14cc Head Port And Polish Plus Valve Train Geometry

In today’s episode of DIYWILLY, I’ll do my best to port and polish the new 14cc head preparing it for the best flow possible. We’ll also dive in to the valve and rocker arm geometry. Hopefully everything checks out or it’s back to the drawing board. This Monster Predator 212 should be a screaming engine when done. Sorry this video is long but hope you will watch it till the end and leave good recommendations in the comments.
So follow along as we build this fresh new Predator 212 engine into an incredible monster machine..
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Links to Parts used (Affiliate Links)
Fresh HF Predator 212….www.harborfreight.com/generat...
Hose braided kit 10' 4AN Fuel Line Hose Fitting kit.....amzn.to/3v3G9YX
Two (2) 4AN AN-4 TO 1/8 NPT Male Thread Aluminum Anodized Fitting Adapter RED....amzn.to/3Ruu7zu
4Pc 4AN Hose Separator Clamps....amzn.to/47YblHJ
ARC (Affiliate Links):
6256 Billet Rod….amzn.to/3Q6zMMq
6625 Billet Flywheel….www.ombwarehouse.com/performa...
6058 Billet Side cover….www.ombwarehouse.com/dual-bea...
OMB:
14cc Cylinder Head….www.ombwarehouse.com/cylinder...
70mm Flat Top Piston….www.ombwarehouse.com/predator...
265 Cam (Non-HEMI)….www.ombwarehouse.com/cm-grind...
Stainless Steel Valve Kit….www.ombwarehouse.com/dj-ss-va...
308 Cam (Non-HEMI)…. www.ombwarehouse.com/308-grin...
5.260 Chromoly Push Rods….www.ombwarehouse.com/2-chromo...
5.200 Chromoly Push Rods….www.ombwarehouse.com/pushrod-...
Paul’s Karts:
Paul’s Karts PWK “D” Slide 28mm Carb….www.paulskarts.com/product/ca...
PWK Carb Jet kit….www.paulskarts.com/product/je...
Billet velocity Stack….www.paulskarts.com/product/bi...
24/28mm Intake Manifold….www.paulskarts.com/product/ma...
Billet Fuel Shut Off Valve….www.paulskarts.com/product/fu...
Paul’s Karts Hot Coil (Red)…. www.paulskarts.com/product/pr...
Fuel hose ¼”….www.paulskarts.com/product/fu...
3/8” in Line PCV Valve….www.paulskarts.com/product/3-...
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Filmed with a GoPro Hero 9 Black
Edited with DaVinci Resolve Studio 18.5
Disclaimer:
Please do not try to re-enact or recreate anything you see in my videos.
DIY Willy does not take any responsibility for injuries or equipment failure created by doing so.
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#ECcarburetors #MegaMoto #paulskarts #HarborFreight #innova #Predator #224 #NIBBI #OMBwarehouse #Gopowersports #212 #ARC #briggsandstratton #Briggs

[@KentuckyFriedFixes]

Good stuff. Love the new turntable! What a great idea!

[@DIYWilly]

It really helps. I saw it on RBG and wanted one. Thanks for watching!!

[@BUILDNIGHT]

I just came across your video and noticed that you have one of my MODIFIED Predator 212 DECALS! Very cool!

[@DIYWilly]

Hello BuildNight, Yes I purchased the 212, 49cc and I believe 224 decals from Amazon. I thought the 212 Modified was a great addition to the thumb nail. Thanks for watching!!

[@00lightning]

Nice build. You can usually flip the valve cover spacer to put the barb fitting to the left of the plug boot.

[@DIYWilly]

Good idea 👍. However this spacer has holes for 2 barbs. Thanks for watching!!

[@Lou-eye]

Nice job Willy! And nice swivel table! I used to port my 2stroke motorcycle cylinders and did my Big Block chevy 396ci heads, big time consuming job. Your motor should run really good and strong! You can never be too meticulous in engine building.👍🇺🇸

[@DIYWilly]

I’ve only ported the small engine heads. There a lot cheaper if you mess it up..😬

[@Lou-eye]

@@DIYWilly ..yeah for sure👍😄

[@williamdillingham5781]

The shims are to keep the springs from digging into the aluminum casting

[@DIYWilly]

Hello William, Thank you for that clarification. Thanks for watching!!

[@fatbuddycat]

I bet you can modify the lifters themselves. They're not air tight or anything, just an extension of the pushrod.

[@DIYWilly]

I did open the lifter bores up slightly in the block to relief stress. Anyway that’s an idea. Works good for Briggs engines. It’s possible also to use 160 lifter that are smaller in length and weigh less. Just match the push rods and you good.

[@fatbuddycat]

@DIYWilly yup those 160 lifters are great with the correct Pushrods.

[@mklein5179]

Hey Willy!!

[@DIYWilly]

Hey how ya doing!

[@travis48g]

Did you calculate the compression ratio with this combination?What fuel did you run in it?Thanks.

[@DIYWilly]

Hello Travis, No I did not calculate the compression ratio with this build. This combination has been done many times over by other engine builders. The piston is at deck height and with the .010 head gasket and smaller combustion chamber the engine is a strong runner. I have a .032 copper head gasket that I was told to try but honestly I haven’t had any problems with the .010 gasket. I use ethanol free 94 octane fuel in my engines and will soon be using 110. Thanks for watching!!

[@NouriGains]

did you end up keeping the 5.260 push rods in this build with the 308 or go to 5.200 length?

[@DIYWilly]

Hello Nouri, The combination I ended up with that worked perfectly was the 308 cam, 32lb springs and 5.200 push rods. The engine runs amazing. Great question I had to look up the final build spec on the engine. I couldn’t remember. Thanks for watching!!

[@Exploder206]

Just a heads up Willy, stock lifters can handle way more horse power than what you are gonna be making. I've never seen anyone break the stock ones as long as a good quality oil was used and you properly clearance and build your engine. Which you are doing lol

[@DIYWilly]

Yes the stock ones will be fine for this engine. Thanks for watching!!!

[@Greybuiltracing]

When would u want to use billet lifters? What rpm or horsepower?

[@DIYWilly]

Hello, I wanted the Billet lifters due to the 308 cam I chose. Unfortunately they needed additional machining to the block to work properly and I didn’t have the time. So I used the stock lifters. Thanks for watching!!

[@user-hp6sp3qg2q]

also and lb over 28 singles don’t have much travel so i’d get dual 32s instead 26s arrent enough for the 308

[@DIYWilly]

32’s have been installed since the video.

[@user-hp6sp3qg2q]

@@DIYWilly great! how is it?

[@DIYWilly]

Crazy good! So good I’m taking it off and will probably not run it again. Well for a while anyway. That bike got away from me and I crashed. It caused quite a bit of damage to a neighbor’s property and injury to me. In the engines defense I had the wrong gear on the back wheel and it was a wheelie machine. That bike tried to fly like a SpaceX Falcon 9 rocket. I’ll be going back to my more rideable engines on the small MM80 frame. Thanks again for watching!!

[@user-hp6sp3qg2q]

@@DIYWilly ahhh man that sucks hope your doing well and you’ll be back up in no time!

[@DIYWilly]

@@user-hp6sp3qg2qHello.. Thanks for watching!!

[@arronjohnston742]

i have the same ryobi dremel grinder as you, i found the flex shaft from my broken dremel fits it perfectly, makes it more controlable for me anyway when gringing, hope that helps....

[@DIYWilly]

Hello Arron, I was hoping it would fit. I really wanted a flex shaft. I did order a small pedestal grinder that has a flex shaft. Thanks for the heads up! Thanks for watching!!

[@Deucealive75]

How far in the hole is the piston?

[@DIYWilly]

I used my feeler gauge and it seemed flush at .002. Hoping that accurate.

[@user-hp6sp3qg2q]

the billet lifters also wear out pretty quickly… dlc lifters are better

[@DIYWilly]

I wasn’t able to use them so I put the original lifters back in. Thanks for watching!!

[@heathenprojects2639]

Awsome willy im resting today got my yard mowed yesterday really need to do something today but no energy week straight of 110 plus and WY trip has takin alot out of me

[@DIYWilly]

I know Sunday is a rest day but I’m usually so busy during the week that Sunday is a work day.

[@heathenprojects2639]

@@DIYWilly usually my only day to get anything done

[@DIYWilly]

@@heathenprojects2639 This engine was running great and then bam nothing. Took apart to investigate and found pitting in the new flat top piston and in the new 14cc head. Not sure where the debris came and the ring gaps moved together…? Anyway it’s all back together now and I’ll try and start it again this week. Some crazy frustration when one day it’s running like the monster it is and the next nothing… CRAZY!!!🤯😤

[@heathenprojects2639]

@@DIYWilly you will get it Willy I got faith in you I rested most of the day playing around in the garage I got the new door coming tomorrow to install about to have my shop

[@DIYWilly]

@@heathenprojects2639 Nice 👍!! I want a new shop…

[@alexlacroix9515]

That’s incorrect the more efficient your engine is the more tourqe you will make. There is nothing efficient at your top horse power rev. There is a big difference between efficiency and the max amount of fire these hot air pumps can move. It takes more fuel being burnt to allow more air though the engine. An engine that is noticeably more efficient will leave your ass out of the corner.

[@DIYWilly]

Great information! Thanks for watching!!

[@zam893]

Waste of time, I’m sorry not to be rude or anything. If you’re going to port a head at least do it right. Change out the stock vavle guide, for some bronze ones. Then shave it all the way down even the guide part so all that flow goes throw the middle and not the side!

[@DIYWilly]

Hello Zam, With anything there is more than one way to do it and opinions on how it should be done. This engine runs amazingly good and fast. Thanks for watching!!