Product Description
- 2002-2005 WRX
- 2006-2007 WRX
- 2008-2014 WRX
- 2004-2007 STi
- 2008-2014 STi
- 2015-2021 STi
- Brand: Tomei
- Manufacturer's Part Number: 193113
- Manufacturer's Warranty: 1 Year Warranty
- Condition: New Product
FITMENTS:
Subaru
| Manufacturer's Description: Crank bearing cap needed to secure strict metal clearance of the crankshaft by fixing bearing firmly at the time of high rotation and high load, enduring the force from bend or torsion vibration. However, in combination with a common bolt and nut, no matter what strengthen bolt it may used, bolting power concentrates on from third mountains to the 1st mountain of the screw, and the total bolting power cannot be increased beyond a certain value. Moreover, excessive stress is concentrated and may damage the bolt. Stud bolt, on the other hand, is applied dynamic design to its threading so that the bolting force is dispersed to all the screw threads and mighty bolting power is generated. FEATURE / SPEC MATERIAL* Chromemoly 8740 SIZEM10 P1.25 • HOW THE EJ BLOCK OPENS Since the EJ cylinder block lies flat and splits into 2 halves the crankshafts movement phenomenon puts extra burden on the studs with the 180° phase reciprocating motion of the pistons. When the gap opens this prevents the Main Bearings from maintaining the correct clearance which will lead to an engine blow. The TOMEI studs will ensure that the blocks are held together even during extreme conditions. • BOLT STRETCH LIMITS Bolts and screws in general will stretch when placed under stressful conditions. The stock bolts will tend not to return perfectly to its original shape once stretched due to the manufacturing methods used for the original purpose of the bolt design. Tuned engines will go through many procedures which require the bolts to be reused during every step. When having a dummy head installed and getting a bore and hone, when checking for bearing clearances and so on. So when the bolts are removed and torque up repeatedly bolt stretch management will then become difficult to manage the and retain the strict clearances required. The TOMEI Stud bolts are the best choice for high performance precision engines which require the fixed elastic range of the bolt set for repeated use and to maintain performance. The TOMEI Bolts will keep your engine together when needed most. • ROTATING SURFACE HEAT TREATMENT Rotation processing is the method of Rotating Die and Work Hardening the raw core of the bolt is placed on the cradle between the two rotating die with pressure applied from both sides. The metallic crystals within the bolts are then deformed at a microscopic scale, and then interacted with one another to make up a strengthened bolt that carries increased yield strength. The chromoly steel of the Tomei strengthened bolt is first heat treated and rolled on the rotating die, increasing impact resistance, surface strength, and longevity. These standards add up for the highest quality product available. • ANGLE TORQUE BOLT TIGHTENING METHOD An engine cannot be properly built without the use of the angle torque method when tightening certain bolts. It is necessary to utilize a special angle gauge when tightening strengthened studs and connecting rod bolts. Applying torque to the bolts without this specialized tool can lead to immediate or eventual catastrophic failure of the engine assembly. |
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