Mazda rotaries. Pre mix and octane reduction

[Kurt Heintz]

The position sensor is quite normal potentiometers. The electronic oil dosing
pump is too susceptible! Additionally I would replace the series apexseals! 
http://www.hurley-engineering.ltd.uk/

or Racing Beat Carbon Apex Seals

Haltech Maps for RX-7
http://www.hitman.hm

Oil Pump Chains, Pressure Regulators    
86-95 Oil Pump Chain, 
(B) Regulator (74-92) Stock (bypasses oil at 60-70 PSI) / Series pressure
93-95   Stock regulator 
(B) Regulator - High Performance (74-92) (bypasses oil at 80-85 PSI /
Adjustable 
(C) Regulator - Factory Race (74-92) (bypasses oil at 105-115 PSI,
adjustable, shims provided for front  regulator)

Best regards Kurt

"Andrew R. Ghali" schrieb:
> 
> On Sun, 15 Jul 2001 16:53:53 +0200, "Jorgen_Karlsson" <jorgen.m.karlsson at home.se> wrote:
> >
> >...
> >How is the oil system controlled by the stock computer, can't an aftermarket
> >computer supply a suitable signal?
> >
> 
> As I understand it, the electronic oil metering pump is a stepper motor,
> which means that the ECU must drive the four windings in a precise sequence
> to get the pump to operate correctly.  The drive sequence to the windings
> is run forward to inject more oil, and reversed to inject less.  It also has
> a position sensor so the stock ECU can tell when it's set properly and when
> it breaks.  It's a fairly complex system that I do not believe any after-
> market computer has implemented.  The system was first installed on the
> Series V Rx-7's (89-91), which I just verified in my '89 workshop manual.
> 
> Hope this helps.
> 
> Andrew
> 
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