how to tell if a motor is seized? with pictures

[justinkr58]

i have just picked up a scooter for$ 80 they said it was seized..

so how do I tell if the motor is truly seized?

also does anyone know how to tell the cc of the motor, it has no cc markings on the block.

it is called Dadogs, i think it is titled as a 125cc but i cant find any markings.

and the only replacement scooter motors on ebay are 150cc or 110cc.


so i took everything off the motor (spark plug, exhaust,carb) then put a wrench on the output shaft and manually turned the motor and it is very difficult to turn,( i would say 50-100 ft lbs on my torque wrench.

so questions

is there a rebuild kit for this motor? is that what it would need? a new piston/parts

or
if i bought a 150cc scooter off ebay would it bolt right up to the cvt transmission on this scooter?

if i got a 110cc off ebay would it bolt right up to the existing transmission?

HERE ARE PICS OF THE MOTOR

[FastDoc]

All I can say for sure is that its a 125. The marking shows up in one of your pics "124cc"

[Wild_Alaskan]

take the head off (the part with the valve rockers and cam chain) and take a picture of the piston and cylinder. then you may be able to tell

[BillR]

Originally Posted by Wild_Alaskan

take the head off (the part with the valve rockers and cam chain) and take a picture of the piston and cylinder. then you may be able to tell

Yep, gotta getta look at the cylinder walls. From your description of how the motor moves, though, it sure sounds like it did seize.

As far as what will bolt in, you'll need measurements of the motor-mounts from both engines to see if they match up.
Here's all I could find on : FIFIC Motors
And this about Dado Scooters
Looks like they've not been around since '04 or '05.

As FastDoc said, it's a 124, in the pic.
Bill

[justinkr58]

thanks everyone. can anyone tell me for sure what motor will bolt right in?

[Wild_Alaskan]

take an picture of the overall motor from further back

[Weldangrind]

X2.

It looks like a horizontal Honda clone, but a total engine shot will tell us for sure.

[Reveeen]

Here are the engine measurements:

1st set of pictures, paying specific attention to the forth (motor mount) picture:

http://www.discountscooterparts.com/E1000.htm

Now that we have determined a 150cc GY6 engine will fit in there, you have to measure your case length:

Long case (11.25 inches)

http://www.partsforscooters.com/150c...&category=8423

Short case (9.5 inches)

http://www.partsforscooters.com/150c...category=84231

(there is a shorter case, but it would be a buggy motor, and not suitable for a scooter)

And yes, it would be nice to put a 250cc engine in there, but it won't fit, and is water cooled.

[mizke]

Originally Posted by Reveeen

And yes, it would be nice to put a 250cc engine in there, but it won't fit, and is water cooled.

if you have access to welding and cutting tools, you can make almost anything fit..

[Weldangrind]

Thanks for the links Reveeen. I had no idea that the GY6 was available in two lengths; is the larger meant to accomodate a bigger diameter wheel?

[Reveeen]

Originally Posted by Weldangrind

Thanks for the links Reveeen. I had no idea that the GY6 was available in two lengths; is the larger meant to accomodate a bigger diameter wheel?

3 lengths actually, the really short ones are used for buggies/trikes, the shorter of the two (9.5 inch) can accommodate up to a 12" wheel with a low profile tire/ 10 inch high profile is "the usual", the longest one will do a 13" wheel with a high profile tire/14" with a low profile tire.

The "preferred" one for swaps is the long case, though if you wanted stealth, the shorter one will fit better where a 50cc used to be.

if you have access to welding and cutting tools, you can make almost anything fit..

The 250 is a water cooled vertical motor. You WILL lose any under seat storage and you will have to hang a rad and plumbing somewhere. At some point the exercise becomes pointless, though this might be more to your liking:

http://www.lambrettainnovation.co.uk...ge.php?pid=105

RG500

[Weldangrind]

Whoa! An RG500 in a Lambretta? 8O Good luck stopping.

Here's my favourite Vespa: It's in Spanish and Italian, but you'll get the idea.

[Reveeen]

Originally Posted by Weldangrind

Whoa! An RG500 in a Lambretta? 8O Good luck stopping.

Blow up the pictures.....those guys @ Lambretta Innovations have a pretty good handle on the business of stopping.

I like their 50cc Vespa:

http://www.lambrettainnovation.co.uk...age.php?pid=23

http://www.rotax.com/en/Engine/2004/...ine.Models.htm

From what I gather, scooter design does not make for reliable air cooling of big motors (big in size, or horsepower)

[FastDoc]

How long has Wild Alaskan been building Vespas? :roll:

[justinkr58]

here are some pics of the motor

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