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 Posted: 03-23-2015 08:21 pm
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Esprit2

 

Joined: 05-01-2005
Location: Minneapolis, Minnesota USA
Posts: 575
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 Notice the front main seal housing on the left is for use with the early eccentric tensioner, and is similar to the J-H unit.

The later one on the right is for use with the semi-automatic tensioner, and with the eccentric tensioner as used on later engines.

Note that the early/ left one has a eccentric tensioner boss cast into it's top edge. I've not attempted to use an auto tensioner with that seal housing, and don't know if it will work as is; but it would be a simple cut to remove it. You have both the early seal housing and the auto tensioner, so check out the fit and let us know what you figure out.

Regards,
Tim Engel

Attachment: Front Main Seal Housing - 1974-80 907.jpg (Downloaded 180 times)

Last edited on 03-23-2015 08:45 pm by Esprit2