| Kelly,
That is very interesting. I wish they had been more specific than to just say, "high power/high rpm use". I don't ever run over 7000 rpm, more like 6500 - 6800 rpm, then only for a short time during takeoff. My motor is N/A, but it is p-ported. If my motor was boosted, or if I ran 8500 rpm or higher, I might be concerned. I normally cruise at about 5400 rpm. However, next time I have the pan off I will probably go ahead and up-size the oil pickup tube.
Mark On Thu, Sep 30, 2010 at 5:18 PM, Kelly Troyer <keltro@att.net> wrote:
Mark and All other 20B Users,
Was looking at spark plugs in the "Racing Beat" catalog and happened on the following
bit of information concerning 20B oil pump pickup tubes.............I do not know if the power
and RPM level used in our aircraft qualifies but further inquiry to Racing Beat should answer
that question..............FWIW
Assembly Notes and Special Requirements
Front Housing
All front housings are machined to accept the “NF01”
stock oil pump - the best performance pump Mazda
has ever made. It will also accept any stock oil pump
pickup. However, you are cautioned that some of the
stock pickups are restrictive for high rpm engines
running high oil pressure. The best example of this is
the 20B pickup, which is not suitable for high power
/ high RPM use. All such engines can benefit from a
1” OD pickup. Kelly Troyer "Dyke Delta"_13B ROTARY Engine "RWS"_RD1C/EC2/EM2 "Mistral"_Backplate/Oil Manifold
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