Governor help

[jjdagoat8045]

Hi I recently put a stage 1 performance kit on my Coleman B200R and am planning to remove the governor I have 22 lb. valve springs and am going to get a cast aluminum flywheel and billet connecting rod just wondering if I have to get a new cam since the old one is plastic I want to spend as little I can on this build.

 

[cl350rr]

Just my opinion but "removing the governor" and "spend as little as I can on this build" should not be in the same paragraph or project.

It costs money to go fast, more to go fast safely

 

[sparkwizard]

You do not need a new cam. I would get the billet rod before you even open the case. Head gasket and side cover gasket, also. What carb do you plan to install? because running a stock carb is really tricky without a governor. I prefer to tweak and tune the original stuff. Much cheaper, more reliable and I don't have to keep fooling with it. I pull the rope and go. You can go down that rabbit hole, but it can get expensive.

 

[sparkwizard]

Does that bike have a torque converter on it? If not, may I suggest, and strongly recommend that you look into installing one before you start learning the hard truth about engine modifications? You might be very happy with your performance for less than a hundred of your hard earned dollars.

Sorry if I sound like your Grandpa. Been there, done that too many times.

 

[Havasu Dave]

Hi I recently put a stage 1 performance kit on my Coleman B200R and am planning to remove the governor I have 22 lb. valve springs and am going to get a cast aluminum flywheel and billet connecting rod just wondering if I have to get a new cam since the old one is plastic I want to spend as little I can on this build.

Of course you should upgrade the cam. You're getting the springs, you're getting the flywheel and rod, and you're already going to be inside the engine. Why wouldn't you get a cam? If you don't want to spend money, leave it stock, keep the governor, remove the air filter and stock muffler, and install a jet kit with throttle mounting kit, and you have a nice, cheap, reliable engine.

 

[DaddyJohn]

Does that bike have a torque converter on it? If not, may I suggest, and strongly recommend that you look into installing one before you start learning the hard truth about engine modifications? You might be very happy with your performance for less than a hundred of your hard earned dollars.

This! Since the BT200R comes with a clutch and jackshaft, a torque converter, which costs much less than the sum of other parts necessary to remove the governor, will get you much further ahead of the game. You might find that you’re perfectly happy with the performance with the improvement to top speed and rideability that the TC provides. Plus, you did say you’re trying to keep costs down.

 

[jjdagoat8045]

This! Since the BT200R comes with a clutch and jackshaft, a torque converter, which costs much less than the sum of other parts necessary to remove the governor, will get you much further ahead of the game. You might find that you’re perfectly happy with the performance with the improvement to top speed and rideability that the TC provides. Plus, you did say you’re trying to keep costs down.

I already have put a torque converter in.

 

[jjdagoat8045]

You do not need a new cam. I would get the billet rod before you even open the case. Head gasket and side cover gasket, also. What carb do you plan to install? because running a stock carb is really tricky without a governor. I prefer to tweak and tune the original stuff. Much cheaper, more reliable and I don't have to keep fooling with it. I pull the rope and go. You can go down that rabbit hole, but it can get expensive.

I have a stage 1 performance kit in with a header pipe new carb with upgraded jets and air filter

 

[jjdagoat8045]

Does that bike have a torque converter on it? If not, may I suggest, and strongly recommend that you look into installing one before you start learning the hard truth about engine modifications? You might be very happy with your performance for less than a hundred of your hard earned dollars.

Sorry if I sound like your Grandpa. Been there, done that too many times.

Yes I have put one in and a stage 1 performance kit.

 

[Davis]

Hell ya get a cam if you’re going that deep.

 

[creia]

If you are opening up the engine and going to do all those performance upgrades ($$$), yes, by all means upgrade the cam as well. "Go big or go home."
Michael

 

[massacre]

I put a chikuni slide carb on engines with governor removed. The rideability is improved tenfold imho.
lawn mower carbs are mostly "on" or "off". Slide carb has great part throttle response. YMMV.
EDIT:
i only remove the governor on engines that have a billet rod and flywheel installed, for safety.

 

[Mark Brooks]

Gonna hunt bear... Hunt grizzly! No brainer w all the other $$$ mods why would you not put a cam in it?

Jus'sayin...

 

[JimN]

And buy an extension ladder for the hole you just jumped into.

 

[sparkwizard]

Ride it, my friend. Save your money for a dirt bike, motorcycle and a helmet. They go plenty fast with no fooling around.

 

[Davis]

Ride it, my friend. Save your money for a dirt bike, motorcycle and a helmet. They go plenty fast with no fooling around.

This is more of a challenge to most than anything. Who cares about safety first when you build a mini bike that does 60 plus mph? That is all part of the fun. How did anyone survive the 70s and 80s?

 

[sparkwizard]

You are right, of course. I have always worried about advising others to do what I (most of us) did and survived.

 

[DaddyJohn]

Ride it, my friend. Save your money for a dirt bike, motorcycle and a helmet. They go plenty fast with no fooling around.

Being a motorcycle guy also, I totally agree. There comes a threshold in upgrading a minibike, both in terms of performance and cost, that you start encroaching on trail bike (dirt bike) territory.

Most people, provided they have the means, would choose a trail bike over a mini bike because they have good suspension, geared transmissions, better ergonomics, and overall greater capabilities. One thing that makes minibikes an attractive option is a lower entry cost, but it’s definitely easy to outspend buying a trail bike chasing performance upgrades that aren’t likely to get you on par with one. Plus you can certainly increase power and speed to a point, being the mini bike was never designed for it, that it overwhelms the chassis and brakes.

That said, mini bikes do have their charms. Low cost of entry (if you buy used) is one. However, regardless of price, they provide mechanical simplicity, easily available parts, compact size for small-format machines, a simple basis to modify and tinker on, etc.

I like them both, but then again, I don’t spend much time or money trying to boost performance on my mini bike engines. I reckon putting a 212cc on a small format machine is bad enough, lol…

 

[sparkwizard]

Growing up working on a farm, we were taught to always protect the machine, (tractor) keep it functioning as designed for safety and reliability (decades) and always remember, you are all alone out there in that field with a machine that can seriously injure or kill you. Removing safety guards or trying to carry a passenger usually resulted in a whooping.
I think I look at mini bikes about the same way.

 

[panchothedog]

This is more of a challenge to most than anything. Who cares about safety first when you build a mini bike that does 60 plus mph? That is all part of the fun. How did anyone survive the 70s and 80s?

Probably the same way we survived the 60's. Couldn't agree more with DJ's
Post # 18. Rode street bikes in the early to mid 60's ( looking back, traffic was a lot safer then ). My kids raced moto cross in the 80's so I bought a YZ 250 so I could keep an eye on them when we went to the desert. Too old for a dirt bike, and I wouldn't ride on the street today for love or money. But still I really get a lot of enjoyment from my mini bike. And yes, I've spent ( maybe wasted)
a few hundred dollars on the usual hop up parts. I think once performance type machinery ( anything, cars, boats, bikes ) gets into your blood, it's very hard to ignore it and leave things alone.