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I have a Super 8 150. Over the summer I was dealing with electrical goblins that kept blowing fuses and cutting out my lights. While I have done many things to my scoot, the problem lay in an untouched part of the system... Loose wire in the rear blinker (hate those intermittent problems). The not starting, hard starting, won't start problems were not just electrical though and my focus on electrical prevented me from checking mechanical. With the electrical all sorted, I checked my engine and found no oil and a point where it was seizing... The damage was done.

The simple fix, replace the scored cylinder, piston, crankshaft, bearings, gaskets etc... Basically, new top end... Of course I did some research and decided to make it more difficult and do a big bore kit. I had the engine machined out for a 180cc kit by Naraku, with a forged piston, new head and new cam (A8... Still using it for commuting, not racing). All the parts are Naraku. 

One problem, already solved was the big bore kit by Naraku needs a shorter chain (also by Naraku). The other problem I am running into, it seems to be a smaller head from the original which prevents the rockers from working with the cam... The old head really isn't designed for the big bore kit so going back isn't an option. The entire top end of my engine is now Naraku but I am not seeing recommended rocker arms, springs or replacements.

Anyone else done this mod and figured out the rocker arms?

FYI: The tolerances for the 180cc are extremely tight with absolutely no way for anything larger to go in. The shop machining out my engine to fit called me three times bcz of how close they were and they weren't sure they could finish. Definitely not for amateurs. I only did it bcz replacing the parts with new Kymco parts vs racing parts by Naraku was a few hundred dollars difference and I was already paying for labor. If I was doing it myself (too many other projects at the moment), I would still be spending a lot, doing the work and getting the exact same bike (labor would have been the real savings)... I just don't have the skills yet to do the big bore kit myself. But since I was hiring it out... I figured I would use their expertise to do what I cannot.

Update: The Naraku rocker arms fit the head perfectly. With that fix, the engine now turns over again... on to new problems below.

Ok, first things first... I have no idea what I am doing... just figuring it out as I go.  I have been using a how to guide from http://www.instructables.com/id/Installing-a-SPY-5000-two-way-motorcycle-alarm-int/?ALLSTEPS for the Spy 5000m alarm which I purchased from aliexpress.com. 

The install is rather easy.  I used the start switch in front of the bike and all my wires were accessible from that point.  I included a picture.  I could access the wires for the turn signals on the right side (of the pic, left side of the bike) and the start switch on the left (right side of bike).  I chose to cut the wires and put terminals on both ends so I could always reconnect if the alarm needed to be removed for whatever reason.  I also cut the wires after the wiring harness just in case I ever need to remove the start switch. 

The alarm sort of works as it comes but there are modifications to be made to make the kill engine feature work.  The how to is in the guide.  I can testify the alarm will beep and make a lot of noise if set off but I was unable to get it to kill the engine or use the remote start feature because I haven't made the necessary modifications yet.

Does anyone have experience with alarms?  I am installing one because I will actually be putting things into the box on the back while at work and this alarm has a key fob to tell me when it is going off... and I can disarm the horn and rely on the key fob.

I am posting this just as an FYI for where to find the wires you need... Note, the remote start wire is not run to the front.  The alarm is meant for a motorcycle and has a lot of features but it is technical and the instructions focused on how to operate the alarm with the remote... the install instructions were just a wiring diagram of the alarm, not the bike.

I have been coming across several upgrades for the GY6 motor.  A local scooter shop had a 200cc upgrade kit for my 150.  How effective are these kits?  I am assuming they are street legal but I was curious what else I would need to change.  I am assuming I would have to rejet the carbs, change the belt to Kevlar, likely a new pipe to reduce restrictions at the exit.  Do I need to change the weights or the variator too?  I haven't seen anything in the forum about increasing the CC for performance but I don't want to rely on the word of a salemen trying to sell me parts.