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Old 01-02-2010, 12:14 AM
long-gone long-gone is offline
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Join Date: Jul 2009
Posts: 254
No, the M103 has no such tubes. I believe there's a machined oil gallery the length of the head with a metal plug in the end. If you send a 103 head to the machine shop for a rebuild, a good shop will take the plug out before cleaning and seal it back up again.
There's a metal (maybe plastic on later models?) oiler tube that sits over the valvetrain and drips oil onto the rockers but that's a somewhat different purpose item
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