Good news. Found a nice bit of kit that regluates oil pressure. It utilizesa bypass and relief valve. I have done some initial testing and it is working well. I am sure I can dial it in even better as the company 'RACELINE Oil Pumps" is working with me to find a solution.
Not only is this piece of kit small but it is cnc machined, anodized and race ready. A perfect fit for my SHOW & GO and anyone elses machine. This means the turbo is a go again, and I don't have to worry about pressure spikes or high oil pressure killing my katana.
I have it hooked up from the oil pressure switch area that the restrictor is now occupying, then pass through to the turbo (in this case the gauge) and over pressure is released via the dump hose. In the pic that is going temperarily into the clutch cover as that was the convenient fittings to hook into for testing.
The unit comes with 3 selectable spring tensions for pressure variation plus, there is an adjusting screw to increase or decrease spring tension further adding to adjustablity. The low pressure spring limited my pressure at about 2.5 bar or about 35psi. Tomorrow I will move up to the medium spring and try to dial it in at about 60psi.
Once I have had some more time with this I will get more detailed with the results.
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