TOMEI NISSAN RB28KIT(RB25 NEO6) 87.0mm VALVE RECESSED With Bearings
: 250021
: NZD $8,533.04
TOMEI RB28KIT(RB25 NEO6) 87.0mm VALVE RECESSED With Bearings
FEATURE / SPEC
SPEC
PISTON
| Bore (Φ) |
Pin Him (Φ) |
Length (mm) |
Recess | Comp.Height (mm) |
PistonCrownVolume (cc) |
Weight (g) |
Pin weight (g) |
Total weight (g) |
|---|---|---|---|---|---|---|---|---|
| 86.5 | 21.0 | 60 | ○ | 30.0 | -11.2 | 363 | 106 | 469 |
| × | -13.0 | 365 | 471 | |||||
| 87.0 | ○ | -11.2 | 371 | 477 | ||||
| × | -13.0 | 373 | 479 | |||||
| 87.0 (RB25 NEO) |
○ | -2.9 | 365 | 471 |
| Top ring B×T(mm) | Second ring B×T(mm) | Oil ring B×T(mm) |
|---|---|---|
| 1.2×3.1 | 1.2×3.9 | 2.5×3.1 |
CRANKSHAFT
| Stroke (mm) | Weight (kg) | STD Stroke (mm) |
|---|---|---|
| 77.7 | 20.0 | 73.7 |
CONNECTING ROD
| Conrod | Conrod Bolt | Conrod Bearing | Material | ||||
|---|---|---|---|---|---|---|---|
| Length (mm) |
L.Diam×Length (mm) |
S.Diam×Length (mm) |
Bolt Size | Height Under Neck (mm) |
Inner Circum (mm) |
Bearing Width (mm) |
|
| 119.5 | φ51×21.8 | φ21×21.8 | 3/8-24 | 40 | 48 | 17.0 | SNCM439 |
Compression Ration Specs
| Bore | φ86.5 | φ87.0 | φ87.0（RB25 NEO6) | |||
|---|---|---|---|---|---|---|
| Valve Recess | Without | With | Without | With | With | |
| Piston Crown Volume(cc) | -13.0 | -11.2 | -13.0 | -11.2 | -2.9 | |
| Gasket Thickness (mm) |
1.0 | 9.0 | 8.7 | 9.0 | 8.8 | |
| 1.2 | 8.8 | 8.6 | 8.9 | 8.6 | Approx. 9.0 | |
| 1.5 | 8.6 | 8.3 | 8.6 | 8.4 | Approx. 8.8 | |
| 1.8 | 8.3 | 8.1 | 8.4 | 8.2 | ||
| 2.0 | 8.2 | 8.0 | 8.3 | 8.1 | ||
| Gasket Bore | 87.5 | 88.0 | 88.0 | |||
DATA
KIT WITH BEARINGS INCLUDED
Tomei has made an option to include their Competition Bearing Series product with our kits. All the engine internals are brought to static temperature (20 degrees Celcius) and blueprinted with 0.040~0.060mm clearance bearings.
This eliminates the measuring and blueprinting process for the customer, so the kit can be installed with less hassle.
