Blaster swap into YSR50

[kball]

I just got my frame mods finished to accept the blaster engine. Split the cases on the blaster engine I have and found one pair of the trans gears was chewed up. Good thing I have two engines to choose from.

I bought two blasters a while back to use as donors. I'll be getting the crank rebuilt, probably try the Oconnor porting explained in the videos I found. I'll be posting pics as I go.

 

[mr_3_0_5]

ive seen it done before they make mean little street bikes when finished.. get some pics man..

 

[yamaha28]

Sweet! Those little bikes look really fun, even more fun with that blasty engine! The more pics the better I:I

 

[blasterdemon7]

Cool. Should be fun when your done.

 

[kball]

Here it is as I got it:

 

[kball]

Started the teardown:

 

[kball]

All the hardware and wiring off ready for paint stripping:

 

[kball]

Frame sandblasted and ready for modifications:

 

[yamaha28]

I can't wait to see this thing running! I will be following this thread.

 

[yzrider]

god i was just thinkin about a swap like this, i love these things!

 

[kball]

Thanks! I wanted a YSR since I was a kid. Now they're all beat up junkers unless you go through them this much. I'll take a few more pics later tonight if where i'm at now.

 

[kball]

Got my bare cases cleaned up and set in the frame. Everything looks sweet and there's lots of space with this engine. It's actually not a lot bogger than the stock 50cc externally.

 

[xKroniK13x]

Looks to be on it's way to a wicked little machine. Can't wait to see the outcome dude.

 

[kball]

Followed the O'connor videos and cleaned up my ports following his instructions. Turned out decent, it's hard to have a steady hand, just take it slow and don't get too greeedy. I'm sending it out to get bored now and get the new rod pressed on so I can get the engine back together.

 

[brandoz28]

looks like it'll be a riot when it's done!!!


did you get that pipe off of ebay? there was one on there that was designed for this swap

 

[kball]

Haha yeah man, I bid like crazy on it and won. Tommy Crawford isn't making these anymore and they work sweet. It was a good score even though it's a bit beat up. I'm stoked to ride this thing in the summer.

 

[slickerthanyou]

So this bike is going from a 50cc to a 200cc??

That should be a fun ride!

 

[yamaha28]

What did you use for the porting? Did you order the tools in ken video?

 

[kball]

What did you use for the porting? Did you order the tools in ken video?

I already had all the burrs to do the porting here. Just never done a blaster before.

 

[kball]

Got my cases stripped down and glass beaded em at work last night. Ready for new bearings and the crank when I get it back.