Has anyone ever seen this before? I was installing the Dutra oil pump in my "race" truck and needed to replace the gasket on the pressure relief nut. So I pulled a new pump off the shelf and robbed the gasket. But while I was looking at it I noticed quite a restricted passage on the new pump. Here is the picture of one of Doug's modified pumps and the restricted one. I would say it was an awful casting for sure. I will have to get out my die grinder and do some serious work on it if I ever want to use it.

Rick

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

That's why you keep using old ma mopar's pumps.. With a better flowing AL casting you can relieve some of the restriction with your die grinder on an old original one.

That cast iron Piece is too heavy anyway


Greg

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http://www.youtube.com/hyperpack

I don't care how much it weighs, but it has a 75% smaller hole than it should!

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

This is one example showing why I got into porting and "blueprinting" SL6 oil pumps...
The aftermartket pump housing casting quality is "all over the map".
DD