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Scooters - 50cc => Agility 50 => Topic started by: Jiffycake on July 01, 2011, 04:03:15 AM

Title: How much mileage is too much on an engine?
Post by: Jiffycake on July 01, 2011, 04:03:15 AM
So I am being offered a Kymco 125 motor from a a125. The bad part is that it has 4k miles on it. Would you rebuild this motor before you put it in a daily driver? By rebuild I mean crank, crank bearings, rod, top end, etc.
Title: Re: How much mileage is too much on an engine?
Post by: slugrocket rob on July 01, 2011, 04:32:58 AM
It should be good for well over 4K. I have seen vespa 125 cc engines go well over 20k. My kymco 163cc (people s200) has over 10k. If it is running good, don't fix it. You will hear and or feel when you need to do some top / bottom end work. KYMCO engines are durable little monsters.
Title: Re: How much mileage is too much on an engine?
Post by: Jiffycake on July 01, 2011, 04:38:28 AM
Alright. That makes me feel better. I guess the old saying holds true "If it ain't broke, don't fix it"

Also, my bad the motor actually has 2500 miles. I was reading the km as miles on the odo.

Now, would you up a 125cc to a 150cc piston/cylinder on the 2500 mile motor without replacing the crank bearings?
Title: Re: How much mileage is too much on an engine?
Post by: axy on July 01, 2011, 09:19:59 AM
Alright. That makes me feel better. I guess the old saying holds true "If it ain't broke, don't fix it"

Also, my bad the motor actually has 2500 miles. I was reading the km as miles on the odo.

Now, would you up a 125cc to a 150cc piston/cylinder on the 2500 mile motor without replacing the crank bearings?

I hope that you are joking.

Most of these scoots are driven in Africa and Asia by people who do not use Internet and write on forums.

They do few thousand miles monthly with those scoots.

Do you think that it is neccessary to rebuild engines every few thousand miles?
Title: Re: How much mileage is too much on an engine?
Post by: slugrocket rob on July 01, 2011, 03:49:53 PM
again, with that low milage, there should me no reason to replace your crank (big end) bearings. Work on the top end will not require cracking the case. When (if) you get a top end upgrade kit, It will most likely come with new wrist pin (little end) bearings. Hope this helps! scoot on!
Title: Re: How much mileage is too much on an engine?
Post by: ianmac on July 01, 2011, 05:56:39 PM
Sounds like a good deal... buy it and forget it.
Drive until you have a problem or arent happy with the performance!
Title: Re: How much mileage is too much on an engine?
Post by: mono on July 03, 2011, 12:13:12 AM
4000km equals brand new in my book  ;D

edit : no joke, these engines are reported to run for 50.000..70.000km's when treated right.
Title: Re: How much mileage is too much on an engine?
Post by: racewalker on July 04, 2011, 01:37:49 PM
My S125 has 30000K on it now and doesn’t even use any oil yet. It starts and runs like new. One question would you rebuild your car engin every 20000K?
Title: Re: How much mileage is too much on an engine?
Post by: blue on July 05, 2011, 01:35:34 PM
I had too rebuild my engine after 11000.km I now have 20000 hope it holds up a little longer Ill ride tell it dies. Im hoppeing for one more summer out of it.
Title: Re: How much mileage is too much on an engine?
Post by: sidthesloth on July 05, 2011, 02:32:21 PM
G'day blue, was your rebuild because of the crankcase crack, or was it the crankshaft?
Title: Re: How much mileage is too much on an engine?
Post by: ianmac on July 08, 2011, 03:56:33 PM
Its too much when it doesnt run anymore
Title: Re: How much mileage is too much on an engine?
Post by: streido on July 13, 2011, 02:21:38 PM
My 50cc Agility has over 14,000 km on it now, still running sweet.
Title: Re: How much mileage is too much on an engine?
Post by: blue on July 14, 2011, 12:38:44 AM
G'day blue, was your rebuild because of the crankcase crack, or was it the crankshaft?



the grank shaft was bent and it was running good at the time of rebuild but it was running with a lound sound.runns sweeter then ever now after the rebuild they did a good job but took for ever geting the scoot back like 6 monthes later not fun.
Title: Re: How much mileage is too much on an engine?
Post by: sidthesloth on July 14, 2011, 12:57:07 AM
So that is just an unusual incidence, nothing to do with poor quality. The time frame is a big let down, was that the dealer's fault or Kymco's?
Title: Re: How much mileage is too much on an engine?
Post by: 2010Iron883 on July 14, 2011, 12:45:59 PM
16,600 on ine and runs like a top. My bike is a agility 125 though. Heck the warranty on mine ran for 2 yrs or 20,000 kilo so they run a great while if they are taken care of.
Title: Re: How much mileage is too much on an engine?
Post by: blue on July 19, 2011, 07:02:31 PM
So that is just an unusual incidence, nothing to do with poor quality. The time frame is a big let down, was that the dealer's fault or Kymco's?
Ill blame it on the dealer because they sent the scoot to 2 shopes befor it got done right.but yet ounce at the kymco shope it stell took to long.