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Join Date: Sep 2002
Location: Port Angeles, WA
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pistons-which side up???

Which side faces up?
The only clues are the letters STD stamped in the center and the relieved area for the valves (?).

Help- please,
Neal
Old 08-26-2003, 08:46 PM
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sure would help if I attach the picture....
Old 08-26-2003, 08:48 PM
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All valves are angled into the combustion chamber area. If I had a head in my hand, I could tell immediately. Look at the combustion chamber on your head and see which way the valves are angled, either / or \ (face of valve). The flycut would be placed on the side of the valve that sticks out the most so that when it is open (ing) it does not stricke the piston. Remembering the valve train layout on the VW, the depression would be at the top of the engine.

these appear to be high compression pistons. Watch your CR when installing.
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Old 08-27-2003, 05:22 AM
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The valve reliefs go down, which would actually invert the STD stamp when correctly installed......
Watch those pistons!
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Old 08-27-2003, 05:59 AM
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Damnit - there goes my memory of the layout - price of being old - thanks for answering Jake.
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Old 08-27-2003, 08:06 AM
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Wouldn't it be a real hoot to find out that Jake had been building engines upsidedown?

=o

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Old 08-27-2003, 09:24 AM
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Ok, which side facing the flywheel for the wrist pin offset?no markings?
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Old 08-27-2003, 09:26 AM
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Quote:
Originally posted by Jake Raby
The valve reliefs go down, which would actually invert the STD stamp when correctly installed......
Watch those pistons!
Thanks!!!!
The supplier suggested installing with the STD stamp right side up which did not make sense to me.

Neal
Old 08-27-2003, 03:23 PM
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Hmmn, that clown probably never built an engine.....I hate people that sell things that know little about them...

Look at the cylinder heads and you will see an 11 degree valve angle that compliments those pistons being installed the way I suggested..
BTW, the piston are probably originally made for a 2.3L Ford engine..

If the rings say Grant on the box, well.............................
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Old 08-27-2003, 04:47 PM
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