I have a 66cc. Grubee engine. It needs half-choke to run well. Are any oversize jets available or can someone suggest a drill number to open it up properly? [email protected]
need jet advice
- Thread starter trackfodder
- Start date
I had to drill out the main jet on my cns2 on a 48cc grubee to get it to run right. The stock on mine was a #70 drill bit, I started with a #69 and doing runs and plug checks till it ran right & the plug was light to med. brown. I ended up at a #64, I know it sounds big but with the sbp air filter thats what it likes. Biknut did alot of work on a 66cc that may help you out.
http://motorbicycling.com/f34/omg-i-have-tune-cns-help-30169.html
http://motorbicycling.com/f34/omg-i-have-tune-cns-help-30169.html
Last edited:
Here's a cheap set that will get you by.
Amazon.com: 21 Pc Mini Drill Bit Set Tools Precision Tool Model Car: Home Improvement
Amazon.com: 21 Pc Mini Drill Bit Set Tools Precision Tool Model Car: Home Improvement