The 3.0-liter V6 Honda JNA1 was produced from 2005 to 2007 only for the hybrid version of the seventh-generation Accord for the USA. It is a J-series engine with Variable Cylinder Management and produces 255 hp and 315 Nm.
J-series family: J25A, J30A, J35A, J37A, J35Z, J35Y, J32A, J30Y, JNA1.
Specifications
| Production years | 2005-2007 |
| Displacement, cc | 2997 |
| Fuel system | distributed injection |
| Power output, hp | 255 |
| Torque output, Nm | 315 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 86 |
| Piston stroke, mm | 86 |
| Compression ratio | 10.5 |
| Features | SOHC |
| Hydraulic lifters | no |
| Timing drive | belt |
| Phase regulator | i-VTEC |
| Turbocharging | no |
| Recommended engine oil | 5W-20 |
| Engine oil capacity, liter | 4.3 |
| Fuel type | petrol |
| Fuel consumption, L/100 km (for Honda Accord 2007) — city — highway — combined |
9.7 6.3 7.8 |
| Weight, kg | 153 |
The engine was installed on:
- Honda Accord 7 USA (CM) in 2005 – 2007.
Disadvantages of the Honda JNA1 engine
- A rare engine, so finding a used donor is difficult;
- The main weakness is oil leaks from the VCM cylinder deactivation gaskets;
- If the oil level drops, the camshaft lobes wear quickly;
- Watch the timing belt and the cooling of the hybrid battery;
- There are no hydraulic lifters, so the valve clearances must be adjusted every 50,000 km.
Frequently asked questions about the Honda JNA1
How much power does the Honda JNA1 make?
The Honda JNA1 develops 255 hp and 315 Nm of torque.
How much oil does the Honda JNA1 take and which one?
Engine oil capacity: 4.3 liters. Recommended oil: 5W-20.
Does the Honda JNA1 have a timing belt or chain?
The Honda JNA1 uses a timing belt.
Is the Honda JNA1 turbocharged?
No, the Honda JNA1 is naturally aspirated.
Does the Honda JNA1 need valve clearance adjustment?
Yes, there are no hydraulic lifters, so the valve clearances have to be checked and adjusted periodically.
What is the fuel consumption of the Honda JNA1?
Honda Accord 2007: city 9.7, highway 6.3, combined 7.8 L/100 km.
What cars was the Honda JNA1 installed on?
Honda Accord 7 USA (CM) in 2005 - 2007.
What are the common problems of the Honda JNA1?
A rare engine, so finding a used donor is difficult. The main weakness is oil leaks from the VCM cylinder deactivation gaskets. All known problems.
