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EC 236cc Stroker Kit Assembly for the Tillotson 72mm Block
EC 236 Stroker Kit Assembly Exploded Diagram
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EC 236cc Stroker Kit Assembly for the Tillotson 72mm Block

Part Number: 236-SKA
Online Price: $229.99
Phone Order Price:$269.98
You Save:$39.99(15%)
EC 236cc 58mm Stroker Kit for Tillotson 225R/RS Engines
Availability: In Stock.

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Description

EC 236cc 58mm Stroker Kit Assembly for Tillotson 72mm Blocks


Unlock serious performance gains with EC’s 236cc 58mm Stroker Kit, engineered specifically for the Tillotson 225R/RS 72mm bore blocks. This premium stroker kit increases engine displacement, torque, and overall efficiency—perfect for racers and builders looking to push the limits of small engine performance.


By increasing the stroke from stock to 58mm, this kit adds over 12cc to the 225R (223.93cc), bringing the total displacement to 236.15cc (14.41ci). To put that into perspective, the 225R added as much displacement over the 212cc base engine as this stroker adds to the 225R. Compared to a standard 212cc clone or Predator engine, this upgrade delivers a 24.48cc increase in displacement.


Key Performance Benefits:

  • Increased Displacement:
    Boosts total displacement to 236.15cc, enhancing power output, especially in torque-heavy applications.
  • Higher Compression & Piston Speed:
    The longer stroke improves mechanical leverage and combustion efficiency, resulting in better throttle response and mid-range power.
  • Built for Tillotson 72mm Blocks:
    Designed specifically for Tillotson 225R and 225RS engines. While technically compatible with other 72mm bore blocks, EC does not provide support for non-Tillotson setups.
  • Engine Builder Recommended:
    For a hassle-free build, check out the EC 236R U-Build-It Kit, which includes the block, gaskets, bearings, and hardware to complete your bottom end.


Compatibility & Camshaft Fitment Notes:

Engines using 58mm crankshafts (such as the Wildcat 223, Predator 224, or EC stroker builds) may require clearancing around the compression release on 196cc/212cc cam cores.


For easier installation, we recommend using 223/224 camshaft cores to avoid interference with crankshaft counterweights.


Kit Includes:

  • 58mm Stroker Crankshaft
  • Tillotson 72mm Piston Assembly
  • EC Billet 3.415" Connecting Rod (Part #8279)


Maximize your engine’s potential with EC’s precision stroker kit—proven, reliable, and track-tested for serious small engine performance.

FAQ

What engines is the EC 236cc 58mm stroker kit compatible with?

This kit is designed specifically for Tillotson 225R and 225RS engines with a 72mm bore. While it may fit other engines that accept a Tillotson 72mm piston, EC only supports use with Tillotson blocks.


How much displacement does this stroker kit add?

The kit increases engine displacement from 223.93cc to 236.15cc, an increase of over 12cc, or 24.48cc more compared to a standard 212cc engine.


Do I need to modify my camshaft for this kit to fit?

Possibly. Engines with 58mm crankshafts (like Wildcat 223 or Predator 224) may require clearancing on 196cc/212cc cam cores to avoid contact with the crank counterweights.
We recommend using 223/224 camshaft cores for best results and easier installation.


What is the EC 236R U-Build-It Kit and how is it different?

The 236R U-Build-It Kit includes an unassembled short block with the Tillotson 72mm block, gaskets, bearings, and hardware needed to complete the bottom end. It’s ideal if you don’t already have a compatible Tillotson block.


What’s included in the 236cc stroker kit?

The kit includes:

  • 58mm Crankshaft
  • Tillotson 72mm Piston Assembly
  • EC Billet 3.415" Connecting Rod (Part #8279)

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