Oil issues with the RB26DETT have been well documented, but as always,
Platinum has the solution.
Platinum has been supplying smaller oil restrictor for the RB26?s top end.
R & D over the last 10 years have proven they are a reliable
modification, one example is a tested drag car that did prove that
quarter-mile run an RB can spit out 4L of oil from the rocker covers into
the catch can. Furthermore, 90-percent of that accumulative volume waste is a top
end that?s over-oiled, let alone the oil that actually makes it back to the
There is an argument for valve train being cooled, and too much oil
does not hurt, but there is sufficient oil in the valve train system,
and although too much oil does not hurt the valve train the catch can
will fill, and you have less oil in your sump, you only need to lose oil
pressure for a split second to detrimentally damage a bottom end.
The only oil source to the top end is a 1x2mm restrictor, up until now
commonly replaced by the Tomei 1.55 restrictor, which can still be way too
Thankfully, Platinum has more proactive 1.5mm, 1.3mm and 1.1mm and now
.9mm (we have tested down to .7 with acceptable results thus far
options available perfectly matched to your set-up. Also available are
blanking plugs to be used in an RB30 given the second hole has to be blocked
regardless to meet with an RB25/26 head.
Put simply, whether you return to the sump or not, there?s too much oil up
Oil pressure remains constant. It?s simply the flow that is
top on an RB26, with way too many band-aid solutions on the market. Fixing
the issue itself is key, which is why the widely used Platinum restrictor is a must.
restricted, meaning your top end (and wallet) are safe
Fitment:All NISSAN RB-series engines.