Hello Paul. It's a friend of Steve's I met you at the hangar. Steve regularly sends me updates on what you are doing. If i may be so bold may I say I am totally confused by your strategy for controlling this engine. Can i ask you what turbocharger you are using? Why are you using orifices to tune?
I would say your strategy needs some review. Also the lambda for methanol should be .88

We used pwm modulation and available  manifold pressure to control the wastegate through Honeywell valves. 100% active full time control run by Pi research ECU using a  proportional gain integral derivative strategy. I'm sure your motec can do that too.
Anyway, I might be out of line telling you you are doing it wrong but that is my opinion. If i can help I would be glad to


Michael Cook.

It has a Motec 800 ECU controlling things. It is a GT40 turbo charger and a 50 mm waste gate.
The waste gate was PWM but it broke. I converted it to manual control. Dan the pilot wanted direct
control of the boost anyway . As soon as we did that we learned many things. It was possible
to get into a situation where the turbo charger would run away.  It was above 50 inches
of Hg and 6600 RPM.. It also has a 1.25 inch diameter bypass aperture in the exhaust manifold.
Too small and that aggravates the run away situation, Too large and not enough boost.

As to why orifices? the guy that built the engine died so we will never know his logic for that.

It is working well mostly. The run away is the latest problem but there are several solutions
to that.

We are now installing a blow off valve on the intake manifold.

Come on over anytime and I will show it to you. Email me first.

Paul Lamar


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