My wife's Stella, which looked like this at the end of last season, had a leaky oil seal, clutch side, so an engine rebuild was in order.
With the rep. of the LML cranks, we thought: might as well do... everything.
Setup was going to be:
- Polini 177 Cast-Iron (I have a thing for "oldschool" stuff)
Worb5 60mm crank
2mm spacer underneath the cyl.
Gickspeed DR head
MRP Reed intake
Malossi Vespower ingition
Pipedesign Cobra exhaust
BGM Superstrong CR80 clutch with 22 teeth
Inbetween: (Yes, yes, everyone has their own "oh shit don't do THAT!" when it comes to teardowns and rebuild. Sit back, relax and enjoy)
New, black trim
Parts finally came in:
JB Weld work (I ended up redoing this one, had a bad mix. Stir until your arms fall off, kids!
It was well needed!
Ended up with the following timings:
out of the box with 2mm spacer underneath and Gickspeed head:
176.5° / 125.5° with 1.35mm squish at 9.7:1
So then I had to retouch the cyl, opened it to 67% and cleaned out the exhaust. This picture is before the final touch. (Turns out taking pictures of an exhaust port is more complex than I thought...)
So I ended up with 185.5° / 125.5°, giving me the perfect blowdown. How did I reach this so exactly? Re-assembly and standardized measuring, OVER AND OVER again.
Final assembly and re-integration into the frame:
It fired up on the second kick
Ready to go:
First ride blew me away, vicious and violent little scooter!
Here is a quick preview. Currently running still too rich, waiting on filter. Tube to the frame was a dumb idea. Also still on the Stella stock clutch with 21 teeth, waiting on the BGM, by the end of this week.
Last edited by DRC174 on Sat, 12 May 2018 04:59:24 +0000; edited 1 time