Posts
912
Joined
8/27/2013
Location
Fredericksburg, VA
US
I picked up this 125 a few weeks ago, in decent shape. I started tearing it apart today, and would like to have it finished by New Years.
A few goals:
2015+ plastic conversion
134cc or 144cc Eric Gorr motor (undecided)
KYB SSS swap, PR2 valving
Blue Excel wheels, billet hubs
I have a pretty good helper on this one!!
Does anyone have info on these burn marks on the crank? My buddy told me that the bearings are likely going bad. It's not a big deal, because while it is apart I plan on replacing the crankcase bearings/ seals, and the water pump bearing & seal anyway.
I'm tossing around the idea of a few options:
134cc kit
144cc kit
134cc kit with a 58mm crank, making it a 144
144cc kit with a 58mm crank, making it a 155
I also plan to have the cases matched, ported, with ceramic bearings.
Anyone have input on these options?
A few goals:
2015+ plastic conversion
134cc or 144cc Eric Gorr motor (undecided)
KYB SSS swap, PR2 valving
Blue Excel wheels, billet hubs
I have a pretty good helper on this one!!
Does anyone have info on these burn marks on the crank? My buddy told me that the bearings are likely going bad. It's not a big deal, because while it is apart I plan on replacing the crankcase bearings/ seals, and the water pump bearing & seal anyway.
I'm tossing around the idea of a few options:
134cc kit
144cc kit
134cc kit with a 58mm crank, making it a 144
144cc kit with a 58mm crank, making it a 155
I also plan to have the cases matched, ported, with ceramic bearings.
Anyone have input on these options?
The Shop
I went with a 134 from Eric Gorr because it only required sending the top end. He was really nice to work with. 125s are so much fun. Good luck with the build.
I haven't gotten a chance to ride it yet. I'm almost done with final assembly. I also did the 2016 airbox and it was just a direct bolt on. I just had to screw out some rivets and replace them. I bought the parts from partsfish.com and they were reasonable.
Post a reply to: 2005 Yamaha YZ 125