In the past I posted some messages related to a engine block thread being stripped, I was finally able to fix it, and presently the stud is withholding 10 foot pounds which seems good for me. But I having some doubts and maybe issues assembling the engine: piston, circlips, o-rings.
After having put together the piston, pin, plain bearing, circlips on the connecting rod (I still have to perform several tests and assemble the whole thing to ride it but I after lots attempts with ether and new spark plug I was able to ignite the engine) I checked out the compression and it is showing approx. 120 PSI, which sounds good. But I have a few doubts about the engine reassembling that I have done so far: I connected the piston to the connecting rod first rather than installing the piston into the cylinder bore and from there connected the piston already installed inside the cylinder bore to the connecting
rod.; so I did no have a good angle view to align of the piston ring gaps and their respective pins located on the grooves of the piston. Basically I could see that the ring gaps were close be aligned or aligned with the pins located on the grooves of the piston. Before that I embedded the piston and walls of the cylinder with 2 strokes oil and after a little bit of effort the piston went through the cylinder bore; but it is not clear for me how important is such alignment: when I was fiddling with the piston in order to get it through the cylinder the rings may have moved and get somewhat misplaced. I haven't done it before so I don't have a lot assurance, but I believe that it was done right. If not, what would be the implactions? Since I am having 120PSI would it indicate that the rings are properly aligned? I also cleaned the carb with carb cleaner and a thread of wire (but I don't have an air-compressor ). Besides I noticed that even with the idle screw very accelerated the engine is having a low idle (the throttle is very responsive and I can have high
rpms with the throtle though); what could the causes of this (anytihnge related to the piston?)?
Another doubt I have is with respect to the cir-clips installation, it was awkward and took me a long time to install them and they seem to be properly installed; I tried to force them out and them did not come easily: I also tried to align the gap of the cir-clips away form the concaved part of the insertion area on the piston . Another thing is that the engine was covered with paper towel in order to protect it from dust and the elements and it was also deprived of any lubrication for some time (I believe that such 2 stroke engine use plain bearings)
and besides there is no oil tank (since I had to remove it), so in
order to lubricate it a little bit I squeezed a little bit of WD-40
inside the crankshaft.
Any insights and help would be very appreciated.