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"Blueprinting" VW heads
Hi Volks,
I'm aware of the importance of keeping head chamber volume equal across all the 4 cylinders as well as the benefits of a port and polish job. But I am wondering about the techniques of cleaning up the exterior fin area of the stock cast VW cylinder head. Specifically, I would like to clean up the casting imperfections (casting flash?) between each of the fins. I look "down" into the head fins (from the perspective of the air coming from the fan shroud) and I see places where it would seem that the VW engineers intended for air to blow through. But deep in those places are blockages by random "flash" (like the plastic flashing have to trim away when you build a model airplane or such). My first impulse was to get a small flat-headed screwdriver and rubber mallet...but that didn't seem wise. What tool should I use to get deep in there and clear out those places between the fins. I know it seems anal but I am trying to blueprint the cooling design of my 1776cc Type 1 engine (with Webcam 163 camshaft) so that I may safely run a higher CR (9.2:1) while running pump (Premium) gas in California. I am running the late Doghouse fanshroud with all cooling flaps and all the other various cooling tin that everyone forgets about. I am also exploring getting heat barrier coatings applied to the head combustion chamber by these guys: http://www.replikamaschinen.com/ If the cost of getting those coatings done is less than $300, I am certainly going for it. Anyways, thanks for any advice on head fin cleanup as well as highest CR for my engine. Regards, Geoffe Elias '74 Super Beetle |
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