Tips & Tricks
Engine Tuning
Tighten connecting rods correctly
How to install ARP connecting rod bolts
0 Comments
The complete guide to mounting your connecting rods
Connecting rods are certainly the last components we want flying around freely as soon as we step on the gas. However, connecting rods are subject to enormous forces, which is why proper mounting is especially important. Here you will find complete instructions on how to mount the connecting rod bolts, as well as a table showing the correct stretch for each bolt.
It is best to have the following tools ready:
- Brake cleaner
- ARP Assembly Lubricant
- Ratchet or electric screwdriver
- Dial gauge for connecting rod bolts
How to install ARP connecting rod bolts
Important installation instructions
- Disassemble and clean the rods (including bolt and beam threads) to remove rust preventative.
- Apply ARP Molylube to the threads and under the head of each bolt.
- Assamble the rod to the piston. The rod bearing notches must show to the intake of the engine, due to rotation direction of the crankshaft!
- Install rods by bringing cap and beam into alignment. Tap into place before installing bolts (DO NOT USE BOLTS TO PULL CAPS INTO POSITION) Each rod is numbered and MUST be assembled with the same number on cap and beam.
Rod torque specs
1 ft./lb. approximates 1,356 Nm
| Type | Size Inch | Size metrich | Stretch Inch | Stretch mm |
|---|---|---|---|---|
| ARP 2000 | 5/16" x 1.500" | 7,9mm x 38,1mm | 0.0056" | 0.14224mm |
| ARP 8740 | 3/8" x 1.600" | 9,5mm x 40,64mm | 0.0047" | 0.11938mm |
| ARP 2000 | 3/8" x 1.600" | 9,5mm x 40,64mm | 0.0058" | 0.14732mm |
| ARP 8740 Wave Loc Bolt & Nut | 3/8" | 9,5mm | 0.0063" | 0.16002mm |
| ARP 8740 | 7/16" x 1.400" | 11,1mm x 35,56mm | 0.0046" | 0.11684mm |
| SCAT 2001 | 7/16" x 1.500" | 11,1mm x 38,1mm | ||
| ARP 8740 | 7/16" x 1.600" | 11,1mm x 40,64mm | 0.005" | 0.127mm |
| ARP 2000 | 7/16" x 1.600" | 11,1m x 40,64mm | 0.0062" | 0.15748mm |
| ARP 8740 | 7/16" x 1.800" | 11,1mm x 45,72mm | 0.006" | 0.1524mm |
| SCAT 2000 | 7/16" x 1.800" | 11,1mm x 45,72mm |
All statements without guarantee. All rights reserved.
Do you need support?
We take over the professional mounting of your ARP connecting rod bolts! Just contact us by phone or write us in the chat.
His first car was a Polo Mk1 with a 40 Weber twin carburetor and 129 PS (95 kW). His second was an Audi 50. Today Bartek tunes Lamborghinis to 1000 PS (735 kW). Even as a young boy, Bartek disassembled vehicles and put everything back together better. He wrote his high school diploma with oil on his fingers. The trained automotive mechanic with a focus on engines and gearboxes was determined to go into motorsports. In his 10 years in Formal 1, he supervised 73 races, including as engine mechanic for Ralf Schumacher at Toyota. Since 2010, he has dedicated himself fully to his company BAR-TEK® Motorsport and helps his customers to bring VW and Audi engines to peak performance.
Expert in
Engine
Gearbox
The right accessories for your connecting rod bolts
Tip
universal
BAR-TEK® Motorsport
V2 dial gauge for con-rod bolts BAR-TEK®
Guaranteed to fit in your car!
Ready to ship immediately!
universal
Guaranteed to fit in your car!
Ready to ship immediately!
Content: 0.6 Liter (€9.92* / 1 Liter)
universal
Guaranteed to fit in your car!
Ready to ship immediately!
BAR-TEK up close
