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  1. ironbutt

    Selling NEW Predator 670cc Engine

    I purchased this engine from Harbor Freight for $699 back in January for a project that never got started. It has never been started...no fluids added...never run, only unboxed. I did cut the muffler off of the headers but I will include flex exhaust hose with the engine so you can connect and...
  2. ironbutt

    Selling Motovox Mini w/ Predator 212cc

    Ok, I've had fun with this for the past year or so, especially camping. But I live in a second floor apartment and don't have room for this to sit idle most of the time. I bought this Motovox 80 over a year ago and replaced the engine with a Predator 212 right away. Everything else is stock...
  3. ironbutt

    Safe to remove 670cc fan shroud and impeller?

    I understand that the impeller fan and cooling shroud are critical to these engines when they are being used in a fixed or stationary way (e.g. generator or pressure washer). But if I will be using it on a motorcycle with constant air/wind blowing over the engine and oil radiator, is the...
  4. ironbutt

    Tach on a 670cc

    Given that the Predator 670cc has two spark plugs, what's the ideal way to attach a tach? :cheers2:
  5. ironbutt

    Tach that calcs speed

    I'm using a Predator 670cc on my old Honda motorcycle. It will have a battery and lights...to be used on the street. I'd like to hook up a tach with a speedo conversion on it rather than use my cell phone app. Is there a simple electronic tach, like the ones that wrap around the spark plug...
  6. ironbutt

    Clutch for Predator 670cc?

    OK, so I'm going to install the Predator 670cc engine in my 82 Honda Sabre roller. I'm working on a shaft to chain conversion using the bevel drive differential pulled from the original (dead) 750cc V4 engine. I'll connect the final drive sprocket to the new engine via a jack shaft. But, what...
  7. ironbutt

    Ironton 420cc?

    So, I have a Predator 212cc in my Motovox and I'm very happy with it. But, I have another project that needs a bigger engine...an old 1982 Honda Sabre roller. The engine has been pulled and it is ready for a donor engine. I'm thinking that a 390/420 is as small as I can go for a motorcycle...
  8. ironbutt

    Reversing Engine PTO Direction

    So...I'd like to be able to reverse a Honda clone's PTO direction by rotating the engine 180 degrees. This would have the cylinder with air filter facing forward rather than backwards. There are several reasons to do this, one being that my gear box is oriented clockwise rather than...
  9. ironbutt

    Disabling Governor VS. Removing Governor

    No this is not about "The Walking Dead". I've got a Predator 212cc on a Motovox MBX10. According to my cellphone GPS speedo app I'm not going above 28mph with the stock configuration (which feels pretty fast btw). I'm not excited about pulling and opening up the engine to remove the complete...
  10. ironbutt

    Chain Broke!

    So, I was riding my 212cc Motovox for only the second time and the chain broke. I was on a trail with pretty big rocks and I think it broke because my rear tire stopped against a big rock before bouncing past it. Could my #35 chain break because of the rear tire being stopped? It wasn't TOO...
  11. ironbutt

    Motovox Predator Upgrade

    Well, I got my new MBX10 upgraded to the Predator 212cc. I'm in an apartment, and did all of the work in my second floor bedroom! Took the bike out to a nearby recreation area and fired it up. It started on the first pull! Here's a link to some video on it running...
  12. ironbutt

    Motovox closing shop

    I exchanged emails with them this weekend regarding when their new bike was going to be available and they replied that they are closing up the Motovox business and starting up another one, I think was motoped.com. I was looking forward to getting more products from them as I'm very happy with...
  13. ironbutt

    Can I use a Jack shaft as a swingarm axle?

    I'd like to add a swingarm to my Motovox 212cc Mini. I'll probably get it made locally rather than buy one. I know that for the chain tension to be steady and not jump off while using a swingarm, it's best to use a jack shaft close to swingarm and inline with the angle of the rear...
  14. ironbutt

    Street Legal Mini-Bikes?

    So...in order to ride between a home or campsite and a prime trail area, sometimes you want to ride on the street for a bit. ;) Is it practical to attempt to take a normal mini-bike like a Motovox or Coleman Trail and register it as a street legal vehicle? I'm in Washington state and they can...
  15. ironbutt

    Clutch or Torque Converter?

    Okay, I've got a 79cc Motovox MBX10 that I picked up at Sears for $199. Just picked up the 212cc Predator from Harbor Freight to upgrade the motor. Now, the big question is: Buy a clutch for it or go all in on a torque converter? I'm not really a gear head and not looking to drag race or do...
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