GY6 50cc

[MStud]

I have a couple concerns on this GY5 50cc motor i bought off ebay for a little project.

Im curious on what this port is for on the front of the engine
http://i676.photobucket.com/albums/vv126/airride/12910126_10154689803366002_335482994_n.jpg (http://s676.photobucket.com/user/airride/media/12910126_10154689803366002_335482994_n.jpg.html)

also Im curious what are the 2 vacuum ports are for on the intake elbow.

http://i676.photobucket.com/albums/vv126/airride/12910090_10154689803351002_1511589742_n.jpg (http://s676.photobucket.com/user/airride/media/12910090_10154689803351002_1511589742_n.jpg.html)

Thanks guys!

[rks]

1. Part of emission control system. A lot of folks remove this stuff, then make and attach a block off plate to the opening. There are part suppliers that sell these plates, but they are easy enough to make.

2. Vacuum ports are there to operate fuel petcock/pump, and the ACV/anti backfire valve on the right side of carb. Some manifolds have just one nipple....doesn't matter either way, just cap off unused ones.