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Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
I know, so much has already been said and written, but I didn't find "my" right answer.
On the head of my pistons is an arrow opposed to an X. see photo
I've read that the HD pistons in the shovelheads have the arrow pointing in the direction of travel, forward Aftermarkets the arrows both go towards the exhausts. So in the first cylinder it remains in the same position, forward, and in the rear cylinder it turns towards the exhaust It's correct?
Help me.
I found this logo W, inside the piston with code 4293.
It's a WISECO? see photo
On the domed pistons for Shovelhead engines, you should notice that one valve relief in the top of the piston is larger than the other. The larger relief goes with the larger intake valve.
On the domed pistons for Shovelhead engines, you should notice that one valve relief in the top of the piston is larger than the other. The larger relief goes with the larger intake valve.
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Pistons arrows
