TE/TC My One Fiddy

John, where the heck are you finding all this new stuff?
Every time I look, you have found some new angle!
Your never going to want to ride your bike, it will be worth more than some folks houses! HaHa!
I'm genuinely interested in the new tech you keep digging up!

These 150’s will most likely be the last bikes we’re buying.
They’re so nice to begin with from the factory and really don’t need any improvements.
I guess some people just can’t leave well enough alone, but I’m having fun trying to get everything out of them.

And being old and slow about the only thing I got left going for me is to pretend like I’m an engine tuner and mechanic.

:-)

I’ve been sick with the flu the past three weeks, not much going on.
So decided to take a look at the piston after about a 10 mile break-in.
Things look good so far.

10 miles? Did it even get warm? I'll let is slide due to Dirt Bike Withdrawal Syndrome.

Now that you took it apart to look at it you're going to have to break it in again when you bolt it back together. lol

John have you look into seeing if you can use a bolt setup instead of a circle clip on the counter shaft sprocket? The new 250-300 now have that.

Hi Koot,

I was not aware the bigger bikes used a different setup, personally I’ve never had an issue with the circlip setup.

After you get a lot of miles on the bike (mine has over 1300 now.) The splines get some wear to them. It seems like the bolt on style last longer.

Time to try my other combustion chamber head design.






The first design is still looking good, after removing all I did was sprayed it down with some carb cleaner and wiped clean with paper towel.






Installing this second design insert and will try it out for the weekend.

Very nice, how are you evaluating the various insert performance differences?

Well, based on experienced guesswork and seat of the pants I’ll have to say this is working better.
I rode around the back of the horse pasture today, a small track with some logs. Acceleration out of corners was strong, and carburetion was good.
I’ll have a better guesstimate after trail riding this weekend. Also, I’m waiting back to hear about sending these out to get dyno checked.

I trail rode the bike yesterday with the other head design and noticed an increase in torque and power output.
If anybody is a machinist and would want the cad files on these head designs shoot me a message. I can email them in their native Mastercam form or simple wireframe in DXF, IGS, or STP format.
Please note that I am using Renegade 110 octane race gas with these heads.