a few years back, I was gifted an ASTRA 125 (I believe) scooter... though if I were to go out and buy a scooter on my own, it would not be this one (especially after finding it so difficult to find parts, etc for this brand). anyhow, I managed to track down the importer and was ultimately able to order a few much needed switches and brake pads. in the process, I've been inspired to consider beefing up the motor so to speak. which puts me at square 1 what type of motor does this thing have? you see, somehow whomever sold the scooter initially asked that the paper work indicate that it was a 49cc motor... after speaking with the importer, it turns out that the only models that astra offers are a 125cc and 150cc... intuitively I would imagine that this is would have to be bigger than a 49cc, as it tops out at roughly 45-50mph (75 km/h), not to mention that when I brought it to a repair shop when I first acquired it, the technition was certain it had to be closer to a 150cc.
so, I looked over the motor and found a serial number etched into the motor on the gear side... it read: 139QMB followed by *05046017*
I googled both and only came up with info on the first part (139QMB) and it appears this may be a honda style motor of the GY6 nature??
also, when opening the stock air box to check air filter, there was the following serial number: 17211-GY6-9400 (further confirming my best guess as to it being a GY6 style motor)
anyhow, growing up around cars and v-8 motors and the likes, I was thinking about potentially changing out the air-filter and exaust in hopes to give the bike a little more pep... upon finally discovering this forum and reading through some of the many very helpful threads, I'm beginning to really wonder if I should even bother (as I'm finding that re-jetting may be necissary to offset air fuel balance, etc... not to mention all the sensitivities of changing roller weights, springs, etc when it comes to the transmission)
ultimately, if anyone could help me confirm the size of this engine, that would prove extremely important before anything else... from there, if anyone has opinions with regards to intake and exhaust options that may be appropriate... that would probably be a logical next step
and of course, if the suggestion to leave the thing alone and just enjoy it, would also work
so many thanks in advance!
08-07-2008, 09:09
