Engine Assembly Question, Which way do the pistons face? |
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Engine Assembly Question, Which way do the pistons face? |
ThinAir |
Mar 27 2005, 06:10 PM
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#1
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Best friends Group: Members Posts: 2,543 Joined: 4-February 03 From: Flagstaff, AZ Member No.: 231 Region Association: Southwest Region |
I'm about to install the Mahle Euro (flat top) pistons and cylinders. I know that it is critical to have the pistons facing the correct direction relative to the flywheel. I'm used to seeing an arrow on top of the piston that is supposed to be pointed toward the flywheel. These Mahle pistons have no such marking.
This picture shows the top of the piston. Is that funny little symbol supposed to represent a crankshaft & flywheel? Is it critical which side faces the flywheel end or just that all the pistons are the same? I'm hoping someone answers quick - I'd love to get the heads on tonight! Attached image(s) |
ThinAir |
Mar 28 2005, 12:54 AM
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#2
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Best friends Group: Members Posts: 2,543 Joined: 4-February 03 From: Flagstaff, AZ Member No.: 231 Region Association: Southwest Region |
I was using the value of 60cc that Mark Heery provided for the head cc.
I'm feeling pretty dumb right now - I just went back and reread Marks' forumula and realized I had missed the very last part about dividing the results. Duh! I'll give it another try. In the meantime I tried that calculator, providing what I know and asking it to calculate the deck height. With a bore and stroke of 94 & 71, and a CR of 7.6, it correctly calculated the engine size, but it says the deck height is .424 inches. Clearly something isn't right about that! It's time for bed. I'll think about math again tomorrow! |
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