Information for a 2.0 engine swap - SOHC to DOHC
#11
#12
#13
#15
clarification
in the bottem paragraph are you saying that if i get the camshafts out of a dohc 2.4 liter chrysler they have more torque versus a stock dohc 2.0 liter?
4. Is the 420a engine from an eclipse the same as the neon DOHC?
No, the Neon 2.0 DOHC (Engine code: ECC) and Avenger/Sebring/Eclipse/Talon2.0 DOHC (Engine code: 420a) are different. Similar, but different. In other words your neon does not have a 420a engine. This is a common misconception among new 1st gen DOHC owners. The 420a head is unique and has reversed flow; The exhaust manifold sits in front of the car and wraps down in front of, then under the engineblock.The air intake is routed behind the engine towards the rear of the compartment to enter the head. Many bottom end parts for a 420a will work for the ECC such as pistons, rods, timing components, bearings, head gasket, etc. Another common swap is for neon owners to use the valve cover from the 420a (which is has raised lettering that reads: "DOHC 2.0L 16 VALVE."
Also note that the neon DOHC (ECC) shares onlyits cylinder head in common with one other engine: the Chrysler 2.4 DOHC engine found in the 1st gen stratus, caravan, etc. They are the exact same casting number. If you look at the back of the cam gears on the ECC's head, they read "2.4 front." This is because the gears are flippedwhen used on the 2.4 DOHC. The camshafts, however, are different. The bottom endon the 2.4 is also different. It has a longer stroke and produces more torque. It is also popular to swap the 2.4 DOHC into 1st gen neons. In most cases you will find a 2.4 swap to be more worthwhile, but requiring more work and parts.
4. Is the 420a engine from an eclipse the same as the neon DOHC?
No, the Neon 2.0 DOHC (Engine code: ECC) and Avenger/Sebring/Eclipse/Talon2.0 DOHC (Engine code: 420a) are different. Similar, but different. In other words your neon does not have a 420a engine. This is a common misconception among new 1st gen DOHC owners. The 420a head is unique and has reversed flow; The exhaust manifold sits in front of the car and wraps down in front of, then under the engineblock.The air intake is routed behind the engine towards the rear of the compartment to enter the head. Many bottom end parts for a 420a will work for the ECC such as pistons, rods, timing components, bearings, head gasket, etc. Another common swap is for neon owners to use the valve cover from the 420a (which is has raised lettering that reads: "DOHC 2.0L 16 VALVE."
Also note that the neon DOHC (ECC) shares onlyits cylinder head in common with one other engine: the Chrysler 2.4 DOHC engine found in the 1st gen stratus, caravan, etc. They are the exact same casting number. If you look at the back of the cam gears on the ECC's head, they read "2.4 front." This is because the gears are flippedwhen used on the 2.4 DOHC. The camshafts, however, are different. The bottom endon the 2.4 is also different. It has a longer stroke and produces more torque. It is also popular to swap the 2.4 DOHC into 1st gen neons. In most cases you will find a 2.4 swap to be more worthwhile, but requiring more work and parts.
#17
#20