David Doshay wrote:

How about the 20b?

David

marc wiese wrote:

The 13B electronic seems to fit the 20B.......

David Doshay wrote:

I'm not so worried about fit as I am about volume of flow. This
was designed for 2 rotors, and now there are 3 that want the
tip lubrication.

Because I had Atkins do my rebuild, I now have a 12b front
cover and metering pump. The Atkins motor mounts bolt to
the 12b front cover, so he suggests the change to the 12b
front cover. I'd prefer not burning sump oil, but only if the
pump can really handle the required flow.

David

Dave,
FWIW, the 20B supplies only 3 oil injector ports, not 6 as in the later
model 13Bs. I do not have the 20B flow rates. The 13B rew flow rate is in
the shop manual, and for one rotor may be close to the 20B needs. I assumed
you had the original 20B electronic pump, and had figured out a way to
electronically control it. I suggest you premix the oil into the gas. A12B
mech pump could deliver enough oil, but you would have to measure it and
set the rod on it to activate on 13B rew rates all the time (and I think
for emissions that Mazda cut back the flow rates on the later engines!).
Marc

 
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