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Details
Con'rod is the weak point of 4B11 engine. Upgrading of con'rod is required for performance enhancement.
HKS developed "Forged I-Beam" connecting rod, which is "Strong" and "Affordable".
POINT-1
"Strong and affordable" is the concept of the "Forged I-Beam" Con'rod
I-Beam was selected for 4B11. It is strong and affordable with "high grade chromium molybdenum steel", "carburizing heat treatment" and "fracture splitting manufacturing for the big end".
Although it looks like stock part, it is strong enough for high performance tuning vehicles.
H-Beam connecting rod
Although it is strong against torsion, it is hard to absorb torsion.
Lighter weight than I-Beam for the same strength level.
Shaving process is more and expensive. (For high performance vehicles.)
I-Beam connecting rod
Although it is used for mass production vehicles, even Formula 1 engines use this shape.
Although it is weak against torsion, I-Beam absorbs it.
It is heavier than H-Beam. Easier production.
As explained above, H-Beam and I-Beam have their own merits and demerits.
POINT-2
Fracture splitting manufacturing method, which has high connection rigidity, for the big end
Fracture splitting has higher connection rigidity than normal knock pin type as the contact surfaces are more since they are uneven.
Although the looking is not good, since they are connected with uneven surfaces, it has great rigidity as shown in the pictures below.
POINT-3 Strength for more than 500ps
Tested on an engine bench with GT3240 Full Turbine Kit without any problem.
HKS Forged Piston (21003-AM003) is recommended.
HKS developed "Forged I-Beam" connecting rod, which is "Strong" and "Affordable".
POINT-1
"Strong and affordable" is the concept of the "Forged I-Beam" Con'rod
I-Beam was selected for 4B11. It is strong and affordable with "high grade chromium molybdenum steel", "carburizing heat treatment" and "fracture splitting manufacturing for the big end".
Although it looks like stock part, it is strong enough for high performance tuning vehicles.
H-Beam connecting rod
Although it is strong against torsion, it is hard to absorb torsion.
Lighter weight than I-Beam for the same strength level.
Shaving process is more and expensive. (For high performance vehicles.)
I-Beam connecting rod
Although it is used for mass production vehicles, even Formula 1 engines use this shape.
Although it is weak against torsion, I-Beam absorbs it.
It is heavier than H-Beam. Easier production.
As explained above, H-Beam and I-Beam have their own merits and demerits.
POINT-2
Fracture splitting manufacturing method, which has high connection rigidity, for the big end
Fracture splitting has higher connection rigidity than normal knock pin type as the contact surfaces are more since they are uneven.
Although the looking is not good, since they are connected with uneven surfaces, it has great rigidity as shown in the pictures below.
POINT-3 Strength for more than 500ps
Tested on an engine bench with GT3240 Full Turbine Kit without any problem.
HKS Forged Piston (21003-AM003) is recommended.
Additional Information
| Manufacturer | HKS |
|---|---|
| Fitment | N/A |
| Color | N/A |
| Note | N/A |
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Tegiwa Imports Limited acts as a broker and offers credit from PayPal Credit and other providers. Subject to status, terms and conditions apply.
PayPal Credit is a trading name of PayPal (Europe) S.à.r.l. et Cie, S.C.A., 22-24 Boulevard Royal L-2449, Luxembourg.