Alright, so let me tell you about this Yamaha Warrior 1700 HP build I messed around with. Buckle up, it’s a ride.

It all started when my buddy challenged me. He was all like, “Dude, you can’t get a Warrior 1700 to push serious horsepower.” I was like, “Hold my beer.” Well, not really beer, more like lukewarm coffee, but you get the gist.
First things first, I tore that engine down. Complete strip. I mean, everything was on the workbench, looking like a motorcycle exploded. I checked all the internals, measured clearances, you know, the whole nine yards. Found a couple of things that were a little off, but nothing catastrophic.
Next up was the fun part: beefing things up. The stock pistons and rods weren’t going to cut it for the kind of power I was aiming for. So, I sourced some forged pistons, good for high compression, and some heavy-duty connecting rods. Slapped those in, making sure everything was torqued to spec.
Then came the head work. Ported and polished the intake and exhaust ports to get the air flowing better. New valve springs, titanium retainers – the works. Basically, I wanted that thing to breathe like a marathon runner.
Now, about the turbo. I went with a Garrett GT3582R. It’s a decent size, not too laggy, and can deliver some serious boost. Fabricated a custom manifold to mount it, which was a pain in the ass, let me tell you. Welding cast iron is not my favorite pastime.

Fueling was another challenge. The stock injectors were definitely not going to be enough. So, I swapped them out for some high-flow injectors and installed a new fuel pump to keep up with the demand. Also, an adjustable fuel pressure regulator to fine-tune things.
For the ECU, I went with a standalone system. Something that would allow me to control everything: fuel, ignition, boost. Spent a good few days mapping that thing on the dyno. Tweaking here, adjusting there, until I got it running smooth and making good power.
The exhaust was all custom. Big diameter pipes, straight through. Loud as hell, but who cares, right?
So, after weeks of wrenching, swearing, and probably drinking too much coffee, it was finally done. Took it to the dyno, and man, did it deliver! We were seeing numbers in the ballpark of what I was aiming for. It was wild!
Of course, it wasn’t all smooth sailing. Had a few issues with boost leaks and some tuning quirks, but eventually, I got it dialed in. The thing’s a beast now. Torque for days, and pulls like a freight train.

Here’s a quick rundown of what I did:
- Engine teardown and inspection
- Forged pistons and heavy-duty connecting rods
- Ported and polished cylinder heads with new valve springs and retainers
- Garrett GT3582R turbo with custom manifold
- High-flow injectors and fuel pump
- Standalone ECU
- Custom exhaust
Was it worth it? Hell yeah! Would I do it again? Probably not anytime soon. But it was a fun project, and I learned a ton along the way. Plus, now I have a Yamaha Warrior 1700 that can probably outrun a lot of sportbikes. Not bad, right?