Go Kart 420cc Predator Governor Removal & Performance Mods
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- čas přidán 12. 03. 2017
- Today I finally get the 420cc up on the work bench and make it perform a little better. I removed the governor, jetted the carb, air filter and exhaust. I think this engine will perform really nice. Don't forget to like, comment, subscribe and share these videos.
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Im building a 301cc for the first time and THIS is one of the only and most helpful videos ive found.your channel has help guide me threw any hiccups so thank you👍🏾
I cant believe how much of a difference there is power wise between the 420 and the 212.. love this block.
hey red beard. great looking engine. Learned a lot just watching the video. really can't wait to see it run. Man that is going to be awesome.
I love the grease and tap trick. I will remember that trick. ty. cool mods. cheers 👍😎
Well, I just picked up my own engine, and enjoyed having "foresight" in removing those items, and cleaning things up. Thanks much, I chose this engine because of you and several other people who have enjoyed putting them into shape. I look forward to "test driving" mine. I'm impressed with the cleanliness, good design, and quality you show is in these engines. Thanks again.
Why did you use quotation marks when stating "foresight" and "test drive"? Im just curious and mean no disrespect.
@@jeremyshea8055 I'd been looking for a carb for a chipper/shredder, two years, and bought the engine, then found a "Chinese carb", got my shredder running, and now am looking at that engine for a "walk behind tractor", and knowing the options from someone else's experience is a great boon. I live on sixty acres, and am planning on planting some five to ten acres next year. This and other videos has opened my options, and made getting going much easier, cost effective. I've found the Chinese have essentially produced parts for everything we've got that breaks, and they work, my government may hate them, but I've always respected their culture, history, and am enjoying their trade benefits.
This channel is awesome! I'm planning a swap on an Arrow 200 and this is a huge help!
That gas tank is slick..I will be contacting him to get one made for my racing mower build! Thanks for the great videos, really does help out for people that are mechanically inclined but have never worked on these small engines.. I've learned a lot from this channel for sure!
Well thanks for the support
Can someone PLEASE tell me how to get in touch with the guy who makes those gas tanks ? I have a totally restored Yerf Dog two seater with a new 420 Predator engine and I want to switch out my gas tank for for like this one. Please help. Thanks !!
Thank You RBG for sharing this video about the 420cc predator engine. And, how too modify it. You gave me some ideas about my future 420cc build; especially the air filter! I should've thought about how to do that!? LOL! Have A Great Weekend!
I like the fact that you go into pretty good detail in what you're doing, helpful when someone like me who's still just starting to build and upgrade engines and go karts. Have a buggy i just picked up and putting a 420 on it so Thanks even if this video is 3yrs old.
Same here! Just getting into building off road karts and his channel is the best I've found
harbor freight is having a parking lot sale soon.. i might have to go grab one of these for the mini bike!
great video man ,just got a 420 for my off road kart build. even being a stock moter it has alot of power. I can't wait to see it with mods you put on it .
+Charlie Whiteman hopefully the video will be out Wednesday
After watching a few of your videos, listening to you talk and seeing your tools, I think Harbor Freight should be a sponsor of you and the channel. You make their tools look good. I have several sets of those screwdrivers ($7.99 on sale) as well as those long pliers. Love Harbor Freight, one of the good things to come out of California. Thanks for the videos.
Great presentation, Thank you from all of us.
Diggin that RBG KARTS sticker on that engine!
just have to say I really like how you make your videos. I found you through cars and cameras and you really put the for thought into the videos. keep it up and great job man.
+James Cotton thanks man. What did you mean by you found me through cars and cameras? Just curious
I started watching cars and cameras on CZcams and it suggested your channel and I have to say that you build much better
I try to do the best videos I can for your viewing pleasure
@@RedBeardsGarage Overlook too much good mechanical stuff for beginners on the other site.You mostly nail it.Trev New Zealand
Thanks for your videos. It has made finding parts and installing them really easy. Could you tell me which size and thread bolts & orings that were used in the oil sensor and governor shaft holes?
Fantastic build, thanks for sharing!
Really Good video. Prompted me to get in touch with Brad Hill and get one of his beautiful gas diamond plate tanks for my kart. Coming this week. got my brand new (still in the box) predator 420, header, air filter and new 40 series torque converter. Can't wait for this weekend to get to work. One thing on your video made me a little nervous. Not to be too picky but when removing small parts, (nuts and clamps) with your muffler off, you should stick a rag or something in the manifold opening. Having something fall in that hole is a big OOPS, and something your viewers should be warned of. Great videos coming out of Red Beards Garage. Keep it up pal. Thanks.
He does awesome work and is an awesome guy as well. Thanks for supporting the channel.
You should add in your description that you bent the valve rod/s. I’m so glad I stumbled upon your 2 yr later updated video. I’m fortunate you made one. Ty! Great detail in your vids otherwise.
Thank you! I picked up a run down go kart for my kids that has a 270. Its beat to hell and i wasnt sure what to do. Your video helped a LOT. Lots of info i didn't know.
There is also a video on the channel about how to rebuild a gx270
Red Beard's Garage i ment to comment on that video. Think video ended and went to this one without me noticing.
Awesome build! The gas tank is a work of art that makes the engine. I would leave the low oil sensor alone. It would be sad to lose the engine because of low oil even though one should constantly keep checking the level.
I have never heard of anyone loosing the engine because of the oil sensor removal. You have to remove it on go karts. When you take curves hard or on a off road go kart it will kill the engine. That is the first thing I do when I get these engines
Well, that makes sense for that application.
Without replacing the stock valve springs and doing this upgrade how many more rpm's can you get with out throwing a rod or damaging the engine ?
I watched a similar modification but he put in heavier valve springs to prevent valve float with the higher rpm. What max rpm will this safely run?
RBG can I flip my 420cc powermore vertical to a horizontal without any problem or do I still need to modify the oils splash stick
I need your help.i,m trying to decide which engine to buy and what i need to take governor out and up grade springs .could you please tell me if the hemi and none hemi predator 420 heads have the same valve springs and how do you determine what lb of upgraded spring to use ? and where to buy them from.thank u.
Ive got that same flathead with the red handle, the grip slips real bad when you try to tighten something, sets everything to about 15ftlb
hey red beard how did you adapt the exhaust header to the muffler? the muffler is much larger than the header
If you disconnect the govener arm from the top of the engine do you have to remove the wheel and j shaft inside the engine?
What's the oil capacity to these motors? I have a 270 I'm building up at the moment
I didn't see you do springs. Do you recommend it being done after removing the governor
I have 11hp greyhound electric start and im wondering since its a lifman motor what motor do i reference it to for parts?
On the 420 predator that I just bought the throttle butterfly seems to operate in the opposite direction. In other words pulling the throttle rod opens the butterfly instead of closing it as yours seems to do. Spring loading it as shown causes it to return to full throttle instead of idle with the rod bent and connected as shown. Am I missing something or is my engine just different? Any ideas.
How do you put the counter shaft back in? Is there a dot on it to?
what cam is better for 420cc 308 grind weld or 356 grind weld or can you explain what one does & the other doesnt
Great tips and awesome video that engine would sweet on my Carl Heald trike
great detail! thanks
Awesome! Big improvements!
how tall is the engine when striped down ? I have 13" between top and bottom frame rail .
Question! I am doing a Lifan 13 hp, 389 governor removal, do you know if it's basically the same as the Predator 420? Thanks!
Should be the exact same process
I just let the gas drain off and evaporate because is really good for the atmosphere lmao!!! I'm dying brother
Hey should I get heavier valve springs my 420 seems to be floating valves at high rpms and if so what size
Awesome build.
Question what lb are the stock springs and do you recommend 50lb when taking the governor off?
Do 420cc vertical shaft engines need to be modified for horizontal use in a go kart mine says its got an oil pump on it
I have a question about the governor removal I'm building a cart and I'm using a Honda 390 and I've never removed one but I e had a couple spin out on riding mowers so what keeps the engine from racing out of control
I see you didnt put an aluminum flywheel on after you removed the governor. Will that be an issue? I want to install a stage 1 kit and remove the governor on my new predator 420 mud motor but wont if i have to buy the expensive billet flywheel. Do you run them?
Hi Red I’ve been following you and learning stuff from you for a minute now. This the same engine I’m working on to modify and put in my Kawasaki 550 mule. Maybe I missed you explaining the purpose of removing the governor from the motor. Why? I’ll hi back later and watch this video again for that info. But I just enjoy watching these videos a lot when you’re one on one teaching love your knowledge about motors and creativity dammit I do thanks brother I would love if I can get reply to ask you more about my mule. Thanks buddy
Hey red beard where can I get the red hoses for my predator 212 and what sizes should I get for the fuel line and the valve cover vent ?
Im pretty sure amazon or ebay will have it and i think the fuel line size is 3/16
So if you disconnect the leaver on the goviner with the spring hook to it is it still nessery to split the case just to remove the gear that no longer works any way
+Allen Lackey I would definitely open it up and remove everything. It's not necessary but I have had a subscriber mess his engine up by leaving it in.
is there an aftermarket cam for these like the 600 series?
do i HAVE to take out the low oil sensor for the governor removal or can i leave it in?
Do these motors have to use gravity fed tanks or can you use an outboard boat motor tank instead?
Hello, odd question, what’s the height of your work bench and are you sitting or standing? I’m getting ready to do my work bench shortly and having an internal debate on height.
I have a 420cc predator on my mud motor kit for my boat.. worried about taking the governor out that it might wreck the engine.. what is your thoughts red beard
I have a mud motor with a predator on my boat.. the header pipe has to go out the back and not to the side. My question is will it run ok with a straight pipe going out of the back? I've seen pipes that curl then go straight back but they're expensive
If you remove the governor gear, and for some reason, the crank moves and you haven't marked the governor gear before removal, how do you set it back in the proper alignment so the engine is not off balance?
What exactly does the oil catch can do and how is it ran?
Good work I like your knowledge 100%
Cool tank!! Motor looks good with it. Here is a tip you might not know. The valve cover is silver zink plated. Pull it off and buff the zink on it. The outcome will look like chrome and will match the shine on the tank Harbor Freight sells those buff kits with the the compound, you want to use the red rouge one.
On the 420 is it not necessary to replace the flywheel like on the 212?
Stupid question, but, do you have to remove the governor to disable it? Like, if I just removed those linkages and rebooked up my throttle like you did at the end, would that work?
How’s it sound with that style muffler,,, what torque converter would you suggest?
Would disconnecting the governor arm from the throttle achieve the same result without getting into the crankcase and removing the governor gear and arm?
What’s the red (looks like another air filter) hanging by the carb?
Excellent video. Thank you.
Would you what is the distance from block to center of belt on a 780 drive clutch? Still waiting for mine just wanna do mock up for block space check
Hi I just purchased a duromax 420cc 16hp and I was needing to find out what size of clutch to buy or where I can find one
How come when I set my throttle linkage up like that it’s backwards. When the spring returns it with that set up it will set it wide open
Do you have to take the govner off in the inside or the motor
what is the aftermarket support on this motor like? is this a Gx390 clone or similar?
I was thinking for a second like " why would you build a motor this big and put on a children"s cart" Lol Love your videos
whats the limit on rpm's the 420cc pred motor?have a deuce with one in it...how high is my redline if governor romoved?dont wanna blow up my motor
What jet did you use? Non of your links go anywhere anymore?
Hi does it run better with or without the balancer?
So I have a question do I need to put 50 ilb springs in if I take the governor
im looking to get more bottom end out of my gx390 any tips on where to start without breaking the bank
Another excellent video. You produce fine videos and they're spot on in the steps of converting small engines to mini-monsters . I'm glad I found your channel to guide others to for help. Any help I can be, just let me know.
50 years of experience in machinery mechanical & metal fabrication behind me, that I need to pass on. Thumbs up .
Thank you brother. Thank you for supporting the channel.
Where are you located?
Where are you (Okie Chopper) located?
@@temekacunningham6965 Oklahoma City
If I want to remove the governor on a 301 predator is it more similar to the 420 or a 212
Great looking engine!
Thanks man
Hey there Red Beard! I have a question for you on this procedure. First, thanks SO MUCH for all of the excellently detailed vids, buddy. I'm building a man-sized kart right now using a Predator 420, so I used your video to learn how to remove the governor and low-oil sensor. Super easy thanks to you. However, I accidentally knocked the ballancing shaft out and although I know you mentioned that it can simply be removed, I also am curious to see the difference with it in, then taking it out later when I get around to purchasing a stage 2 kit. SO, my question is: do you know if there is any specific "timing" position for this shaft so that it ballances the motor properly or does it not matter? I don't see any markings to line up, but thought it was worth asking on the slim chance you were able to read this and get back to me in short time. Is there any benefit to just removing it now? Your expertise is much appreciated! Totally understand if you don't have a chance to respond quickly - it's a shot in the dark reachin' out. Keep up the awesome work and vids!
What number jet do you use when doing just the intake and exhaust upgrade
Building my 420 this weekend. I’ve removed the governor, oil sensor, balance shaft, tapped the holes and added a crank vent. Is it necessary to replace the stock flywheel? I’ve read that it is required. If so, where can I find one that will accept the electric started?
Thanks
Josh
I am having trouble with the governor. When i pull the gas it moves the butterfly barley on the carb sometimes it opens up all the way and it doesn't return back. What can i do.
I like the toolbox in the background that says stuff at 2:47 😂😂 that's so like me
Thx for the great video.
Do you have a video for an oil drain pipe setup?
would all of these mods be similar to modding a duromax 420cc?
I've got a spare gx390 . I just can't find a decent priced frame anywhere. Learned a lot from you about kart engines in a few hours of watching.
Thanks for watching man. Try the app let go and try also spelling Kart as Cart
I am building a mud motor for my duck boat using this same motor...what would you estimate the HP is now after you modded the engine as is in the video?
With the ported heads 45
I'm needing a governor assy for the 420 for my shredder. It didn't come with one and I don't have a clue how anyone expected it to work without a governor. Do you still have the parts?
Thats awesome job thanks!!!
Question. I got that muffler and a 420 header pipe, but how did you attach the muffler to the header pipe?
How wide is the 420cc with the gas tank off? Just wondering if I could slip it between the 11" bars of my engine cage.
With a cvt its 19" wide at the widest point
Subscribed... I'm looking at mods for my 420cc predator. I built the longtail on my duck boat and plan on picking up it's performance.
Red, awesome video following you step by step. Question, the balancing gear you talk about at 10:30 fell out. Made it easier to get oil sensor out :) For less vibration on my golf cart install im guessing, I should leave it in. How do I line it back up? mine is a little different shape than yours. Thanks again for great video.
There is a dot on the crank and the balance shaft just like the cam. line them up and slide it in. Probably would leave it in for your build
If I bought a header and a air filter for my 18hp duromax do I have to buy bigger jets for the carb to?
Yes sir
Did you say what size tap you use? If so I must have missed it unless you use the 3/8th tap for both? Thanks for the info.
Great detail and clear video. Keep up the good work. BTW - have you upgraded the cam and flywheel yet? There aren't many videos on do's and don't for the 420cc yet. I see a lot for the 212cc. Do you have any suggestions
I will be doing a few more videos on this engine in about a week so stay tuned. You don't need the billet flywheel when running a torque converter.
I don't have a converter. This is on a mud motor boat surface drive.
how much does the balance shaft weigh ?
What clutch should I use I have a 420 in the box ready to put in my sons go kart
Do you have to remove the governor arm when removing governor gear?
Yes you need to remove it so you wont damage your engine