Starting help

Those pics tell me that the motor has not been warmed up correctly before being ridden.

A hot piston in a cold bore will scuff the bore and deposit skirt material on it.

Constant non warm up periods will deposit even more material on the bore for the rings to scrape off.

Shards of material get into the ring grooves and cause them to stick, some shards will make their way into the crankcase and will destroy the bearings.

Thank you you have been a big help since these problems have started. Sadly it is not my bike it's a friends but he has zero mechanical skills. Its frustrating to know after getting it running from one issue he was able to cuase another so quickly. What is the cylinder made of? Is it honable? The service manual doesn't say if it is or not it just says to rebore or replace.
 
Future reference for you and others, leak test before teardown and before starting rebuild to check for cause/problems. Your failure is also known as a four corner seize. As mentioned, lack of proper warm-up. Can also be caused by rapidly/overly cooling a properly warmed engine. This happened to my son on the lake in 0* WFO in 6th gear:( Always laugh at the name, as a circle (pisto) has no corners. But if you look at the area of the piston where the scuffing is, you'll notice that is where the most material/mass is.

I have heard this before but as stated earlier in the thread I have had so issues finding the parts I need to make the tester. I wanted to do what I could with what I had so opening it up made the most sense. And of course I discovered the mess inside. I figured I could put it back together and test it once I get the rest of the parts for the tester.
 
I'm pretty sure the grooves are too deep to hone out so I have a cpl options and would like your guys opinion. Do I a get a new top end or have the current one rebored which will mean ill have to go up in size on the piston to fit getting a little extra power in return? Under $300 for all new and under $200 for reboring and little extra power. Both prices include all necessary gaskets and such. On another note i'm actually starting to like this little machine (besides all the issues which isn't her fault) and think i might snap one up for myself for the trails. I put an engine from a Suzuki GSX-R600 in my personal quad so off roading is no longer an option haha
 
If the scoring is deep get your machinist to tell you what size piston to order and when the piston is in their hands, have them do the re bore.

Sorry to inform you that the power increase you gain from a re bore is minimal.
 
2nd what blaaster said about the Cylinder and Piston.

If your serious about getting a Blaster for yourself, Look around. You can find them blown up, or in basket cases pretty often. I've bought 2 in the last 4 months. Just have to be paitent for a good deal to come along, then Jump on it when you get the chance. So far its worked out well for me.
 
If the scoring is deep get your machinist to tell you what size piston to order and when the piston is in their hands, have them do the re bore.

Sorry to inform you that the power increase you gain from a re bore is minimal.

The place that does the boring provides the piston as well as part of a package deal. Minimal power is fine the biggest thing I wanted to know was if reboring or going with all new was recommended. Sounds like reboring wins.
 
The place that does the boring provides the piston as well as part of a package deal. Minimal power is fine the biggest thing I wanted to know was if reboring or going with all new was recommended. Sounds like reboring wins.

If you have bores left, the most cost effective way is to bore, hone and fit new piston and rings.
 
The place that does the boring provides the piston as well as part of a package deal. Minimal power is fine the biggest thing I wanted to know was if reboring or going with all new was recommended. Sounds like reboring wins.

i would say if you are keeping it around for a while and the budget allows, start with a fresh cylinder, that way you can safely get it ported knowing you have more bores left in the cylinder for future wear. if you bore your cylinder now to the maximum size, you wouldnt want to waste money porting it and you would know in the back of your head that you need to keep money aside for the next rebuild to replace the cylinder, or sleeve it