Just spent 5 days at the farm. Lots of trail making and riding. Everything was going well until last night. Since everyone else had been riding the buggy I decided to get on and ride before it got too dark. I was taking it out for one heck of a ride and it was doing well. Then the engine started to sputter and slowly died. I tried restarting and it barely ran and then died after I tried to give it some gas. Then I noticed somewhat of a squeak if I tried to start it and it wouldn't turn over any more. So, we pushed it back to the barn (1/4 mile).

Oh me oh my........ there was no oil in it

Now when I turn the key, it doesn't even turn over. I put oil in it and pushed it around (hoping that it would turn the crank and pump in some oil). But it still won't start or even turn over.

So....... this is gonna be an expensive reminder on basic maintenance I'm afraid.

I'm curious as to what I'm looking at. I'm sure that I'll need to replace the piston and have some work done to the cylinder. At that point it should just be completely rebuilt.
I'm trying to figure out if it would be cheaper to:
1= rebuild to OEM specifications
2= rebuild with aftermarket performance parts (possible big bore kit)
3= buy a new OEM engine and replace it
4= buy a larger engine and put in there (I currently have no knowledge of what would fit or how to do it)

The wife already told me that I need to do what is needed and buy what is needed to get it back up and running. She actually logged more seat time on it than I did this past week.


Any info or input is extremely appreciated. If I need to buy parts I'd like to get them ASAP so I can have it running by next weekend.

that happened to my wifes last year when my daughters friends went for a ride. I put a 155 kit and an a11 cam.

A 155cc cylinder body kit with piston, rings, and gaskets can be purchased for as low as $100, if that's all that is needed.

If the cylinder looks good and you just need the piston and rings you can get it all for $50 or so (+gaskets). But if you're gonna do it go for the 155cc upgrade!

Check out this guide for tearing it down to have a look at it: http://scootdawg.proboards.com/index.cg ... hread=5178

Yes, it's a scooter, but it's the same engine and the steps are basically the same. Ignore the 170cc straight-bolt-on part, as we can't do that on ours - he must have had some weird GY6 variant.

-Mike

What are the bottom end bearings in these things? Roller? Babbit? Other?

roller bearings.

You have to take a few things into consideration when you run an engine out of oil. You will have to look at the crank bearings, connecting rod, camshaft and camshaft journals/bearings, cylinder walls. Most likely you only toasted the piston and rings, but if you scored the cylinder walls you will either have to have it bored out or just get the 155cc kit. If everything else is good you could get away with the 155cc kit because it comes with a new cylinder. You will also have to look at why it ran out of oil in the first place???? If you have pretty good mechanical aptitude shouldn't have a problem. To check the clearences you will have to take measuments which require precision instruments.

Welcome to my world brother Been there done that... a few times now Not out of oil but blown just the same.

Your main concern will be the crank. The bearings are probly fine but they sometimes sieze at the pin. If the scare is bad then the case needs splitting.

If it's not in bad shape then you may just need some rings. For safty's sack I would do the whole kit, jug to gasket.

Your looking at about 650 after shipping for a new motor. 750-800 for a completely built motor. I mean built not stock. Thats shipping labor, and parts

Cheapiest would be a simple rebuild back to oem. If you need help I can walk you through any of the work

You should'nt have much to measure. Deck height and end ring gap. I had Tom Syc from Syc powersports set my end ring gap before he sent them out and the deck is min .025.

In these the bearings, rod, and crank are all one piece. This is why I built the motor. I fried the crank and I refuse to crack a case and go back stock

We need to pull it apart and see what we got

On the crank, the bearings and cam gear can be pressed off to remove and replace. The crank can also be split to remove the connecting rod, just needs to be re-balanced when being put back together.

The question is, how much would that cost? Every part and then have them pressed. Can you get the parts? Might be a deal if it's cheap enough. I like my stroker though