Predator 212 5000 RPM Governor Mod (Not Removal)
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- Опубліковано 29 гру 2016
- In this video we talk about common predator mods and how to achieve 5000 RPM without removing your governor or disabling it in any way.
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** Note ***
It is possible that you will need to back out the throttle stop screw. This is the machine screw that captures a silver spring on the throttle arm assembly. You can back it out a little at a time or completely remove it.
Huh! I just learned something new. You're right, there is tons on governor removal, but this is the only video or article that goes into adjusting the governor without removing it. Thanks :)
Earthy0 no problem
You just saved me $200, and my electric start. Thank you so much for this video. I am still a little concerned about the stock flywheel with 5000 rpm, but if you say it works, then it works.
Get a billet flywheel, I blew mine up and it blew a hole in the engine..
I would say static adjustment for the governor arm should have been mentioned. Most people know about the throttle stop screw that needs to be removed, but i had to losen the static adjustment very slightly to get a full close, and full open with this given adjustment that probably increaced my rpm from 4000 to 5000.
Lol I've just ripped out the governor and rev it as high as it will go. Been like that for years on my mini bike and still hasn't blown. Sure throws fireballs out the exaust when I let off at max rpm tho
This video helped so much. I definitely could not have done it the other way. I'm gonna try this as soon as possible. Thank you!
David Horn No problem. If you check out my other videos i have a tutorial on how to remove the governor completely as well and how to set up the linkage afterwards.
you would need a 8mm,10mm, pliers, hammer, screw driver, and a grinder or file and you can do it as well.
FWIW the little round nipple on the choke lever is for plugging the fuel line. Fits perfect. Good video, thanks.
Hey thanks for the tip. I will be uploading a video tomorrow night doing a condensed tutorial on this with a tach to verify RPM's. I'll also be doing a 25 hour 4800 RPM torture test on a stock hemi governor adjusted to prove reliability as well.
How did you add a second wire to your tachometer in your other video? I think I have the same one from amazon and it only has one wire and that wire is stranded not holding two inside the sheathing. Thanks
I just bought a brand new hemi 212 predator and the springs are already in these exact locations,
Thanks for the help on the plug.. Would you know how I can get the emolshone tube out. I removed the jet but the tube appears stuck up in the carb. Thanks for the help...
So I want to do this mod but I worried I could blow my block, how long have you ran it like this with no problems? I have added a header to my engine and thinking about geting the jets and filter from go power sports to add to it, what are your thoughts?
one of the simpler mods very helpful.
Good video, i will do this after i just get it running thanks, im trying to get an old school mini bike going, i went with Northern Tool brand 208cc motor called the ironnton, have not found any videos or info on these motors. Main reason i went with it was the rearward pull of the pull string , apposed to predator forward pull. Problem i'm having is these newer motors are much wider than the old motors, clutch and rear sprocket dont quite line up, i have more room on shaft to move inward, do youall know of any parts suppliers with deeper offset clutch sprocket, and a rear wheel with longer axle shaft, or is it ok to use 3 - 3.5 inch spacer. thanks for any help, i'll be 60 this summer and have been out of the mini bike world for about 47 yrs! Its so dang cool to see and learn so much from you tube, WE ARE REALLY LIVING IN A GREAT TIME.
CC im not sure who would carry those honestly. best bet is probably reposition the engine in the frame so it all ligns up if its not to much of a shift one way or the other.
Just checked my motor to do this as well and the springs are already set that way from the factory , I will adjust that throttle set screw tho
Could you put up a video of what spring you need to use on it if it only reaches 2800 rpm still?
Do you get your parts from Gopowersports?
right on 🖒 thanks for this.
I did adjust motor as much as posable, even went with stainless steel smaller diameter bolts, i'm about 1/4" off or less, have you heard anything good or bad about ironton motor, and as far as 3.5 inch wheel spacer, is that ok to run. thanks again
CC 3 1/2 spacer seems like quite a bit to me hobestly.....would have to see it.
you might need to reposition the motor plate to get your alignment.
I think the ironton are the same engine as the predator basically....just costs more. Ive never had one on a kart but i have one on a northern tool pressure washer and its been a good engine
That's odd. My springs are setup exactly like this on a clone that came with the Coleman mini bike I just bought. I haven't ran the engine yet. The bike got all scratched up in shipping and I have everything apart to be painted when winter is over. For the "stock" racing class you speak of, are you allowed to remove the muffler and open up (grind out) the material at the flange to create a better transition of flow? Those mufflers are already very restrictive. Point is to do what you can to improve the stock setup with little or no money. It may help only a fraction, but doesn't every little bit help?
Deucealive75 the stock class doesnt allow for any modificaion to the exhaust or head at all. some places allow you to remove the governor completely and run a pipe, just not in my area.
Hey back in the day of flat head B&S engines, that's all we had to do is move the springs, or bend the fan blade that was acted upon by the flywheel fam that cooled the engines! I got 30 mph out of my little Fox mini bike with a 3.4 B&S engine! Wow I only wish I had one if these engines! Back then the best engine to start with was a 6 hp B&S engine! That was available new for around $150! But that was a lot of money in 1968! But my buddy and I installed one in his Sears mini bike that came with a 4 hp Techumsa and a small tq converter with a jack shaft the world leave a small 4' patch of rubber on concrete! But we added that 6 hp Briggs with a tweaked governor and got just about 50 mph! Plus s 10' patch on concrete! That little bike could run with Yamaha Mini Enduros till the Yamaha hit top gear! Plus it could climb hills like mad! We then had to put bigger tires and wheels on, with a front fork that came off a Yamaha! I wish I had a photo of that little beast! It was king of the minus back in the day! I ended up buying a new Hodaka Ace 100, just so I could run with him! But them he ended up buying a 125 Penton ISDT and we both grew up!
sick intro
can this be done on a 79cc engine ???
what plugs do you use
I went and looked at mine. It was hooked up the same way I guess I did it by accident when messing with the linkage. Need to get a tach for my mini bike now. What are your thoughts doing this to the linkage and a zip tie on the spring??
Casey Hafley do you mean putting a zip tie through the spring to limit the travel
the governors lever is actually killing air flow to the carb when lever pulls the black piece on the carb?
the governor manipulates the throttle arm yes which does close down the throttle blade killing air flow and fueling yes.
if you exceed the factory set governed rpm without removing the governor wheel then the governor wheel can shatter, causing terrible engine damage. It's just a risk you have to take. Just wanted to throw that out there.
can you tell me what is the best spark plug to run? I will be running a stock predator class at my local kart track
Robert Fearing ar3310x is the plug ifni remember correctly. Pretty much what everyone runs
Can you do this with a predator 301
I haven't removed gov but I have throttle plate and just removed that gov rod on a 420 cc so should I put it back and spring to get higher rpm
Chris Haskell yes or tie the governor arm that comes out the top.of the crank case so it cant rotate and contact the crank internally.
Kart thanks
Just bought a brand new predator and mine is already setup this way. I went back to HF and the display model is the same as well.
Yeah i cant recall the exact spring locations. I hadnt set one up in a long time. Really just need to dial out the limiter screw and play with spring positions until you get around 5k rpm.
Cool. I'll do some testing and let you know what i find.
Sounds good. If all esle fails remove the governor. We werent allowed to remove or modify it and couldnt rev higher than 5500 rpm so that always worked for me.
Just rebuilt my minibike (did a little mini video series) i'll have to see if my 6.5hp Powerfist motor has this
+Kart I have stock valve springs on my predator 212 and have unhooked and secured the governor from moving but I am still only seeing 3600rpm, +/- a few hundred. do you think my stock springs are floating early? Idk what else it could be. it's like the governor is still intact.
the predator 212 is on my vintage mini bike. both jets have been re-jetted, custom throttle linkage, no air filter, e3 spark plug, 1/2" to 3/4" to 1" custom header 8" length. I have not advanced the timing or swapped out oem valve springs, and have not replaced the stock e tube.
finally, I am running a TAV20, do you think that could be limiting my rpm's?
I would appreciate any input you can offer
edit: I just read some more comments, one mentioning the throttle. I have verified that my custom throttle linkage is swinging the carb to WOT
Wesley Jackson thats pretty weird indeed. you should see atleast 5000 rpm at minimum.
does it hold a steady 3600 rpm or does it kind of surge and buck a little at the top end of the rpm?
no surge, just tops out at 3498rpm, so apparently I'm not even seeing full stock rpm
If your TAV has an overdrive function you just might be running out of engine at that RPM at top speed. The engine simply does not have enough power to spin any faster with the given load and final drive ratio. What's your max RPM with the back wheel off the ground with no load? If it is 5000+ off the ground then you have a gearing issue. If it is still only 3498 then look at your engine.
Deucealive75 interesting thoughts, along the same lines as my thinking. I will check with the rear tire off the ground. thanks for the input
The predators are coming setup like this out of the factory though. I guess I'm a little confused. I went to go try this out on my mini bike and this is already where the springs are at, then checked two of my buddies mini bikes and this was where their springs were at. None of us have touched those linkages at all. I guess I'll play around with moving them into other positions and see what happens.
what happens when you just unhook the spring for the governor
Alcus hudson bad things if the governor is left in engine and arm isnt retained by something. if its just left with nothing it can swing over and the crank weight will hit it and probably break the crank
So the closer to the pivot the spring is, the higher the revvs?
Will I was shown this by another racer and just have used those locations since I know they work for what I need them to do.
If I get my mychron tach back on the kart I will move the spring around and see what different RPM readings I get for each location.
If you emulate my setup you should get around 5000 rpm.
We try to run the predators at 4800 rpm because that's where they make peak hp. They really fall off the power bad after that without mods.
+Kart do you think 18lbs valve springs would be enough to keep the power up after 5000?
Will Trautman yes they should get you about 6700 rpm
Will Trauan, I did this mod on my predator and put in 10.8 springs and it revs like a champ. I've got mine turning about 6k and it would go more, but I'm afraid the rod won't take it. I consider it a time bomb as is.
I done this on 196 coleman mini bike, did not work move the large spring around nothing!
kenny loveday thats a different engine. the governor could work differently or also have something else limiting the throttle. Hard to say without seeing it in person.
hey kevin, my friend tried the same thing... its not a different governer but on the coleman minibikes its not the governer... the stock hand throttle is limited so what you need to do is play with it, maybe take it apart and then you will get full throttle response! it hasnothing to do with the governer if you havent already messed with the throttle
You need to make sure that there is no return spring bind where the throttle cable connects. One Coleman owner here on you tube noticed this after he backed out the throttle limiter screw. He corrected it by cutting off about 4 coils from the throttle return spring. This shortens the spring to eliminate the bind. The Hisun engine on the Coleman has the same throttle assembly arrangement that all these clones have had for years.
Yes do you recommend doing it. Do you gain rpm.
Casey Hafley Before i did anything with the linkage and zip ties honestly i would pull the governor out.
Kart I'm getting ready to install a Mikuni VM on my Predator and this has me wondering: How can i govern the Mikuni?
Brian Evans i dont know of a good way to govern the mikuni.
Yeah I thought so. The only way possible i can see is to lace the Mikuni into the existing throttle work thereby ruining one of the key factors in running them in the first place :P
i have the same motor it comes on but when ever i give it gas it will not move and it cutts off
Shanesha Grayson sounds like something is binding up. try removing the chain and see how it acts. see if the kart moves freely etc
low oil sensor? cut the yellow wire on karts.
Shanesha Grayson clean the carb
Get new jets
can you make a video on how to tune a carb... im new to go karts im a dirtbike rider
there is not much to tuning carbs on go karts.. only jetting tbh
Grindin' Gears. can you please tell me how to connect the throttle to were it will return after i take the gov. off
all I did was remove the governor arm. ran a rod from the carburetor to the throttle.. new fuel tube.. new pipe and absolutely no air filter pure air flow 40 + running strong now for months
You won't hit 5000 rpm only with this "mod." On your other video, you have an upgraded exhaust, air filter, and possibly other "NR Racing" mods and you still didn't hit 5000 when you hooked it up to a tachometer. How can you claim 5000 on a bone stock motor just by moving a spring?
Manikapiptili Sanchez a stock predator with no governor will run 5500 to 6k rpm with no mods except governor removal. so yes you can modify the governor on a stock engine to reach 5k rpm or thereabouts.
If you do no other mods to a motor other than removing the governor, you're setting yourself up for either a serious injury, or death. A stock flywheel cannot handle running without a governor. Your other video shows you hitting under 5,000 rpm with upgrades. Why not do a video of a stock motor, with this "mod" hooked up to a tachometer? You will be further from 5,000 than your motor with an upgraded air intake and exhaust. I promise.
mods that increase hp have nothing to do with rpm, the only thing limiting the rpm is the connecting rod
Manikapiptili Sanchez
I just got a 4000 rpm spring kit for my Briggs, it's a factory part number too.
When first setting it up I was shooting for around 4200.
It went 4600 and I lifted off and readjusted.
I was able to settle around 4300.
Uhhh so this is for go carts?! 😂 I stuck mine on a minibike
Blown engines sells more engines! lol
Doesn't work
wish i could of seen this before i took mine off
does not work
WolfecraftWM sorry it didnt work for you. possibly you missed something? lots of guys getting it to work for them. look up nates chop shop hes done it to several engines with success. just trying to help. - kart
thanks
Kart will it work on a predator 420cc?
anything worth doing is worth doing right,,, Just remove the governor, its not hard,,,
all predators come like this, it's not a mod
Emmanuel Ruiz then why does a stock predator only turn 3k and mine 5k? lol
I have no idea lol, i bought a new 212 and it had the same spring placement
Emmanuel Ruiz well you might be clrrect there somewhat. Ive found you need to back out the limiter screw mentioned and play with the spring placement to get the 5k rpm. Its like a dance between the two lol
yeah i did the same thing, thanks for the video though
Emmanuel Ruiz no problem
dam shame you have to leave the engines stock in your races.....
poooop