Okay, let’s talk about the TTR 150. I’ve been messing around with dirt bikes for a while now, and I recently got my hands on a TTR 125 that I decided to mod into a 150. It all started because I was itching for a bit more power but didn’t want to jump to a completely different bike. I like the feel of the TTR, you know?
So, I started digging around to see what my options were. I found out that you can actually mod a TTR 125 into a TTR 150, so I thought that sounds interesting to try. I heard you get better power while keeping the same basic bike structure and feeling.
First thing I did was look for a decent 150cc big bore kit. I went through a few forums and review sites to see what other people were saying and what they used. Finally, I settled on a kit that seemed pretty popular and had good feedback. I bought it from a local shop. I prefer to do that instead of just ordering online, you know. It’s good to support local guys when you can.
Once I had the kit, the real fun began. I cleared out my garage, got all my tools ready, and started taking the bike apart. It was a bit of a mess at first, oil and grease everywhere, but I’ve done this kind of thing before, so it wasn’t too bad. I carefully removed the old cylinder and piston, making sure to keep track of all the bolts and parts. It’s easy to lose stuff if you’re not organized, trust me.
Here’s how I tackled the installation:
- Cleaned Everything: Before putting in the new parts, I made sure everything was spotless. Any dirt or grime can mess things up, so I spent a good amount of time cleaning.
- Installed the New Cylinder and Piston: This was a bit tricky. I had to make sure the piston rings were lined up just right. Then, carefully put the new cylinder on. It took a bit of wiggling and adjusting, but I finally got it all lined up and bolted down.
- Reassembled the Engine: After getting the big stuff in, I started putting everything else back together. I double-checked all the connections and made sure every bolt was tightened just right.
- Adjusted the Carburetor: With the bigger engine, the stock carburetor settings weren’t going to cut it. I had to re-jet the carb to make sure the engine was getting enough fuel. This took some trial and error. I’d make an adjustment, run the bike, make another adjustment, and so on until I got it running smoothly.
The first time I fired it up after the mod, I was a little nervous. But it started right up and sounded pretty good! I took it for a test ride, and man, what a difference! It felt like a whole new bike. The power increase was noticeable, especially in the low and mid-range. It just pulled harder, you know? It was exactly what I was hoping for.
Since then, I’ve put a bunch of hours on it, riding trails and just messing around. It’s been holding up great. I did a few other small mods, like a new exhaust and some suspension tweaks, but the big bore kit was the main thing. I can honestly say it was worth the effort. I was able to turn my TTR 125 into a TTR 150 without breaking the bank.
Final Thoughts
If you’re thinking about doing something similar, I’d say go for it. Just make sure you do your research, get a good kit, and take your time with the installation. And if you’re not comfortable doing the work yourself, find a good mechanic who knows what they’re doing. It’s not a super complicated mod, but it’s definitely something you want to do right. But yeah, modding my TTR 125 into a 150 was a blast, and I’m really happy with how it turned out.
