Hi Richard,

Do the injector valves vary the amount of oil injected based on load?  I
have dissassembled a pump from a 13BT and it looks to be a positive
displacement type with no apparent pressure relief function.  I do not
have any "injector valves", just plain old banjo bolts that thread into
the housings, a jet sits in the bottom of the hole below the banjo bolt. What am I missing?

Thanks -- Ian

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Georges,

the 12A pump is way to small for the 13B. According to the spec. the 12A
pump is pumping 2.0 - 2.5 cc  in 6 minutes on its two lines with the
engine running at 2000RPM.
The 13B NT does 4.5-5.5 cc on two lines in 5 minutes engine running at
2000RPM. The Turbo setting does 5.2 - 6.6 under the same condition.
One more thing, if you use the OMP. You must retain the injector valves
sitting on the rotor housing and the intake manifold. Their vacuum line is
hooked up to the intake plenum. These valves do the oil injection, the OMP
only supplies the oil!
I hope this answers the question.

Richard Sohn
N-2071U