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Install align oil pump on fresh engine

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Old Aug 7, 2019 | 08:43 AM
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Default Install align oil pump on fresh engine

Putting my car back closer to stock. I'm putting in a freshly rebuilt Lt1. When installing a new oil pump on a fresh engine, how do you align the oil pump correctly?
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Old Aug 7, 2019 | 09:16 AM
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Buy the alignment tool to line it up.
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Old Aug 7, 2019 | 09:37 AM
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Originally Posted by subieworx
Buy the alignment tool to line it up.
I thought the alignment tool was just to mark where it was before removal? With everything being new, I can't tell where it was before.
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Old Aug 7, 2019 | 10:15 AM
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There is a shimming technique as well for centering the housing on the rotors. instructions can be found on youtube.
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Old Aug 7, 2019 | 10:32 AM
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Someone is selling 3d printed alignment tools on ebay for a good price and claim they have been used without issue.
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Old Aug 7, 2019 | 12:43 PM
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Originally Posted by Dave01GT
I thought the alignment tool was just to mark where it was before removal? With everything being new, I can't tell where it was before.
This is correct. The factory manual doesn’t talk about aligning it any special way unless reusing the old pump.

Originally Posted by us3rname
Someone is selling 3d printed alignment tools on ebay for a good price and claim they have been used without issue.
Yes, I worked with a forum member about a year ago to provide measurements of the real tool so he could make some 3D printed ones. Theres no reason they should not work as long as you use them correctly.
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Old Aug 7, 2019 | 02:35 PM
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3 .002 shims should be able to get the job done.

Loosely install the pump with the front cover off and slide the inner and outer gears into the pump then place the feeler gauges around the perimeter of the outer gear, then torque the oil pump to spec.

If you want to get really fancy you can shim the inner gear too.

This is the method in video form for ls stuff, but lt should work the same.


Last edited by sevinn; Aug 7, 2019 at 02:35 PM.
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