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How to Cook Your Cam Sprockets


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8 replies to this topic

#1 MR_Loyale

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Posted 19 July 2014 - 12:23 PM

I decided to spray my cam sprockets to match my engine. I had cleaned and scrubbed all the dirt from the aluminum block but it does tarnish and without heroic efforts, I just wouldn't get that shiny "new" look as it was originally 20 years ago.

 

Of course I am using engine enamel. Cheap Krylon not meant for engines will last all of about 8 month before it peels due to the heat of the engine.  A requirement of the engine enamel is that it be heated to 200 F in order to harden the coating. No problem for the engine block, just drive the car.  But for other parts like the cam sprockets, if they are getting up to 200 F then your engine is on fire.

 

SO of course you will need to "cook" them at 200 F for one hours, as it states on the can, in order to get a durable finish. Being a bachelor, I could certainly just turn on the oven in the house. But for the sake of you married and cohabiting mechanics, I urge you not to do so for you will suffer the wrath of "the other".

 

What is a good self respecting man to do?  That's right, fire up the barbecue!

 

112_0097.jpg

 

 

Amazingly, the rules for "cooking" are similar to those used in regular baking (at least with the VHT product).  Low and slow for a light finish such as silverish aluminum. If you crank up the burners you get a golden brown color. 

 

You can see below I "overcooked" my cam sprocket. I kind of like it even it if is a bit ricer like:

 

112_0107.jpg

 

 

 

I used the exact same paint on the block as on the sprocket. The only difference is the temp used to cook them.  I used both burners on high. This was probably closer to 500 F than 200. The engine hasn't been started yet so it hasn't gotten warm.

 

I guess it is also a way to visually tell if I overheat the engine. My block will turn to gold. :P


Edited by MR_Loyale, 19 July 2014 - 12:37 PM.


#2 BirdMobile

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Posted 19 July 2014 - 12:27 PM

Yum.
Good eatin' :)

#3 skishop69

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Posted 19 July 2014 - 12:30 PM

lmao! Love it! Luckily I have an understanding other half who's crafting stinks things up just as much or more than my baking parts in the oven. Of course, a good range vent helps a lot. A just a common sense note: Don't cook freshly painted parts. Flame on!!! lol



#4 MR_Loyale

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Posted 19 July 2014 - 12:42 PM

I cook burgers on that barbecue too. But not at the same time as the cam sprockets. I was hygienic too - see I covered it with foil.



#5 BirdMobile

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Posted 19 July 2014 - 12:44 PM

Will the thickness of the paint layer cause any timing differences with the cams?

#6 MR_Loyale

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Posted 19 July 2014 - 12:47 PM

Will the thickness of the paint layer cause any timing differences with the cams?

 

Good god I hope not! I'll let you know!  If it does, you will see another thread posted "How to strip down your cam sprockets".



#7 MR_Loyale

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Posted 19 July 2014 - 12:52 PM

If your honey asks what you are doing the kitchen, just reply "Baking something special" and hope she isn't in the mood for fresh baked bread.



#8 MR_Loyale

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Posted 19 July 2014 - 02:29 PM

One crank bolt golden brown. Who ordered this?

 

112_0108.jpg



#9 l75eya

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Posted 20 July 2014 - 04:36 PM

I did! Shipping to 07087. :-P




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