hendy wrote: ↑Sat May 25, 2019 8:57 pm
Sounds like it goes better than my ts1 225! Good work.
My next build is an Indian alloy 175 which I bored to 185 for Suzuki ts piston. I've heard they wear like cheese but it's fun to experiment.
Ha ...I cannot say my experiment was fun but It sure was a steep learning curve.
I cannot tell you the number of times I left the sccoter for weeks at a time determined to just give up before the stress got too bad.
First think I found was that both the 2x Indian cyclinders I have a 185cc and a 200cc have had all their ports excessively over-ported.
The porting work was appallingly poor and resulted in the gasket mating surface of the cylinder base being less than 1/8" of an inch wide around the transfer ports ..
The result of this was that it was impossible to get the cylinder to seal . I had to do a leakdown test to spot this problem.
The way that I solved this was to fit a 2mm thick aluminium packing base gasket which increased the gasket mating area .
The second issue was the inlet ports which bore no resemblance to the inlet manifold gasket face shape at all .
in fact I had to slot the inlet manifold bolt holes in order to get the cylinder ports covered by the manifold gasket .
Good move going for the Suzuki piston hopefully with quality matched rings ?
At the end of the day I cannot put my finger on a single source that resulted in the engine starting and running so well. it was a combination of many many little things and meticulous attention to detail like the pickup to rotor magnet gap ete
good luck I'm looking forward to seeing your build thread
