Quote:
Originally Posted by Le|Garage  ... I chose a lifan 138cc engine and upgraded a few things.
... the chinese bearings were replaced with NACHI bearings.
... The next step was to fit the 56mm Akunar piston.
... To finish off, I decided to take some weight off the crank by fitting an inner rotor and aluminum oil sling. (Standard oil slinger weighs 743g where the aluminum one only weighs 160g)
- Larger 4 prong nut on clutch basket (so that it's the same as the oil sling)
- Magnetic oil drain bolt (Highly recommend these!) |
Hi guys, I just bought an MSO 140SR with a Lifan 140 engine (55mm bore, "big valves" and 26mm mikuni carb). Engine questions out of curiosity:
* Are the chinese main bearings a known weakness? Who sells Nachi main bearings? That's a case split to put them in right?
* Who sells Akunar pistons, and how much lighter are they?
* To fit an inner rotor, is that simply a process of removing (pulling) the stock flywheel, and installing the "kit"? How ensure balancing?
* Is the oil slinger under the right side cover? Who sells the alum part? Please explain the larger nut needed on the clutch basket if using an alum oil slinger?
* Has anyone heard of fitting an extern oil filter inline with the cooler?
thanks in advance for any good tips/advice.