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HPS4

OIL PRESSURE REGULATOR KIT WITH CHROME KNOB

This kit includes a new oil galery plug with an adjustable knob and a washer which is used as a spring seat in the plug against the relief spring. This makes a playform for the adjuster bolt to adjust the engine oil pressure. Winding the knob in increases pressure, winding it out reduces the pressure.







The standard spring 6K853 is easier to use as its compressed length is shorter and softer for fitment. If you have to much oil pressure, or difficulty in fitting, one coil of the spring ca be cut off at a time. Remember that excessive oil pressure can raise oil temperature and absorbs valuable horsepower.







This kit can only adjust the total amount of oil pressure. That figure should be 50-60 psi at anything over 3000 RPM, any more pressure than that is just heating up the oil and wasting power. You cannot affect the idle speed oil pressure with this kit; whatever pressure you have at idle is governed by internal engine clearances, oil temperature, grade and quality.
  • £15.65 exc vat
  • £18.78 inc vat

 In stock

 
help Recommended usage 1 x HPS4 to fit one mini.
 
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Fitting instructions / Articles

Lubrication - Oil pumps


Essential to the well being of every engine is its oil pump and oil. Much in the same way as the heart and blood is deemed relatively important to us humans! It's also another of those greatly misunderstood and, unfortunately, misrepresented subjects connected to engines.

An alarming number of so-called A-series engine specialists would have you believe that once parting with a veritable bundle of your hard earned readies on that mega motor, what you really need to keep it in good health is a high-pressure/high-flow oil pump. Seems a sensible consideration - except in the A-series world it's impossible. Oh, there are pumps that will give better flow rates than others, but high pressure? Absolutely not.

Oil pressure is regulated by the relief valve in the block of an A-series, not in the oil pump as with say a Ford. Yeah, you know - the one that gets jammed, causing heart failure as you believe your crank bearings have dissolved, and is a pig to get out.