This has been Part 3B of the 212 DUCAR Hemi Performance engine build series. In this video we will install the cylinder head, intake and Tillotson carburetor. The PVL flywheel will be lapped and installed, set the air gap on the coil and of course the small things like valve adjustment. If you've been following along this should complete the build. There is more information on the fuel pump install in the video titled: "Tillotson Carburetor Will It Work Without A Fuel Pump? Let's Find Out!"
00:00 Intro Cylinder Head
02:35 Intake and Carburetor
06:05 Push Rods and Rocker Arms
07:45 Adjust Valves
11:22 Lap PVL Flywheel to Crankshaft
15:48 Install Coil, Set Air Gap
17:30 Kill Switch Wire from Coil
18:26 Pull Start Cover
20:00 On/Off Switch Wiring
21:37 Mark Valve Cover For Pulse Fitting
23:07 She's A Runner!
I know these "follow along" builds aren't for everyone. I post these mainly for those with the same engine, using the same performance parts, so they can follow along and build their engine even if it's their very first time inside one.
While some of the details may seem a bit boring to seasoned builders, please remember the first time builder may need a few of those details during their first build.
Thanks for watching, I do appreciate each and every one of you.
Chris
The intake manifold used to mount the Tillotson clone carburetor came from Turk Brothers at : http://www.tbrwins.com/ The Part # is : ITC3
The DUCAR 212 Hemi engine build we're doing is an alternative to the 212 Predator Ghost Kart Racing engine. We'll add some performance to the DUCAR 212 Hemi and see how it stacks up against the Predator Ghost 212 HEMI in upcoming episodes.
DUCAR 212 HEMI Engine with PVL Flywheel: DYNO 2121000 $219.99
70mm Wildcat 223 Flat Top Piston Kit: Part# 340040007500K $19.99
This is the Wildcat 223 piston that will work with the Part # 8281 EC Pinnacle 3.353" Billet connecting rod in the DUCAR 212 Hemi block.
This one has valve reliefs cut to clear the valves in the 212 DUCAR Hemi head.
You'll need to choose your head gasket thickness based on the amount of quench you want for your engine. (The distance between the top of the piston and the bottom of the cylinder head)
Some guys like around .030 to .035 quench, I prefer .020 to .025 on a billet bearing rod / billet crankshaft engine build but on this one I'm probably gonna stick with .035+ due to the Hemi head design, for break in I will be using a .050 thick composite head gasket.
The camshaft I've decided to use on this build is the Mongoose 272. It has more duration than the Banzai 265 and Ghost 212's 252 camshaft as well as a bit more lift. I also considered running the Rattlesnake 252 for this build as it is very close to the 252 camshaft in the Predator Ghost 212 but ultimately went with the Mongoose 272 cam for the longer duration of 245 (more top end).
The valve springs that come on the DUCAR 212 Hemi look good (18 LB by their looks). For the camshaft break in I'll be installing stock 11LB valve springs for the initial run in. After 30 mins of run time after the new cam breaks in, the head will be pulled and I'll either use an inner spring with the stock 1112LB springs, or a new pair of 2226lb valve springs. The double spring will put the spring pressure right at 2427LBS and that's about the maximum of where I want to be for this camshaft as it's not a welded lobe cam.
The DUCAR 212 uses a Honda clone camshaft (.549.550 diameter) so it's your choice to install a cam from mild to wild.
Connecting Rod: EC Pinnacle 3.353 Forged Rod with bearing Part# 8281 $79.95
The EC Billet rod works with the 70mm Flat top Wildcat piston. The top of the 223 Wildcat piston is .016 below the deck on my block. Be sure to check yours and adjust your gasket thickness to match your chosen quench distance. Deck heights will always be different due to manufacturing so check your piston to head relationship on every block.
Bore Specs: 70mm
Stroke: 55mm
@DIYWilly is doing a new build on a Predator 224!
If you guys like Kart Racing check out @franksoutdoorlife for Kart Racing videos! Great video coverage! The Kart Camera rocks too!
@dirty7739 is also doing some great looking builds on a Tillotson 236 stroker engine with a DED billet head! He's got a lot of Predator builds and Drag Minibikes as well! I'm subscribed because I like what he does and we share much of the same philosophy. Don't let anyone intimidate you into thinking you can't work on your engine. You don't need a "Professional" to build a good running engine, with some time and effort you can do this!
@DarkCornerGarage features Custom Race Mini Bike builds. Complete chassis builds AND Performance Engine builds. Good Stuff!
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