1. Home
  2. Engines
  3. Tillotson 212R Engine
  4. Tillotson 212R Head & Valve Train
  5. Tillotson 225R/RS 27/25 5mm Cylinder Head Assembly w/26lbs Springs
Tillotson 225R/RS 27/25 5mm Cylinder Head Assembly w/26lbs Springs
138220050 Tillotson 225RS Cylinder Head Assembly w/26lbs Springs
Write a Review

Tillotson 225R/RS 27/25 5mm Cylinder Head Assembly w/26lbs Springs

Part Number: 138220050
Your Price: $68.99
Availability: In Stock.

Send to:

*We'll ask for shipping info at checkout

Description

The cylinder head is the same JT-207 used on the Tillotson 196R but modified to fit 27mm and 25mm Valves with 5mm stems. 


The 27/25mm JT-207 is the same head used on the Tillotson 212R but includes the spec 26lbs springs used in The Tillotson T4 225RS Spec Engines. The 225RS is an excellent bolt-on head that can support many mild cams, including the MOD2 and popular 265 lift cams, including our Banzai 265. 


The 5mm stems help to reduce weight and friction between the valves and the guides while improving flow. The valves also use automotive-style split locks and retainers.  


We highly recommend racers in The Tillotson T4 or T225RS Classes to keep a couple of extra cylinder heads available. Like the Briggs LO206, the valve seal is crucial for the engine to maintain spec performance. The rev limiting coil and noise reducing exhaust builds a lot of exhaust and cylinder head temperature that can cause the exhaust valve and seat to wear. The valve leak bleeds off the combustion and reduces power and performance. 



Cylinder Head Assembly

- Intake Valve: 27mm

- Exhaust Valve 25mm

- Valve Stem 5mm

- Combustion Chamber 20.9cc

- Rocker Arm Assembly

- 26lbs Springs

- Pushrod Guide

- Retainers & Locks


Related Items

Recently Viewed Items