The JUN connecting rod is made by shaving in order to pursue lightness and strength, this form has no futility. The material of a connecting rod is used SCM440. And connecting rod bolts are made by ARP. If big end is transformed at the time of high rotation, a metal will burn. In order to prevent the phenomenon, it was made the form which distributes stress.

The meaning of strengthened connecting rod
Connecting rods are the parts which are easy to be made lighter since it is the most commonly overlooked of all engine parts. However, it is also one of the most vital internal parts. The high output of a turbo engine in recent years is amazingly high and it is becoming impossible to already correspond with a stock connecting rod. As for the high response which is the maximum charm of NA engine, the weight of connecting rod influences response greatly. In addition, whole balance by the identity of a weight position, burden reduction of the crank metal by reduction of big end weight, as for a connecting rod, many performances are required.

Strength of the big end
Many cases as a trouble of connecting rod, is touching unequally of the metal or scorching. As the cause, when pulling tension force by the inertia weight of a piston affects connecting rod, a big end causes transformation. It is considered as a cause that the joint of connecting rod cap can not keep required clearance. The JUN SUPER CONNECTING ROD prevents the morphing at the time of high rotation by correcting the form of a big end and raising strength and maintains clearance.

JUN'S SUPER CONNECTING ROD SPECS:
Material: SCM440
Heat Treatment: Quenched and Tempered
Hardness in Heat Treatment: HRC32 to 36
Surface Treatment: Double shot pining
Bolts: ARP suited for 200,000 Psi clamp load.

Engine: 4G63
Small End: 22mm
Big End: 48mm
Center Distance: 150mm
Weight: 556g

APPLICATION:
Mitsubishi 4G63 Engines

Notes:
- These specs and figures are approxiamte values as stated from JUN and should be used as a reference only. The actual products weight may vary.