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Main : Mechanical : Engine Comparo: Rocker shaft oil passage

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Comparo: Rocker shaft oil passage
Comparo: Rocker shaft oil passagePopular
SubmitterddgonzalMore Photos from ddgonzal   Last Update2010/7/25 18:44    Tell a friendTell a friend
Hits2884  Comments2    0.00 (0 votes)0.00 (0 votes)
Early vs. Late A-series oiling passage

Early: separate hole through head gasket, two blinds in head
Late: uses head bolt hole of gasket, two blinds in block

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Poster Thread
ddgonzal
Posted: 2010/6/9 5:36  Updated: 2010/6/9 5:36
Moderator
Joined: 2001/5/3
From: Kent, WA
Posts: 31772
 Re: Comparo: Rocker shaft oil passage
i wonder if Nissan did this to simplify the head machining

or

to remove the extra hole from the head gasket? They did have trouble with the early head gaskets, and added an o-ring in the revised B110 head gasket.