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Post Info TOPIC: Some findings about the engine of a K8...


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Some findings about the engine of a K8...


Lets make some notes about gen2 things that may have raised some discussion in the past when hacking gen1...

The rotor is 24-2/1 for anyone planning to build a bike emulator. (gen1 was 24-1/1 so rotors seem not to be interchangeable. The bike may start but run erratic - at least the dekstop bike emulator runs erratic with gen1 crank signals outputted to gen2 ecu.)

All velocity stacs are all same lenghts, have not measured the intake port lenghts though. Will be interesting to look into the cylinder specific maps and see what differences are compared to K2-K7 models which has long stacks in the middle and short stacks on the side.



-- Edited by PetriK on Thursday 19th of March 2009 07:17:35 PM

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Here is a link to a thread where I will ask some more questions on K8-K9 busa to confirm some new discoveries.

http://www.suzukihayabusa.org/forum/index.php?topic=137473.new#new




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Some more notes:

Fuelpump relay must really cut off the injector and fuelpump signal to remove the DTC. Just connecting injectors and injector voltage feedback directly to the battery signal generates a fault code.

Camshaft sensor (CKP)  type has been changed. Now the output seems to be TTL level, i.e. the old signal generators may not anymore work with camshaft sensor.



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t5r


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The cam pos. sensor is in fact a a three wire sensor and I belive it is a hall effect sensor.

t5r

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Yes it is a hall sensor Suzuki changed cam sensors in 07 on the 1000 to a hall sensor so i would suspect the same for the Busa.

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Finally got my signal generator working for K8/K9 and can confirm the following:

fuel soft limit is at around 11300
fuel hard limit is at around 11500
gear6 soft limit is around 10500

Gauge cluster is disconnected so I would not expect the speed to play any role in removing the top speed limiter. Have a cluster, but not yet fired up.

Still need to improve the signal generator resolution to get exact rpms - but I think we have a test rig now for trying out reflashing the gen2 rpm limiters. Even thought secondaries and idle air control is still missing.



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