50mm bbk no start  By  tactics (Read 1,819 times)

I just did my bbk last week. Made a point not to change anything before hand so I would have a better idea of what was up if something went wrong. Waited a couple days before changing cdi and coil. New carb was already on the motor. Screwing with the a/f before you crank it leaves all kind of windows open imho.

I would go back to what you kno worked, except the bbk, that might be taking it too far. And see if it starts. I hear you can check your valves with printer paper.

I kno how you feal tho. After my install, my batt didn't have enough amps so I went up to a 9amp, then my starter craped its pants. The whole bike will be rebuilt at this rate not a bad thing tho, its fun, I'm learning a lot !

I can't tell you the exact psi of the compression. But being that you say it should be around 120 and trying to kick start it I have to put most of my weight on it at 150 and everything feels and sounds smooth i'm guessing it's not to far off that mark. I replaced the valve head and it picked up a little more. I know it fires on that one, the erg or whatever the thing is is hooked back up. So really the only thing left is the carb and the bbk that it has not fired on. Still have not tried to start it yet today. Getting ready to push it outside and give it a shot.

EDIT: Stepped out cranked it and poof it starts . Getting ready to head back out and do my final A/F and idol adjustments then take it for a test run down the road!!!!! So excited!!!!!!1 ;D

Do you mean a tool to hold the clutch together to get the contra spring off?

Awesome thank you. ;D I am going to replace all the springs in the clutch next week. Don't have the money to this week. I have 8g rollers that came with the kit, just do not have the means to be able to change them right now. It's lighter rollers for hills and acceleration and heaver for speed right? I think my A/F might still be slightly off. It's really hard to hear the slight adjustment it causes at idol, I live by a main road through town and constant traffic.

I was thinking something like that but I was worried about breaking the teeth off. Now that I know that is not an issue I will be changing them out soon to see what happens, thanks alot! Now I have a new problem though, I guess the BBK is to much for the belt because I keep smelling burning rubber once I stop all the lines are fine but serious amounts of rubber dust in the housing. I was wondering if a " high quality " lawnmower belt the same length would work. The scoot is my only means of transport right now so I don't have time to wait on one to show up.

I still have the crappy stock belt on it, I know it needs replacing but I have to do it on the fly to make sure I get to work. Other than that the BBK has been doing great, trying to find a way to hitch the exhaust up too, the one that came with the kit is about 1/2 inch off from the mounts I don't want to force it and snap the exhaust lags but I can't bend the metal either.

However other than the small issues no " major " mechanical issues out of the kit so far. I'm pleased with it, hitting every bit of 50 according to the speedo at least. I am going to get a bike speedo this week and check it with that just to make sure. The stock runs on KM with mph as the secondary so i'm betting it is 5-10 off (either direction) trying to read the mph.

Well the belt " looks " ok and is the variator supposed to be ultra tight? I broke a socket, and lifted my scoot off the ground a few times before I finally got it loose. It just seemed impossibly tight, the rollers that came out of it look trashed. I believe at one point they where white, but I can literally feel the difference between the stock ones and the 8g. Is it normal for the stock rollers to be so light you can feel it when holding a single roller in the same hand? Plus as I said I " think " they where white. I have Never delt with rollers before so I have o idea what " normal " is, they only have about 250miles on them but look like they have 1000. ( To me at least ) I'm going to try and get a pic up.

[replyingto=tactics]tactics[/replyingto]That is rather strange. My rollers were a gray-ish color when I inspected them at 2k miles and I didn't even have a flat spot. If you've got flat spots then maybe your bbk has put a lot of wear on your rollers. I do hope you got sliders 'cause those don't wear out nearly as fast.

For curiosity's sake can you weigh them? My stock rollers came as 6.5g and they feel ultra light compared to my 9g.