2.0L OHC Engine Parts
Complete technical guide to the Corris Rivett's Ford Pinto-based engine. Every bolt size, wearable part, and assembly procedure for the 99hp powerplant.
2.0L OHC Engine - Complete Breakdown
Engine Specifications
Engine Block
The cast-iron engine block is the heaviest single component and the foundation for the entire powertrain.
- •Houses 4 cylinders for combustion
- •Contains main bearing journals for crankshaft
- •Features auxiliary shaft (unique to OHC design)
- •Wearable - Check for cracks and cylinder wear
Auxiliary Shaft System
The Aux Shaft is unique to this engine architecture (replaces the in-block camshaft of pushrod engines).
⚠️ If the aux shaft isn't rotating, the engine has spark and compression but NO fuel delivery!
Timing Belt System (CRITICAL)
The 2.0L OHC is an INTERFERENCE ENGINE. This is the most critical system to understand.
The valves and pistons occupy the same space at different times. The timing belt keeps them synchronized. If the belt breaks:
- 1. Camshaft stops rotating
- 2. Crankshaft keeps spinning
- 3. Pistons smash into open valves
- 4. CATASTROPHIC ENGINE DAMAGE
Engine Components
Engine Block
Block
Core component. Check for cracks.
Main Bearing Caps
Block
Torque critically important.
Rod Caps
Block
Secure piston rods to crank.
Oil Pan
Block
Requires gasket. Leaks if loose.
Cylinder Head
Head
Check for warping.
Head Gasket
Head
One-time use. Blows if overheated.
Camshaft Sprocket
Timing
Timing alignment critical.
Timing Belt
Timing
INTERFERENCE ENGINE - failure destroys valves!
Tensioner Pulley
Timing
Bearing can seize.
Water Pump
Cooling
Circulates coolant.
Alternator
Electrical
Charges battery. Squeals if loose.
Alternator Belt
Electrical
Drives alternator and water pump.
Fuel Pump
Fuel
Mechanical, driven by aux shaft.
Distributor
Ignition
Rotate to time ignition.
Intake Manifold
Induction
Vacuum leaks cause high idle.
Carburetor
Induction
Tuning required (AFR 13.5-14.0).
Exhaust Manifold
Exhaust
Rusts visually.
Flywheel
Transmission
Mass for smooth idle.
Clutch Disc
Transmission
Friction material wears with use.
Pressure Plate
Transmission
Clamps clutch disc.
Starter Motor
Electrical
High load in winter cold starts.
Complete Parts Reference
Troubleshooting Guide
Start-Up Issues
Engine Noises
Assembly Tips
Critical Torque Sequences
- •Main Bearing Caps: Center-out pattern
- •Head Bolts: Spiral from center outward
- •Rod Caps: Equal torque both sides
Winter Assembly
- •Use winter-weight oil (5W-30 or 0W-30)
- •Tune carburetor rich (13.5-14.0 AFR)
- •Ensure block heater is functional
- •Check all rubber components for cold cracking
Critical Warning
The 2.0L OHC is an interference engine. If the timing belt snaps, the pistons WILL hit the valves, destroying the cylinder head and pistons. Replace the timing belt preventatively!
Pro Tip
Cold air is denser than warm air. Tune the carburetor slightly rich (AFR 13.5-14.0) to compensate. A lean mixture in winter causes overheating and piston damage.