All going well with the engine transplant I will be riding down to Bluff after the Paso riders event in Chch end of November.

For those of you with machining experience please be forewarned, the following may be upsetting. Didn't want to mount the engine in a mill nor attempt to cut freehand so have gone for a halfway house, the width adjuster tool shaft is a touch under 20mm for easy running on the inner needle rollers le...

Nothing is more infuriating than carefully laying everything out in the morning, putting all the appropriate parts in little labelled plastic bags only to unbeknowingly drop one of the little orings - unfortunately the smallest one that was totally silent as it bounced out the garage door and out on...

Unfortunately the ST2 motor was not shipped complete as expected and had to fit a flywheel afterwards. Below are dims for making your own tool if so desired, needed 270Nm to do up the nut. Note a blind puller was used to remove the outer pivot bearings but the inner one was left inplace to guide the...

Did you ever get a solution to this Stepaso? I am looking into adapting a J W Speaker part #0554451 = ECE LHT LED High & Low Beam Headlight with Black
Inner Bezel. This part number is for the "left hand traffic" = LHT which is ideal for NZ. Will significantly improve the lighting.

Rough date late November based around Christchurch, should get some great footage if the weather is good. Check facebook group for details.

No the ST2 engine is wider around the swingarm pivots and the lower rear engine mount. A fair few mm of aluminium has to be milled off to make it a bolt in job.

Yes, the Speeduino is setup using the Tunerstudio software. Crank rotation is natively handled as a 5v square wave Hall effect signal, however a separate VR board can be used to process the ST2 signal. I don't have a VR board so will adaptor a ZF hall sensor instead, still reading the timing gear at...

Spark advance settings translated from OEM Digiplex 2s curves to the Tunerstudio table.

Thanks for the Ignitech link Gert, it is a very sensible solution but I am keen to pursue a different route (i.e. I have one in my drawer from another project). If Speeduino proves unreliable during test runs will go for Ignitech. The service manual for the 906 has an ignition map based on MAP load....

weekend fun.jpg Bought this old girl in Feb with 92k km on the clock, was hoping to crack 100k but was leaking/burning oil badly. I rode it nearly 4k km before doing a teardown inspection and discovered that it was quite worn internally - loose crank plug, badly pitted 3/4/5 gears, notchy mains bea...

I currently have the heads and barrels off my engine to repair the worn valve guides, but looked into the crankcase today and I think I am looking at the typical crank plug backing out and scuffing the crankcase? Any insight into what I am seeing appreciated! I believe I am up for a full disassembly...

That might have been the previous owner of my bike. Unfortunately you won't see it around the south island again until next summer, but by then it will be well on it's way to passing 100,000km on the odometer. It is a 1991 with 17" wheel conversion and 41mm FCR carb upgrade and Zorst "muff...