hi guys. i recently bought a Honda CG-125 Point Model 1990 in black color. Engine is unsealed but is in sound condition. bike had original Honda Made Carb for point, which i kept in house, installed CDI Carb in it to somewhat increase economy. running wise is too good. easily reach 90 with not much effort. however one issue i noticed. when i bought the bike the seller told me that gear shaft is issuing which can get changed for max of 1k budget. depends upon the type of shaft that i will put in. I noticed that bike is smooth sail in 3rd gear upto speed of 50 to 55, but when i use to stretch it more upto 60+ then a weird grunting sound starts until i shift 4th gear. in 4th gear that sound is heard until i exceed 70. upon speeding above the sound is gone.
i get the bike tested by 2 mechanics first one was at Noor Autos near Tabba Heart Hospital. He said k 3rd n 4th gear are worn out. need to put a new gear set to overcome this issue. however he also said k upon opening the engine ho sakta hai aur kharcha nikal aye, so atleast keep 6k to 7k in hand for this task.
however when i got my bike tested by another mechanic (jis se mera dost apni 125 ko set karata hai, and his point 89 model is in lush form) that mechanic said k its gear shaft is worn out. hardly 700 ka expense hai. it will get fixed else everything in bike is perfect. dont let the engine open by anyone.
what u guys suggest ? or does any one of you knows a better and authentic mechanic to detect n fix this issue.
Overall bike is ok if i ignore the grunting sound that some while 3rd n 4th gear. (sounds like shafts are rolling with friction) plz advice.