Connecting rods
I-beam connecting rods to the most popular engines. I-beam connecting rods can handle more power than the traditional H-beam connecting rods. ZRP connecting rods are delivered in weighted sets with tolerances that only more expensive rods offer. Bearing assembly can be read about here. The ability to also select connecting rod bolts according to purpose provides the best performance per cost that we know when it comes to connecting rods. Connecting rod bolts tightening torque.
Subcategories
Products
Connecting rods, Conrods
How much force can a connecting rod handle?
There is no number on this, just general assumptions based on fuzzy statistics. For example, a thicker connecting rod with more material can handle more power than a smaller connecting rod with less material. Bolt quality and mounting affect this, at least as much as the connecting rod itself. Things like bearings and small end bushing material also affect this to a large extent. General figures are that a well-sized I-profile connecting rod can handle 200 hp per cylinder, but even this can be easily destroyed with aggressive ignition.
Does the small end conrod bushing need to be machined before assembly?
Some connecting rods have a clearance that matches the manufacturer's piston pin. Other connecting rods have a bushing that needs to be bored to get the correct clearance. A smaller clearance is better than a bigger one, as this can be made bigger. Excessive play means changing the bushing.
Will upgraded connecting rods fit the engine block?
Aftermarket connecting rods are usually more robust as they must handle more engine power. Therefore machining of some engine blocks/castings may be required. This is entirely individual and means that goods are taken away in the exact area that allows the connecting rod to move freely. Check this carefully at assembly, and think about how much clearance you want.
Are the connecting rods weighted?
The connecting rods sold in sets are usually weighted and this is clearly stated in the product information. How carefully this is done varies by manufacturer. connecting rods that sell individually are thus not weighted.
Note
- Never swap places on assembled connecting rods
- Never change the location of the already mounted rod end
- Do not turn the connecting rod cap