also, did get a confirmation from Jet-Hot that they cannot ceramic coat magnesium due to the high curing temperatures required. They said that powder coating should not be a problem given the temps required though, and we of course have already observed that in the posts above.

.
 
  #29  
Old 10-14-2015 | 07:26 PM
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I'm in the process of stripping and painting one. I got it at a you pull it yard for $8, all the bubbling was paint bubbling not magnesium corroding which surprised me. ( the coils on the cover were only $9 each with warranty, jack pot!) I'm stripping it to bare metal and using high heat primer and paint.
 
  #30  
Old 10-14-2015 | 09:55 PM
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Originally Posted by JTsmks
I'm in the process of stripping and painting one. I got it at a you pull it yard for $8, all the bubbling was paint bubbling not magnesium corroding which surprised me. ( the coils on the cover were only $9 each with warranty, jack pot!) I'm stripping it to bare metal and using high heat primer and paint.
Yep same here, pulled one off a 97 XJR last weekend for $6.50.

It's in pretty good shape too, but it will probably be my experimentation subject

.
 
  #31  
Old 10-15-2015 | 09:26 AM
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Here's mine. I don't think it holds up against the rest in this thread but it was my first attempt at anything like this. I plan on redoing it eventually.
 
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  #32  
Old 02-20-2016 | 08:58 AM
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Originally Posted by JTsmks
Al, think of how hot that engine and the oil hitting that material can get, I think that'll provide the answer.
I rang up a local powder coater and told them what I had and they were concerned about the magnesium outgassing in their 400F curing oven. I'd like to think my engine oil is never hitting anywhere near 400F....even last August in that unfortunate incident where my low pressure a/c switch failed, resulting in blown 30A fan fuses and no cooling fans....all whilst I was flogging it in and out of traffic ignoring the temp guage!!!

For now, I think I'll proceed with the soda blasting and continue researching what sort of finish I'll apply. FWIW, said powder coater has a $40 minimum, (assuming small parts are already blasted) so I may take the battery hold-down bracket as well as a collection of brackets and braces I've pulled off the Jeep and sand-blasted over for a trial run with them

Sure wish I could've found those sub-$10 covers you guys did....I paid $200 for my "spare." But then.....I also got an entire, running X300 LWB with 2 new tires...mismatched sizes...but still a fair bargain. In any case, I'll have 3 tries to get it right. This weekend I hope to pull the cover off "Spruce Bruce" for blasting and refinishing, and will fit it to my 95 daily driver, then have a go at that one. Probably fit it back to Bruce and give it a year or two to see which one holds up best (assuming different finishing techniques for each) before we attempt the kid's 96, which is still in fine nick, for now.
 

Last edited by aholbro1; 02-20-2016 at 09:07 AM.
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  #33  
Old 02-26-2016 | 07:44 AM
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All the pictures are real nice. And after refinishing mine it also looked like that. But the real problem is in the spark plug wells. There is where the real electrolysis happens. After about a year I went back in and looked at the wells. The finish is beginning to bubble a the finish up again. What about all you guys looking inside the wells and reporting how that area is doing?
 
  #34  
Old 02-26-2016 | 10:50 AM
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Would it make any sense to coat the plug wells with some kind of rubber or silicone material? Like a sleeve perhaps? I would think that there would be some kind of silicone tubing available that could be slid into the plug wells.
 
  #35  
Old 02-26-2016 | 09:52 PM
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Originally Posted by Vee
Would it make any sense to coat the plug wells with some kind of rubber or silicone material? Like a sleeve perhaps? I would think that there would be some kind of silicone tubing available that could be slid into the plug wells.
I use a piece of bicycle inner tube around my coil boots, long enough to cover the plug to the bottom of the cool to prevent any arcing to the wall.
 
  #36  
Old 02-29-2016 | 06:43 PM
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Originally Posted by EZDriver
All the pictures are real nice. And after refinishing mine it also looked like that. But the real problem is in the spark plug wells. There is where the real electrolysis happens. After about a year I went back in and looked at the wells. The finish is beginning to bubble a the finish up again. What about all you guys looking inside the wells and reporting how that area is doing?
I have not taken anything apart since I redid my cover but everything on the outside does look as good as the day it was done 16 months ago.


Guess I won't know for sure until I have another cam cover leak which is how the 'makeover' started for me in the first place. https://www.jaguarforums.com/forum/j...keover-129647/
 
  #37  
Old 02-29-2016 | 07:27 PM
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Around a year ago I recall seeing a polished stainless steel AJ16 cam cover for sale on ebay I think it was.
Does anyone know if there is someone still selling these as I can no longer find the listing?
 
  #38  
Old 03-01-2016 | 05:45 PM
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Originally Posted by shaune
I have not taken anything apart since I redid my cover but everything on the outside does look as good as the day it was done 16 months ago.


Guess I won't know for sure until I have another cam cover leak which is how the 'makeover' started for me in the first place. https://www.jaguarforums.com/forum/j...keover-129647/
All you have to do is lift the coil cover and disconnect a couple of coils and pull them out. Then look down the hole and see what the condition is. You might also find some oil in there. I sure did, and lots of it.
 
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