Post by steve on Jul 1, 2015 6:21:25 GMT -5
Oh, sorry. The bolt spacing is the same. You technically can install a BBK, you just have to bore the case. I did not have a tape measure, so I had to mark a stick. The 47 was pretty close, but it wouldn't fit. I'd bet you could fit a 44mm jug in there. It's a customer's scoot, so I don't have a ton of info on the engine, and I am not going to be able to really dig into it. But, I hope to save somebody some heartache with the info I do have. He didn't pay me to take it apart to see if a BBK would fit, I just decided to loosen things up and take a peek while I was doing the valve adjustment.
He wanted better hill climbing. When I went over to his place to check the engine number, and look over the scoot, I saw the CVT case, checked the engine number, and went home to assess. I ordered the JOG/Minarelli/Zuma clutch spring, and variator weights. Then, yesterday, when I took the CVT apart, the stuff I bought did not fit. LUCKILY, I had a spring and some rollers from my scooter that would fit in his. I lucked out. I'm a 1 man operation, so that could have really put a hurtin' on me.
I put a new carb on it. With the 37mm bore, I had a 72 main jet in there. I was not pleased with the performance gains from the CVT upgrades I added. So, I decided to go bigger on the main jet for the heck of it, while I was waiting for the CVT to cool down. I put an
main jet in there, and that thing LOVED the bigger jet. The performance increase was marked. That's pretty large for a 37mm bore, but I popped the 4-hole off of the air filter intake, and it was perfect. Really pepped that thing up. The larger jet really complimented the CVT upgrades well. I was pleased, and he was too.
It has one of those valve covers that has the plug on the top and the bottom, to adjust the valves without having to take the valve cover off. The nuts on those plugs is around 1", and there is so little room to get a big wrench in there, that it's kind of impossible.
Does anybody else have a scooter that, because of the frame, a valve adjustment is a HUGE ordeal? I think valve adjustments are the hardest thing I have to do, on the scooters that have frame pieces all in the way. It's a huge pain on some of them.
He wanted better hill climbing. When I went over to his place to check the engine number, and look over the scoot, I saw the CVT case, checked the engine number, and went home to assess. I ordered the JOG/Minarelli/Zuma clutch spring, and variator weights. Then, yesterday, when I took the CVT apart, the stuff I bought did not fit. LUCKILY, I had a spring and some rollers from my scooter that would fit in his. I lucked out. I'm a 1 man operation, so that could have really put a hurtin' on me.
I put a new carb on it. With the 37mm bore, I had a 72 main jet in there. I was not pleased with the performance gains from the CVT upgrades I added. So, I decided to go bigger on the main jet for the heck of it, while I was waiting for the CVT to cool down. I put an
main jet in there, and that thing LOVED the bigger jet. The performance increase was marked. That's pretty large for a 37mm bore, but I popped the 4-hole off of the air filter intake, and it was perfect. Really pepped that thing up. The larger jet really complimented the CVT upgrades well. I was pleased, and he was too.It has one of those valve covers that has the plug on the top and the bottom, to adjust the valves without having to take the valve cover off. The nuts on those plugs is around 1", and there is so little room to get a big wrench in there, that it's kind of impossible.
Does anybody else have a scooter that, because of the frame, a valve adjustment is a HUGE ordeal? I think valve adjustments are the hardest thing I have to do, on the scooters that have frame pieces all in the way. It's a huge pain on some of them.
