Engine Assembly Insights: K-series Reliability for Honda CR‑V Owners and Builders
If you’re hunting for an OEM‑spec long block that drops in without drama, the Engine Assembly for K24Z1 CRV 2.4L for Honda has been getting a lot of attention in shop circles. I’ve seen it land on benches from Arizona to Auckland; mechanics like that it shows up clean, measured, and ready to button up. And yes, it comes from 289 Heping East Road, Chang’an District, Shijiazhuang, Hebei—an address many parts buyers will recognize.
Why this K24Z1 long block matters
The CR‑V’s K24Z1 is a DOHC i‑VTEC workhorse. Realistically, owners want a quiet cold start, solid mid‑range torque, and emissions compliance. Shops want consistent machining and paperwork. This unit checks those boxes. In fact, many customers say the NVH feels “new‑car-ish” once the mounts and ancillaries are refreshed.
Product specs (shop‑friendly)
| Parameter | Spec (≈ values; real‑world may vary) |
|---|---|
| Engine code | K24Z1, 2.4L DOHC i‑VTEC |
| Displacement | 2354 cc |
| Bore × Stroke | 87.0 mm × 99.0 mm |
| Compression ratio | ≈9.7:1 |
| Output window | ≈166–180 hp (SAE J1349), ≈161 lb‑ft |
| Redline | ≈6,800 rpm |
| Block / Sleeves | Aluminum block, cast‑in iron liners |
| Emissions compatibility | ULEV‑II/Tier 2 Bin 5 when paired with OEM systems |
| Warranty | Varies by vendor; common 12 mo. parts‑only |
| Expected service life | ≈200k+ miles with proper maintenance |
Process flow and testing (what shops ask me about)
- Materials: aluminum open‑deck block, iron liners, forged‑style TTY head bolts, nitrided camshafts (spec‑dependent).
- Machining: thermal cleaning, crack check, CNC line‑boring, deck resurfacing, plateau‑hone (≈RA 10–20 µin), valve seat cutting.
- Assembly: measured bearing clearances, ring end‑gaps to Honda spec, TTY fastener torque/angle, sealants per service manual.
- Testing: compression ≈180–210 psi (warm), leak‑down ≤8% on test stand, oil pressure ≥10 psi/1k rpm, power verified to SAE J1349 where dynoed.
- Docs: run sheet, torque map, and (on request) material certs; facilities often ISO 9001/IATF 16949 aligned.
Application scenarios
– Direct replacement for 2007–2011 CR‑V K24Z1. – Fleet refresh where downtime is pricey. – Engine swap projects using CR‑V ECU and emissions gear (verify immobilizer and sensor mapping). To be honest, the cleanest results come when you keep the intake, sensors, and catalyst from the original vehicle.
Customization options (ask before you buy)
Long block vs. short block, gasket set inclusion, oil pump and VTC actuator pre‑installed, dyno sheet add‑on, and export crating. Some vendors can pre‑prime with break‑in oil, which is handy.
Vendor comparison (what I typically see)
| Vendor | Typical Price | Warranty | Lead Time | Certs | Notes |
|---|---|---|---|---|---|
| Oujia (Engine Assembly for K24Z1 CRV 2.4L for Honda) | Competitive | ≈12 months | Stock to 2–4 weeks | ISO/IATF aligned (docs on request) | Clean assembly, good packaging |
| OEM Reman | Higher | 12–36 months | Dealership lead times | OEM program | Excellent docs; pricier |
| Salvage Yard Take‑out | Lowest | 30–90 days | Immediate | N/A | Mileage unknown; riskier |
A quick, real‑world case
A regional courier (mixed 2008–2010 CR‑V fleet) swapped in three Engine Assembly for K24Z1 CRV 2.4L for Honda units over six months. After 25k–40k miles each: oil consumption under 0.3 qt/5k mi, average fuel economy returned to baseline, and cold‑start clatter essentially gone. Not scientific, but it lines up with what independent shops report.
Installation notes
Use new TTY head bolts, OEM spec coolant, and follow torque/angle from the Honda service manual. Replace wear items (water pump, rear main seal) while the engine is out. After install, perform idle learn and CKP pattern learn—tiny steps, big difference.
Authoritative references
- SAE J1349 Engine Power Test Code – Spark Ignition and Compression Ignition Engines, SAE International.
- Honda Service Information (TechInfo), CR‑V 2007–2011 Engine (K24), American Honda Motor Co.
- IATF 16949:2016 Automotive Quality Management System Standard, IATF.
- U.S. EPA Tier 2 / CARB ULEV II emissions frameworks for light‑duty vehicles.
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