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EC 236cc Stroker Kit Assembly for the Tillotson 72mm Block Predator Hemi 212/223 58mm Stroker kit Ducar/Tillotson 212E/223E / Predator NON Hemi Stroker Kit
EC 236cc Stroker Kit Assembly for the Tillotson 72mm Block
List Price: $240.00
Our Price: $220.00
Sale Price: $200.00
Savings: $40.00
The New 236 EC Stoker Kit Assembly adds little more thank 12cc to the Tillotson 225R/R (223.93cc) to make it 236.15cc or 14.41ci.
This means it added as much displacement to the 225 as the 225 added to the 212 Tillotson, predator, and other clone Engines of similar size. Or if you compare it to the 212 (211.67cc) engines, this kit will make it 24.48cc more displacement.
This kit is specific for the Tillotson 225R/RS 72mm bore block. While it could fit other clones or Hondas that fit the Tillotson 72mm piston, we do not offer support for those combinations. If you need a Tillotson 72mm block, we highly recommend getting our 236R U-build-It kit that comes as an unassembled short block with gaskets, bearings, and hardware to complete the bottom end.

Our New Rotating Assembly Is Designed For The Predator 212 Hemi To Increase Displacement To 223cc

The Predator Hemi Has A Shorter Deck Height Than Most Other Honda-Based Clone Engines. Due To The Deck Height, It Was Difficult To Use Current Aftermarket Components With The 58mm Stroker Crank In This Block. Usually, Stroking The Engine Required Clearance Of The Rod, Cam, Crank, And Piston For Fitment. We Have Resolved These Issues With Our 58mm Stroker Kit For The Predator Hemi.

Kit Components:

Wildcat 223cc, 70mm Flat Top Piston- The Wildcat Piston Provides Clearance Between The Crank’s Counterweights and Piston Skirt. The Wildcat Piston Is Also Lighter Due To The Different Designs. The Piston Comes As A Complete Assembly With Rings, Wrist Pins, And Circlips.

EC Pinnacle Forged Rod- The Forged Rod Is Shorter Than Stock To Set The Flat Top Piston At Zero Deck Height (Some Variance May Be Expected with Mass-Produced Blocks.) Unlike Many Other Rods, The Dipper Doesn’t Interfere With The Cam Core, Making Installation Easier.

Wildcat 58mm Crankshaft- the Crankshaft Is the Same Used EC236R And The Wildcat 223 Engine. The Crankshaft Should Only Require Clearance Matching With The Camshaft, Depending On The Lobe Profile And The Compression Release. The Crankshaft Also Using The Honda / Clone Tapered Flywheel; The Hemi Flywheels Will Not Work. We Recommend Using Our SK200 Rev Wheel.

The Purpose Of This Kit Is To Offer More Displacement To Predator 212 Hemi For Classes That Are Limited To Predator Brand Engines.

Our New Rotating Assembly Is Designed For Ducar/ Tillotson 212E To Increase Displacement to 223cc.
Tillotson 212E And A Non Hemi Has A Taller Deck Height Than The Predator 212 Hemi. Due To he Deck Height Will Require A Slightly Longer Rod That The Other Ones We Use In Our Predator 212/223 Stroker Kit To Put The Piston Flush With the Deck.
Usually, Stroking The engine required clearance of the rod, cam, crank, and piston for fitment. We have resolved these issues with our 58mm stroker kit for the Ducar/Tillotson 212E Hemi.
This kit is made for the Ducar/Tillotson 212E Blocks and is not designed to fit the Tillotson 212R Engines.
Attention !!! Non Hemi Flywheels will not fit this crank! You would need to purchase our 6619 Billet Flywheel
Kit Includes:
Wildcat 223cc 70mm Flat Top Piston - The Wildcat Piston provides clearance between the cranks counterweights and the piston skirt. The Wildcat piston is also lighter due to the different designs. The piston comes as a complete assembly with rings, wrist pins, and circlips.

EC Pinnacle Forged Rod - The Forged rod is shorter than the stock to set the flat top piston at zero deck height (some variance may be expected with mass produced blocks) Unlike many other rods, the dipper doesn't interfere with the cam core, making installation easier.

Wildcat 58mm Crankshaft - The Crankshaft is the same used in EC 236R and the Wildcat 223 Engine. The crankshaft should only require clearance machining with the camshaft, depending on the lobe profile and the compression release. The crankshaft also using Honda/clone tapered flywheel: the flywheels will not work. We recommend using our SK200 Rev Wheel.

EC 263R 76MM X 58MM Rotating Assembly
The 263R Rotating Assembly is made for the Tillotson R-Series Blocks bored to 76mm

This 263cc kit is made of a 76mm hypereutectic piston (same material as the 72mm Tillotson Racing Piston), EC's Pinnacle Forged Connecting Rod, and 58mm Wildcat Ductile Iron Crankshaft.

In the world of automotive and motorcycle engine engineering, 250cc is a common denominator for performance engines. The bore and stroke are very common among a single cylinder, 2-cylinder, three-cylinder, and 4-cycle motorcycles. The increased bore sizes don't just add more displacement but increases compression and vacuum, allowing larger valves, ports, and camshafts with less adverse side effects, I.e., low-speed torque and responsiveness.

Whether in karting, motorcycle, or automotive performance, making 1hp per cubic inch is a respectable engine, 1.5hp per ci is often expert level, and 2hp ci is exceptional by few elite builders. All dynos are different and may reflect higher power per ci; however, you can divide your current power level by your displacement and then multiply by 16.06, which is the ci of the 263R kit for estimated theoretical power output.

For comparison, we should look at the differences in displacement among other small block engines.
212 70mm x 55mm = 211.67cc (12.92ci) difference 51.45cc (3.13ci) 25%
223/224 70mm x 58mm = 223.21cc (13.62ci) difference 39.91cc (2.43ci) 18%
225 72mm x 55mm = 223.93cc (13.67ci) difference 39.19cc (2.38ci) 18%
228 72mm x 56mm = 228cc (13.91ci) difference 35.12cc (2.14ci) 16%
236 72mm x 58mm = 236.15cc (14.41ci) difference 26.97cc (1.64ci) 12%
254 76mm x 56mm = 254.04cc (15.5ci) difference 9.085cc (0.55ci) 4%
263 76mm x 58mm = 263.12cc (16.05ci) difference 51.45cc (3.13ci)

The 76mm piston is very lightweight, which can help with the "balance" of the rotating assembly, improved acceleration, and increased durability. The piston journal's improved strength is that it is wider than the Tillotson 72mm piston and uses a longer 13mm wrist pin.

We measure the weight of common stock pistons assemblies (piston, rings, wrist pin, and clips) and a couple of market pistons of similar sizes to see how they compare to the 76mm piston assembly. The 76mm piston assembly weights 195g.

68mm Clone Dish Piston (Lightweight) -207g
70mm Predator Hemi Fat Top Piston -203g
72mm Tillotson Racing Piston -172g
2.8335 Wiseco Single Ring Piston - 192g
2.985 Wiseco Single Ring Piston -208g

The New 76mm piston is 8mm larger than the 68mm piston and 6mm more than the typical flat top 212/223/224 piston that comes in the clone 196cc clone, but the 76mm assembly weighs 10-12g less. The 2.8335 Wiseco is 4mm smaller and only weighs 3g less, and the nearly equal-sized 2.985 piston weighs 13g more.

You will also gain inc compression, which can impact what fuel you run or possibly the crankshaft and cylinder head you choose.

22cc Combustion Chamber
w/.045 Head Gasket & Zero Deck - 10.67:1
w/.035 Head Gasket & Zero Deck - 11.1:1

20cc Combustion Chamber
w/.045 Head Gasket & Zero Deck - 11.42:1
w/.035 Head Gasket & Zero Deck - 11.92:1

18cc Combustion Chamber
w/.045 Head Gasket & Zero Deck - 12.31:1
w/.035 Head Gasket & Zero Deck - 12.9:1

16cc Combustion Chamber
w/.045 Head Gasket & Zero Deck - 13.35:1
w/.035 Head Gasket & Zero Deck - 14.06:1

14cc Combustion Chamber
w/.045 Head Gasket & Zero Deck - 14.73:1
w/.035 Head Gasket & Zero Deck - 15.6:1

Best of all the features is the price. Compared to all billet assemblies that cost nearly 2.5 times as much, the 263R Rotating Assembly is only $280, which may not be much than a bored Tillotson Block.