Got my modded oil pump by Sound Performance thanks to MAP!
It starts as an OEM Toyota oil pump. This is from SP's website.
This includes a new Toyota oil pump. We then take that and modify to increase pressure and prevent the front main seal from blowing out.
What is done to it?
We shim the main pressure spring
Drill a larger return hole
Drill and tap 3 set screws to hold front main seal in
Shorten (tighten) main seal spring
I guess there are problems blowing off the main seal under high HP. Not no more
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