OOLLLD lol. YT the same principals work for the blaster as for drilling the ports.
The port job came out alright, but really needed a pipe and more compression. I ended up opening that cylinder to far. I was a fool and cut the transfer out to far on the base of the jug. I've still got it. Either the cases will needed welded up and machined to match (ideal) or the jug needs welded up and machined. It really needed a high comp head.
Basically, I took off the part outlined here.
I ended up going with the pot job you see in avatar for that machine. The auto clutch was a pita to deal with. I removed several weights so it would have a nice rpm stall, at the expensive of clutch life. I also made my first 2 stroke pipe for that machine. Hideous! lol. It much better than the stock pipe... But the only welder i had was an AC 225 Lincoln arc welder. Try that on some sheet metal lol.
On a side note, the YT175 piston and the blaster have the same bore and piston pin and pin location. The YT has a taller dome on the piston. It may make for a higher comp blaster build, Port timing wouldn't be affected.
Thew YT175 cylinder will bolt to the blaster with spacers. It is set up for a 50mm stroke opposed to a 57mm though. The exhaust port can be opened more than the blaster. The reed are waaaay smaller. I'd argue that they are 2/3rds the size of a stock blaster cage. I did make some carbon fiber petals. Eventually I stuff blaster reeds into the intake after thinning the walls and adding a reed spacer. I also ran either a 30 or 32mm carb (i can't recall). It was tuned for 8500RPM and a wiiide power band due to the auto clutch. All the info is on 3wheelerworld.com.
After 2 years of WOT, i grenaded the piston. I haven't focused on it since i got my Tecate 3 lol
The YT had inferior sleeve and bottom end bearings. If i was going to build that YT175 machine back up... I'd bolt in a blaster motor, it's a damn near drop in (already test fitted). Then we can talk about a good platform to start from!
The YT175 also lacks a swinger... With the blaster swinger fitting up with the engine.. Why not? I personally think that would be a ridiculously fun ride. The YT175 suffered from bad engine placement due to honda patents. All the Tri-moto are very wheely happy machines.
As for video's
Here's a few of one of the blasters we built up. People still don't believe it, even after seeing it. It also throws that pipe dyno shootout info we seen out the window. The FMF fatty seems to do pretty good at 10.5k RPM.
Kenny is our test jocky. He's fairly experienced and knows how to deal with power very well. He spent a good deal of his earlier years growing up in Waynoka OK, at the dunes. He's the proud owner of a 86 ATC 250r (and a bunch of other junk lol) and is building a cr500 motor for it.
Guy we sold that blaster to got it dynoed at 32hp. The head wasn't chambered, just milled. CDI was stock, just advanced timing. Pipe, even though it pulled hard, could have been better flowing. We've got a similar build with a lower comp, but chambered head and drag pipe. It's waaay faster all around compared to the blaster in the videos. I wish we had some videos of it. It's under the knife and has been for some time. That whole life thing has been happening.
