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#1
08-21-2005, 05:16 PM
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New Oil Pump with Two Types of Springs
When I received my Melling M54D-S oil pump it contained two springs of different size. One spring measures 1"-50/64 and the other is longer which came installed in the pump. Which spring is required for a stock 65 389 as there were no instructions included for choosing the right spring?
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#2
08-21-2005, 05:28 PM
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im sure eather one would work but i think the longer one will give you higher oil presher
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#3
08-21-2005, 05:33 PM
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"presher" good thing Brian B.'s not around...LOL
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#4
08-21-2005, 05:36 PM
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The longer spring will give you about 60 psi at road speed.
The short one is about 40 psi for older 389 type cruiser vehicles that old people drove and were never revved over 4000. I would always use the longer spring except in a pure fuel economy vehicle where the shorter spring "might" take slightly less road hp. Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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