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Forged conrod R5 Alpine Turbo - Renault 5 Alpine 7701458393
415.00 €
Out of stock
High-strength forged connecting rod for naturally aspirated Renault 5 Alpine and Renault 5 Alpine Turbo engines.
Made from 4340 forged steel, it matches the dimensions of the original rod and fits as a direct replacement, with no engine modification.
Technical specifications
- Material: 4340 forged steel
- Original Renault reference: 7701458393
- Dimensions: identical to the original rod
- Fitting: direct replacement, no modification
- Small end lubrication: drilled for oil flow
- Under-piston lubrication: big end drilled for the oil jet
Fitting with slotted bearing shells
The big end is drilled to allow the piston-cooling oil jet to work.
To better understand the differences between original and forged connecting rods, and their advantages for an engine build or rebuild,
see our technical article on forged connecting rods
Price includes shipping.
On the bottom end, you don't cut corners: a strip-down and rebuild is complex, time-consuming and expensive. Better to spend the budget once and start from a sound base. These rods are checked for metrology and squareness, and above all they use floating gudgeon pins — far simpler and safer than the original interference-fit pins, where a poorly executed fit can ruin both the rod and the piston.
Frequently asked questions
Does the piston oil jet cause a drop in oil pressure?
No — contrary to popular belief, the oil jet does not cause a drop in pressure. Its orifice has a very small diameter, which greatly limits the amount of oil flowing through it. Its role is simply to create a light jet of oil to spray and cool the underside of the piston.
The oil pump's flow rate, even the original one, is far greater than the engine's needs. If an oil pressure problem appears, it generally does not come from the jet, but rather from engine measurements outside tolerance, in particular due to excessive clearances.
To find out more, see our article and its accompanying video: « Oil pressure », available on the blog.
Can a standard bearing shell without an oil slot be used?
Yes, it is entirely possible and poses no technical problem. The only difference is the absence of an oil jet under the piston.
Can I use my original pistons with these connecting rods?
No — the pistons of the Renault 5 Alpine and Renault 5 Alpine Turbo are designed for gudgeon pins fitted with an interference fit in the rods.
Our forged connecting rods are designed for floating pins, a mechanically superior solution that also makes assembly and disassembly much easier.
If you nevertheless wish to keep the original pistons, it is possible to have grooves machined into the pistons to fit circlips and adapt them to a floating-pin setup.
Which bolts do you recommend for assembly?
We develop our connecting rods for assembly with ARP bolts.
After your purchase, we will give you the exact reference of the bolts to use. You can then buy them directly from an official reseller such as GT2i.
