G2: DIY: Engine Swaps: C35 Swap *NEW VERSION*

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Contents

Tools and Supplies

Required and optional tools for this engine swap

Parts

List of parts that will be required from the donor RL and parts re-used from the Legend

Parts from your Legend

Parts from the donor RL

Misc Parts

C35 Swap Parts Interchange

Differences and similarities between the parts of the C32 and the C35 are discussed when swapping the motor into a Legend.

Interchangeable Parts

This list excludes parts related to the intake manifold as you may use the C32 or C35 intake manifold when swapping into the Legend, and each has its own list of required parts. The intake manifolds are covered later, in their own section.

  • A/C Compressor - '94-'95 (+some '93) Legend; '91-'92 (+most '93) Legends must use Legend compressor or swap fitting/valve manifold from RL to Legend compressor.
  • A/C Belt Tensioner and Bracket
  • Belts - Alternator, Power Steering and A/C
  • Camshaft Front Seal
  • Camshaft Rear Plug
  • Crankshaft, Rear Main Seal
  • Crankshaft, Rear Cover (rear main housing) and o-ring
  • Crankshaft, Front Seal
  • Cylinder Head Bolts
  • EGR Valve & Lift Sensor
  • EGR Bracket (on head)
  • Flexplate/Flywheel (Automatic only)
  • Idle Control Valve (IACV/EACV)
  • Intermediate Shaft & Bearing - Shaft that goes through oil pan for driver's side axle to differential
  • PGM-FI Main Relay
  • Orifice, Camshaft Bearing
  • Orifice, Lifter
  • PCV Valve
  • Power steering pump
  • Power steering pump upper bracket
  • Starter - slightly different design but 100% interchangeable
  • Sensor, Knock
  • Sensor, Coolant Temperature
  • Sensor, Coolant Gauge
  • Sensor, Cam Position - '93-'95 Legend identical; '91-'92 must use Legend sensor or splice connectors
  • Sensor, Oxygen
  • Sensor, Throttle Position - RL and '93-'95 Legend Type II with TCS only (upward facing connector); Type I and Type II non-TCS sensors face downward and interfere with C35 timing belt cover.
  • Sensor, Oil Pressure
  • Sensor, MAP - relocated to fuel rail on RL but is the same part #
  • Thermostat
  • Thermostat “goose neck”
  • Valve, Intake - Type I; Type II valves 1mm larger
  • Valve, Exhaust
  • Valve, Lifters/Tappets
  • Valve, Rocker Arms
  • Valve Seal

Interchangeable (With or Without Minor Modification)

  • Fuel rails - Re-designed aluminum billet fuel rail system with screw on type fuel pressure regulator (vs. bolt on for C32) and addition of muffler to dampen spikes in pressure. Will not bolt directly to C32 intake manifold.
  • Coolant temperature sensor and gauge sender switch spots on the water bypass. If tearing down the C35 manifold, use the C32 water bypass to prevent having to rewire these sensors.
  • Alternator Upper Bracket - Less adjustment is allowed for on the C35 bracket. When the C32 bracket is used the taller deck height prevents one of the bolts from lining up properly.
  • Coil Packs - C35 coil packs were redesigned with a spark detection system for OBD2 misfire detection. C32 coil packs have 3 prongs versus 2 on C32, the extra prong is for the misfire detection. They are electrically compatible, and can be used on Legend by de-pinning the C32 connectors and installing the pins into the C35 connectors with the misfire detection wire cut off. JDM C35 coil packs appear to be identical to Legend coil packs (with two prong connectors) and should work without modification.
  • Differential - Uses same internal parts and casting as C32 automatic diff. Eliminates the use of an internal oil cooler and associated pipes, but the “bungs” for them are still in the casting. Compatible with automatic Legends, for M/T use the Legend's cast iron differential. Uses different style speed sensor (use the C32 sensor).
  • Exhaust manifolds - Different part numbers, and shape, but compatible.
  • Mount bracket, driver's side - Completely different design. Uses same bolt pattern as C32. C32 bracket bolts on directly for swap.
  • Valve covers - Different design. C35 has integrated standoffs cast into the the valve cover for coil packs, while C32 uses screw in standoffs. Same gaskets, bolt locations, shape, etc. Passenger’s side valve cover does not have hole drilled and tapped for oil temperature sensor. It does have a bung that can be drilled out and tapped for the sensor.

Intake Manifolds

  • The C35 uses a completely different upper intake manifold and throttle body base. When using the C35 intake, it is recommended to use the C35 throttle body: it is redesigned with internally different ports and the EVAP vacuum nipple is facing the wrong way.
  • VIS/IAB butterfly mid-section has same part number as Legend and is 100% compatible.
  • Lowest section of the intake has a redesigned EGR setup with one hole on the driver's side instead of 2 and a baffle to prevent debris from entering the intake manifold. Compatible with Legend intake.
  • Intake Air Temperature sensor was relocated from the front (in C32) to the rear (in C35) of the manifold
  • Fast Idle Valve was relocated from the rear of the intake manifold (in C32) to the top of the throttle body base (in C35)
  • When using the C35 Intake manifold, also use these parts from the C35:
    • Sensor, air intake - screw in instead of flange
    • Fast idle valve - its coolant pipes are facing the opposite direction
    • Fuel Rails
    • Fuel Pressure Regulator - different design and fuel pressure
    • Throttle Body

Using the C32 Intake Manifold on the C35

Type I and Type II C32 manifolds will bolt directly onto the C35, when using the C35 heads. This enables usage of the C32 fuel rails and fuel rail covers for a stealth install and easier parts interchange. It does not require modification and elongation of the wire harness. In order to use the C32 intake manifolds you must change the pipe under the manifold and the water outlet on the back of the driver’s side head. This is necessary to provide coolant to the fast idle valve. When using the C32 intake, it’s recommended to also use the C32 Throttle Body. The upward facing TPS sensor on the C32 Throttle Body must be transplanted and calibrated from the C35, or a Throttle Body from a Type II with TCS may be used instead. The downward facing TPS sensor on Non-TCS and Type I C32's interferes with the upper timing covers of the C35.
When using the C32 Intake Manifold, also use these parts from the C32:

  • Sensor, Air Intake
  • Fuel Rails
  • Fuel Pressure Regulator
  • Fast Idle Valve
  • Throttle Body
  • Water pipe - under intake manifold
  • Water outlet - at rear of driver side cylinder head

Non Interchangeable C35 Parts

  • Alternator - Same mounting but different electrical connections.
  • Camshaft pulleys/cogs - C35 section width is thinner by 3mm
  • Crankshaft Pulley/Harmonic Balancer - Nose and offset of pulley are different due to the presence of the balance shaft drive cog on the crank. Belt pulley diameters remain the same. Belt position remains the same due to the modification of the offset of the pulley. Pulley is lightened by 2-3lbs when compared with the C32’s rubber damped pulley
  • Fuel Injector - C35 uses saturated injectors (12-14ohms) versus the C32's peak and hold type (1-2 ohms). Different physical electrical connectors. C35 injectors can be made electrically compatible by removing the injector resistor box.
  • Mount Bracket, Passenger Side - The engine mount system was completely changed for the RL, it used a completely redesigned subframe and mount positions were changed. The transmission mid-mounts in some RL’s were changed from the bottom of the bellhousing on the transmission to the rear of the engine mount, directly below the starter on the passenger’s side and next to the differential on the driver’s side. The brackets for these motor mounts should be removed for the swap. The passenger side front mounting bracket is shaped differently to clear the balance shaft. This requires cutting and welding the leg of the Legend’s mount onto the RL mount. The driver’s side mounting pattern and location is identical to the Legends and it bolts right on.
  • Oil pump - Different by magnitudes. Its case now supports the tensioner and front drive of the balance shaft.
  • Oil Pan - Different design. Uses different oil filter bung.
  • Oil Filter - Different shaft size, incompatible with C32.
  • Speed Sensor - Use C32 speed sensor.
  • Thermostat housing - Due to the eliminated port on water pump outlet, the opening is smaller to match. Uses a different shaped o-ring gasket. Thermostat and gasket remains the same
  • Timing Belt - C35 belt is one tooth longer (197 C35 vs 196 C32), and 3mm thinner.
  • Timing belt drive pulley/cog - C35 section width is thinner by 3mm
  • Timing Covers - Upper and lower covers are different.
  • Water Pump - Does not have hose nipples on passenger side like the C32 where they would interfere with the balance shaft drive. Overall shorter in length. Revised and different shape of water passage. Uses different shaped o-ring gasket. Eliminated port to thermostat housing, passage is smaller and shaped differently.

Eliminated parts

  • Engine oil cooler - The area where this once occupied in the C32 is now occupied by the balance shaft in the c35.
  • Differential cooling pipes and hoses - The RL has an uncooled differential.
  • PAIR system - When compared to a Type I C32 the PAIR system is completely eliminated. You must use the C32 driver's side exhaust manifold, C32 PAIR pipe and Type I C32 intake manifold to retain this emission system on a C35. Note that the Type II C32 doesn't have the PAIR system.
  • Air boost valve
  • Oil temperature sensor - Eliminated from rear of passenger's side valve cover, but bung is still there. See valve covers for more info.

Added Parts

  • Balance Shaft - A balance shaft was added to the passenger side of the block. Its inclusion changed the casting of the block significantly. It is obviously an engineering after-thought. At the rear of the block, one of the mounting ears was extended in a semi-circle to clear the balance weights. Therefore, one of the bell housing bolts on the legend transmission will not line up to it. It is driven off a separate cog on the crankshaft pulley and uses a separate belt and tensioner mounted to the oil pump. The balance shaft runs external to the block in a tube from the front gear drive to weights in the rear closest to the flywheel. The shaft spins out of sequence with the crank and requires a special method to time it properly.
  • Block Drain Pipe - An engine coolant block drain pipe is added on the passenger's side on what used to be the coolant supply line to the differential. It is capped off with a rubber cap, simply remove the cap to drain the engine block of coolant.

Engine and Transmission Removal

Uninstalling the C32 and transmission, including optionals for AT to MT swaps

C35 Preperation

Preparing the C35 for installation: transmission, gaskets, belts, custom mount, etc

Engine and Transmission Installation

Installing the C35 and transmission


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