Oil pressure too high for stock twins
#1
Oil pressure too high for stock twins
Rebuilt my engine about 6 weeks ago and didn’t know that I shouldn’t modify my oil pressure regulator. We modified it to bump up the oil pressure. Without no restrictor in the oil feed line, oil was pushing out of my front turbo.
We made a restrictor in the banjo bolt by threading another bolt inside the banjo bolt and drilling a hole in it like so. This is version 2 of the restrictor. Version 3 has a .065 hole and I am still getting some oil through the turbo seal. It’s not leaking like the pic above but it does smoke out of the tail pipe under hard boost.
I’m assuming if I continue to drive it hard, I will eventually damage the turbo seals and it will smoke even worst?
.065 is a tiny hold and not sure if going to a smaller hole will help. Do I have any other options besides pulling my engine out and replace the modified oil pressure regulator with an un modified unit?
We made a restrictor in the banjo bolt by threading another bolt inside the banjo bolt and drilling a hole in it like so. This is version 2 of the restrictor. Version 3 has a .065 hole and I am still getting some oil through the turbo seal. It’s not leaking like the pic above but it does smoke out of the tail pipe under hard boost.
I’m assuming if I continue to drive it hard, I will eventually damage the turbo seals and it will smoke even worst?
.065 is a tiny hold and not sure if going to a smaller hole will help. Do I have any other options besides pulling my engine out and replace the modified oil pressure regulator with an un modified unit?
#2
I would be fixing or undoing whatever work you did to the regulator. Putting an orifice into that banjo bolt is just a bandaid for the overall problem.
If the turbos are seeing that high of an oil pressure, what about the rest of the engine? OMP? It really needs to be fixed back at the source.
If the turbos are seeing that high of an oil pressure, what about the rest of the engine? OMP? It really needs to be fixed back at the source.
#5
My father in law is used to building NA engines and when he builds them he likes to increase the oil pressure.
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