New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
60cc Tuning
by: mgsiciliano - Jul 10, 2013 20:32:41 GMT -5
Post by mgsiciliano on Jul 10, 2013 20:32:41 GMT -5
Thanks Alley..... The 49cc carb came with a 78 ...do you think that 78 is too much? I figured that because the.... 49cc = 78 jet then 60cc = 80-  I will tighten the valves to .003 and try the 72/75 Right now it is free flow with , and .004/.005 valves |
|
New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
60cc Tuning
by: mgsiciliano - Jul 10, 2013 19:52:06 GMT -5
Post by mgsiciliano on Jul 10, 2013 19:52:06 GMT -5
Anyone have a 60cc with a free flow filter?
I need jetting and Valve adjustment advice...
I can only get her up to 35 mph and she is super loud
|
|
New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
Post by mgsiciliano on Jun 28, 2013 21:08:43 GMT -5
I actually just installed the free flow, because no matter what valve adjustment/ af screw/jetting I did it would bog...
I hope the spacer is the culprit....
What size jet should I use for a secret 60?? 80? 78?
|
|
New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
Post by mgsiciliano on Jun 26, 2013 20:56:34 GMT -5
I finally decided to strip down my entire engine and look for issues.... I removed the intake manifold, and found that the spacer was cracked and had split.... in many places Unfortunately as i removed it, some peices fell into the intake valve, and I was forced to strip back to the piston to remove them. COULD THIS CAUSE A POOR VACUUM, THEREFOR LEAN GAS SUPPLY, AND LEANING OUT / STALLING AT WOT?? I replaced the spark plug with an iridium... I replaced the airbox with a freeflow rejetted the carb at and adjusted the valves to .004/ .005 QUESTION: When installing the cam....the "T" on fan lines up with the casting pin TWICE... once when the hole in the cam faces the front wheel, and also when the hole in the cam faces the rear wheel.... I feel a bit slow for asking this, but is that normal... how are you supposed to set the timing if it lines up every 180 degrees?? I set the cam hole facing forward when the piston was CLOSEST to the valves.... IS THAT RIGHT??? |
|
New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
Post by mgsiciliano on Jun 24, 2013 10:22:26 GMT -5
What cc engine do you have now? My carb came with a 78 main jet too, but I only have a 60cc
It's a lance sport
|
|
New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
Post by mgsiciliano on Jun 23, 2013 22:07:09 GMT -5
Side note... the chain tensioner couldnt have anything to do with this right?  I dont think so, but when I reinstalled it, it seemed sticky ( wouldn't move up and down well) Just trying to rack my brain for ANYTHING that could have been reinstalled wrong, or that I missed... |
|
New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
Post by mgsiciliano on Jun 23, 2013 22:00:42 GMT -5
ok Gents... EVERYBODY PLEASE POST A REPLY!!!!! I'm going to give this one more crack... PLEASE HELP ME WITH YOUR IDEAS!!! Ive ordered a free flow air filter, and an iridium plug... I have a main jet kit, so I have all the variables. www.amazon.com/gp/product/B00AQ52W00/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1Can you please tell me what "standard" settings I should apply to... 1) Valve Adjustment 2) Main Jet I will do chops off of that... Also what do you think of the sound of the valves in the youtube videos?? does it sound too clicky? |
|
New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
Post by mgsiciliano on Jun 23, 2013 13:00:45 GMT -5
What type spark plug is best for 60cc??
Should I replace the coil and plug just to be sure?
|
|
New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
Post by mgsiciliano on Jun 22, 2013 20:22:27 GMT -5
Did you also replace the rubber? The fuel and vacuum lines? Did you check for vacuum leaks with carb cleaner? Does it bog when revving it up on its stand or just when you are on it? Did you drain and replace the gas with good premium fuel? Can you see the fuel flowing through the filter? Did you check the spark plug how it reads? Make sure all electrical connections are good, especially to the coil. Trying to think what else it could be. What is weird is I don't hear a bog, a vraap, or back fire. So, it sounds like a restriction, like your electrical is shutting down or restricting spark. Can you get a vid of the phone closer to the exhaust and engine when you rev it on its stand? Ill get that video tomorrow... all the rubber seems to be good.. there is good vacuum and fuel flow... Ive always used  gas.. would the scoot idle well if there was a coil problem? The lights work well, but the horn was weak when I ran with out a battery. Maybe it is a coil problem? |
|
New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
Post by mgsiciliano on Jun 22, 2013 18:54:10 GMT -5
Right... the Biggest hole on the Cam is facing the front of the scooter... and the two small holes are lined up with the case...
Spark is good and fuel filter is brand new, and facing the right direction...
Scooter was shredded when i bought it... I replaced the crank, jug, piston, valve head, rocker arms, carb, fuel petcock, filter, and fan shroud..
|
|
New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
Post by mgsiciliano on Jun 22, 2013 15:38:05 GMT -5
no luck with anything... Diaphragm was brand new looking and fit normally... I set the valves to .004 and .005... then tried main jets 70,75,78,80,and .....nothing  THEN I set the valves to .003 and .004 and tried main jets 70,75,78,80,and .....squat  Then I set the valves to .025 and .003 ....and that sounded like I SAWED OFF the muffler ....  so I gave up and set the valves back to .004 All I can think is that the exhaust is not big enough... or the timing is somehow wrong... Im setting the cam to the right position ( big hole forward) and the fan is set to "T" I am completely out of ideas so I have listed her on CL... I have put about 45 hrs into it , and im into it total $450 I think its time to take the first 500 that walks through the door..... I would love to have the secret 60...but at this point Im out of ideas |
|
New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
Post by mgsiciliano on Jun 21, 2013 21:25:50 GMT -5
As long as the hose is connected to the bottom of the carb, you will be fine... it is used to drain gas from the carb when preparing the scoot for storage....
A fuel filter is VERY cheap... buy a new one, trim back the hose on the intake, and the supply side to ensure a good fit, and then secure the connections tightly with zip ties.
if you take the old filter to a home deopt, lowes, autozone, or pepboys, they usually have one in stock... or if you can wait, order a replacement on ebay or scrappydogscooter
cheers
|
|
New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
Post by mgsiciliano on Jun 21, 2013 20:16:23 GMT -5
I actually already adjusted the screw on the carb to get the best idle....
The carb is 100% new, so I doubt that the diaphragm is bad... but it is worth checking.
The carb came with a 78 main jet installed, so I asummed that a 78 was designed for the 50cc engine...
If you think its could be the issue, can try smaller main jets and see if that helps
tomorrow I will try a 75, and 70 ( dont have a 72)
|
|
New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
Post by mgsiciliano on Jun 21, 2013 12:48:03 GMT -5
I restriced the air flow completely and poked more and more holes in the tape until it ran the best, but even then it was only 10 mph before choking
|
|
New Rider
Currently Offline
Posts: 19
Likes: 0
Joined: May 30, 2013 9:48:12 GMT -5
|
Post by mgsiciliano on Jun 20, 2013 21:32:02 GMT -5
# Jetting - #80 Jetting - I did a BBK (60CC) and cant seem to get any throttle power. It will bog around 10 MPH no matter what valve adjustment, airbox, A/F or jetting.... I have the valves adjusted to .003 intake and .005 exhaust Please watch the videos and let me know if there is any hope, or its time to throw this in the dumpster! |
|
gas..