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Tips & Tricks

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Engine Tuning

Tighten connecting rods correctly

How to install ARP connecting rod bolts

by
Bartek Bartoszewicz Tuning Professional

#Kolbenringe

#Pleuelschrauben

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The complete guide to installing your con rods

Con rods are without doubt the last thing you would want flying around the place when you step on the gas. But the con rod bolts have to withstand huge forces, which is why correct installation is really vital. Here you’ll find a complete guide to fitting the con rod bolts, and a table showing the correct stretch of each bolt.

It’s a good idea to have the following equipment to hand:

CONTENT

1. How to mount ARP connecting rod bolts
2. Do you need support?

How to install ARP connecting rod bolts

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

universal

ARP strech gauge for conrod bolts

(1)

Articlenumber: 21111arp

Streckung genau messen

verstellbarer Anschlag

für alle gängigen Dehnschrauben

Ready to ship immediately!

€249.95

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.

universal

ARP Ultra Torque assembly lubricant BIG

(4)

Articlenumber: 21110arp

professional assembly

for all screws & bolts

350 gram with brush

Ready to ship immediately!

€29.95

universal

Holts brakes and parts cleaner 600ml

(0)

Articlenumber: 2100358

Clean brake system

Remove oil, debris & grease

Made in Germany

Easy application

Ready to ship immediately!

Content: 0.6 Liter (€24.92* / 1 Liter)

€14.95

Bartek Bartoszewicz

Tuning Professional

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