Help With Pulley Alignment on predator 212 / YD3203

[panchothedog]

Did you need to drill four holes in the engine mounting plate for the four inner slots? I guess that is what I am not clear about.

On this kart I think I did. It's been 6 years ago, so not sure. Looking at my.photo,. It doesn't look like the downward bolts went straight into the engine plate slots. On a second kart ( A Tomberlin Firefox ) that had a 6hp. Mitsubishi engine and presented the same problem, the downward bolts went straight into the slots. The spacing on the plate is the same as common kart or bike motor mount.

 

[panchothedog]

Man thank yall for all the suggestions! I ended up deciding to try the motor plate route at Pancho’s
suggestion and ordered a few different adjustable motor plates off Amazon (so I can return). The issue I’m now running into is that the chain is only maybe 3/8 to 1/2” away from the frame… the motor plates either hang out over the frame too much and are hitting the chain, or the minimum amount of adjustment for the motor is causing issues with it running into the chain… I don’t know enough about chain sprockets on these things to know that there may or may not be an obvious solution… Is it easy enough to move the chain and sprockets towards the driver side wheel? Or is that a difficult undertaking? The small block motor mount that Pancho originally suggested may work…my frame looks to be right at 6” in width and this bracket is 6.5” wide with what looks like the motor mounts off center in a way that would help https://www.gopowersports.com/fully-adjustable-motor-plate-small-block/

I did also find a new sprocket for the driven pulley that seems to be quite a bit thinner than the existing one… So I may today try taking the driven pulley off and replacing the rear sprocket and see how close it lines my pulleys up. Someone had asked for pics to see what’s on the passenger side of the motor, here they are

[side note] this has made me much more hopeful that the year the AI robot takes us all over is further down the road that we think…y’alls knowledge puts ChatGPT to shame

3/8 to 1/2" is more than enough. On a couple of my karts, the chain is no more than 1/8" from the back side of the driven clutch. With decent sprocket alignment, in my experience the chain doesn't move side ways very much. Maybe not at all.