Modified vs. Stock 212cc Head
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- Опубликовано: 30 июл 2017
- Today we're swapping the stock Predator 212cc head out with Ike's highly modified one (ported, polished, and shaved .050 for more compression) as part of our attempt to achieve 60+ miles an hour on a go kart.
Thanks for Watching!
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The following video features activities performed in controlled environments by knowledgeable persons. DO NOT attempt to duplicate, re-create, or perform the same or similar activities at home, as personal injury or property damage may result. CARS AND CAMERAS, the persons shown in this video and ANY CONTRIBUTOR, ARE NOT LIABLE FOR ANY such injury or damage. ALL CARSANDCAMERAS CONTENT IS FOR ENTERTAINMENT PURPOSES ONLY.
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If Engine Masters has taught me anything, it's that ported heads are literal magic.
Do you have MTOD?
Ryan Mcelderry Yes.
Sheehy/ hell ya they are so much more power i did on myself and it worked beautifully
"Why do we keep working at night?"
"Because we had a big pizza earlier. Had to take a nap"
Best quote yet.
Kel DeWeese so is that what they call it now a days lol
I had the same issue you guys had not having the .03 gage. So I googled thickness of a couple of house hold items. A grocery bag is .01 so you can fold it and get the measurement you need. It worked like a charm.
heads don't make much difference until you're in the higher rpm range so the heads can take advantage more air flowing/moving through them
Man you guys always make my Mondays better, you guys rock!!
120 feet aint enough, you are JUST STARTING to get into that upper RPM range that the port and polish work will shine. Do another vid, but go out to 300 feet.
absolutely correct
thats the point
it would be obviously faster if they did it longer
CarsandCameras did you guys fix the crank case ventilation
should also replace the clutch with a race clutch, give it that umf it needs on launch
"Gatta get these studs in." Ike: "Im right here!"
racing clutch time
Stock predator valve adjustment is 0.0039-0.0059 per the owners manual that comes with them. That’s for both IN /EX
......with the 18lbs springs ?
With 26# springs???
excited for tomorrow! i saw no smoke on the teaser run and im pretty sure i heard 65!
Could you guys set it up with a torque converter and a small sprocket? So it would be nice because you would have the gearing to take off with the converter and a high top seed too with the sprocket.
The upgraded head sounds nice, at least! Great video guys :)
Im sure the wet surface did not help. im sure the modded head added power which reduced traction you were already having issues with. Stoked for the 60mph vid tho.
What happened to the turbo drift trike
man it rains there a lot ! great work men !!
use different fuel when you up compression aka cam and shaved head it will ping if not using High enough octane fuel
They use 93 thats well enough
I heard 62!! I hope I get this go kart frame today I'll be coming for you guys
I love yalls videos
We*
I want to see if the mikuni makes a difference on acceleration and top speed
It does
I've heard of a ton of different measurements for value lash but .003 is the one I heard the most
Usually if it’s cold you set it to 2 and 2 with a cam and it’s good
Why don't you put a torque converter on that go-kart?
with a shaved head on that engine does push rod length need to be corrected like you have to do on cars
I think the same as a few others and wonder if a lapped time test would show better results as these give you points of both high and low range. And 2nd well done on breaking 60mph, I won't spoil the best top speed but wow and again WELL DONE
Doesn't it make more sense to adjust the valves when the motor is warm?
Tap and diy set that's what the tools called. Y'all r awesome going to go buy a set asap
Specs on valves is intake .10-.15mm, exhaust .15-.20mm. (0.004"-0.006", 0.006"-0.008")
When will you work on the 66 c10 in the garage again!!??
Yeah ike make a demo derby car like so they can see
wthomasw2. Agreed
Awesome video love the video
Drinking game!!! Take a drink every time u hear them say this!! Loll
It's will be fine
Testing purposes only
Thank you go power sports
Really like your guys channel!! Very helpful!!
You guys didn't lap the valves ?
Yeah right lol
Our Lady of Blessed Acceleration, don't fail me now.
Used to use sand paper on heads bump up compression a bit still sure people do that way as long as its true flat
In the predator owner manual it says the intake valve clearance should be 0.004"-0.006" and the exhaust clearance should be 0.006"-0.008" it is on the first page of the owners manual
FINNALY SOMEONE DID IT!!!!!!!!!!!!!!!!!!!!!!!
Surely you did lap the valves after switching them?
After the new head you can tell that it bogs a lot at the start. Add more fuel at low rpm and it will be much faster.
Did you guys put a cam in it? If so what size? Stock valve size or oversized?
That driveway drag is mostly clutch slip. It sounds stronger though.
Do you guys paint your exhaust ? If so what paint should I use
John "we need to put the studs in"
ike "im right here"
6:14 "sorry you had to see that" *wink*
Did you reseat the valves? Because you should have shown it if you did.
Might need to jet up again, you should rig up a simple stoichiometric gauge (an autometer gauge, an o2 sensor, and a battery) and tune that buggy up. Also tap the tank for an oil cooler / oil pump / oil filter. Sounds like you need a timing advance too. Anyway, from the sounds of the teaser you made your goal anyway....keep a rockin...
You have the right tool for valve adjustment, just add smaller shims together to get your size.
If u bump compression it eats ur get up and go but helps you produce a better power at speed but if u decompress u can run higher rpms and better of the line but have a weaker power band
Hello, if I wanted to tell you a track bike like that, you will settle them with them, except for Jordan. How much does a dollar cost?
comeon guys. its 08:30 in germany. ITS TOMORROW ALREADY!!
"Why do we keep working at night??"
"Because we had a big pizza earlier and had to take a nap..."
LMAO!
Porting and polishing a small amount usually adds up to .7hp but that's free HP you can just shave away so it's definitely worthwhile it in my eyes
where did the head come from?
I shaved my hemi 212cc head 0.60 thousands and lightly ported I picked up lots of low end grunt from the comprrssion alone. Higher compression does get you out of the hole.
Flow before compression. Makes more power every time.
Better hope for the valves to not hit without it clearanced hahah but it'll be fine!!
Am lovin de vidz... Dude ARE U NUTS... drivin a untested engine in a go cart!/ Soap Box Cart!
why test on such a short distance? sounded like it was just barely starting to make power at the 120 foot mark.
Get a higher stall clutch it will skip past some of the low end where it don't have as much power...with the bigger cam you sacrifice some bottom end
Hey guys, i cant find the info anywhere, im ordering a 212 predator and the performance kits stages 1 and 2. I need to know if the engine im ordering is a hemi or standard, any wisdom?
Did I see you swap out valves and not lap them?
The head work shouldn't really make any difference in the low to mid revs. which is all you're getting to in your runs. It will however make a substantial difference in the upper revs.
Hear hear
Ya usually fhe lash on exhaust valve is always more than intake
Valve lash on most small engines is between 4 and 6 thousandths (.004-.006). Any tighter and u rish burning a valve
Risk
Hey guys I just bought a predator 212 and I have it on my go cart and the throttle only works when I have the choke on all the way but by that time I'm already going 20mph how do u use the throttle all of the time and can u make a video showing how to setup the throttle and stuff with a centrifugal clutch
Bama Bassing that sounds like there is a problem with the motor
Matt Schork it's a brand new engine
I suspect a vacuum leak.
If the clutch is slipping then take the bell off and clean it with sandpaper same with both the bell and actual clutch pieces
I have the predator 212cc on my mini bike. I have a problem we're after like 20 sec to 1min after running it will just shut off on me. Can any body help me address this problem
Or put some oil in it.
If you want to get more top speed take out that cl2 cam and put in a black mamba 275 that will help alot. You can always go even bigger but once over 275 you have to start cleaning room inside.
Allen10390 pretty sure they have the mod2 cam in it
Anything over 265 lift cam you need dual springs. This is coming from dyno cams engine builder.
Love the videos however I cringe when I see the tools you use sometimes. Adjusting valves with adjustable Crescent wrench and vice grip pliers in this video shows bad habits to the young folks trying to learn mechanics and proper tool usage. Bad example in my book but I really do enjoy the video. Good quality!
when the engine is cold, .001. when it warms up, the clearance will open up to approx .003- or .004.
sitting the gasket surface on concrete? Brilliant.
What type of welder do you use?
Changing valves without reseating them? Should be losing compression, Big power loss
Taller tires! Also, I remember watching professional kart racing years ago, the drivers had to adjust the carburetor when they would hit the top speed straightaways.
VA Outdoors Sportsman On certain carbs that's true. I had a tillotson on methanol with an adjuster attached to the steering wheel.
play it at 3:30 its funny! "and i call BS on it" lol
Scary stuff, legend says there is a cascade fuel injection method to tackle the barrier of spinning speed in a single combustion’s duration for 16 strokes, 32 strokes and 64 strokes by injecting more fuel.
That performance head can perform in llong distance not for short distance.. less torque but in long distance it will perform well
Hey where did you get your seat from
where do you get the hemi version of the predator 212 engine? Does go power sports have them?
nashguy207 harbor freight
Get a bigger sprocket for you clutch then you would easily hit 60 they have some clutches that go up to a 19 tooth driver
So your replacing the enginee head with Mike's head?
Also .003 intake and .004 exhaust or .004 and .005 what ive been told multiple times
How did u not get water in carb. It was pouring.
Hello I love your videos
U guys should put a profiler on the in takes
Where is the video of Ike doing the porting and polishing of the head
you gotta lap valves when switching them around like that
Teaser...sounds like you got it. Can't wait for tomorrow's vid.
I would have lapped those valves first to ensure they are seating properly.
.003 was what it said on the sheet on the stage 2 dyno cam
We might be havin some chicken for dinner 😂
correct valve lash on those things is .006 intake and .008 exhaust, +/- 1 thou. ike was right to call bullshit on .003 both sides. if for some reason you've got metric feeler gauges that's .15 and .2, +/- .02mm on both.
What chassis is that it's exactly like mine
I never noticed the BMX seat post clamp on the silencer 😂 let me dig out my BMX stuff lol
Port and polish helps alot more on the big end...
I have a basically stock 212 predator on on a mini bike that will do 40 and will wheelie with the smallest amount of throttle applied
Brodie Lueken that just means you have a lot of weight over or behind the front axle
Brodie Lueken rear axle*
.003-.005 basically if there is too much gap the valves won’t open completely
I cant find the hemi head here in california
2:13 mark, noticed the arrow on the piston pointing down...isn't it supposed to point up?
No it points at the push rods
@@dizzywright4379Fuuuuuuudge. I gotta go fix something. : (
PLEASE PLEASE HELP my 212 won't hit full throttle it's the Hemi version it's only a year old and when I go out on my mini bike it revs up but never even hits governor anymore it's a complete power loss I just went out with my friend and his is so much faster my throttle linkage is perfectly fine so it's not that I'm thinking it's internal but any advice would be great
What about lapping the valves
What kind of fuel are you guys running?
Do you recommend the China mikuni carb or pay for the Japan carb
Japan is built to better tolerances and better quality.
I have a Tillotson TCT Mechanical fuel injection
Unit $30.00
I'm going to compare it with a Mikuni 22mm carb kit
I have all billit components & Flywheel
In a BSP 196c.c. engine with Black Mamba cam w/#18lb. Valve springs