BILLET PISTON KIT + I-BEAM CONROD SET
 

BILLET PISTON KIT + I-BEAM CONROD SET

Code No. 21004-AH001

*Discontinued.

To improve the performance of the CR-Z using the factory connecting rods, the durability of the factory parts restricts the improvement. Using this Piston Kit and Connecting Rod Set with the HKS GTS7040 Set-up Kit can increase the maximum engine output to 300ps and the maximum torque to 36 kgf・m; the CR-Z can be high performance hybrid sports car.

 

 

 

 

 

■Feature

【PISTON KIT】

  • Factory replacement & standard bore size piston kit.
  • Billet pistons are made from the 80mm-L60mm Aluminum rod material.
  • Honda factory piston pins (18mm Semifloating pins) are required.
  • Honda factory piston rings are required.
    The compression ratio when using the pistons with HKS Head Gasket is as follows:
    HKS Head Gasket t=0.8mm Gasket Bore: 75.0mm 8.7
    HKS Head Gasket t=1.2mm Gasket Bore: 75.0mm 8.4

 

【CONNECTING ROD SET】

  • Semifloating pins on the connecting rod small end.
  • The durability is improved by 186% comparing to the factory's durability with the 158.8(mm2) minimum cross-sectional area of the rod.
  • The M8x1.0 sized connecting rod bolts are used for better rigidity.

* In-house test at 336PS/43.78kgf・m confirmed the durability and safety (including the Supercharger drive loss).

 

 

■諸Specifications

  HKS Stock
Bore x Stroke φ73×89.4mm φ73×89.4mm
Comp. Ratio   ε8.7/8.4 ε10.4
Gasket thickness HKS t 0.8/1.2 t 0.80
Displacement (cc) 1496
Piston Bore dia. φ73
Compression height 26.0mm
Concave portion capacity 17.5cc 8.7cc
Material φ80-L60 AL Casting
Ref. weight 178.5g 198.9g
Pin Size φ18 φ18
Ring Top size φ73×1.0×2.3
2nd size φ73×1.0×2.3
Oil size φ73×2.0×1.9
Connecting rods Material SCM440H -
Ref. weight 380g 314.5g
Bolt M8×1.0 M6×1.0
Ref. capable torque 43.8kgf-m 30.47kgf-m

 

 

■Graph (300ps spec.)

 

  Power Torque
GTS7040 80φ 300.5ps/6,100rpm 35.9kg-m/5,800rpm
GTS7040 85φ 285.5ps/6,300rpm 32.8kg-m/6,100rpm
GTS7040 90φ 253.1ps/6,300rpm 29.5kg-m/5,900rpm
Normal 143.4ps/6,100rpm 19.8kg-m/2,700rpm

 

* For safety precautions and product warranty liabilities, the impeller's maximum RPM should not exceed 110,000 rpm. HKS will not be responsible for any damage caused by the use of this product beyond the impeller's maximum RPM limit.

 

 

Type Product Engine Capacity (ml) Type Boring, Honing Full Flow Modification Code No. Manual Remarks
BILLET PISTON KIT + I-BEAM CONROD SET Billet Piston + I-beam Con'rod Set LEA-MF6 1496 Φ73.0 - Φ18 NO NO 21004-AH001 * Discontinued.

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