2014 ARP Catalog

MAIN BOLTS Far superior to any other main bolts available for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly steel, all ARP main bolts feature a reduced wrenching head, large underhead radius and rolled threads for the utmost in reliability. The threads are rolled after heat-treating which gives them about 2000% better fatigue strength than most main bolts that are threaded prior to heat-treating. The popular High Performance Series is rated at 180,000 psi, and is a premium replacement for OEM fasteners. Pro Series main bolts are application-specific, rated at 200,000 psi, and designed for use in competition engines. Hardened parallel-ground washers are included with each kit.

MAIN BOLTS

MAIN & HEAD BOLT INSTALLATION

1. Clean and chase all block threads to ensure maximum thread engagement and accurate torque readings.

3.  Install the main caps or head gasket and head, checking for improper fit, bind- ing or misalignment. Make sure all mating surfaces are fully seated. Install the washers on the bolts with the chamfered side of the washer located towards the head of each bolt. Lubricate the washers and the under- head of the bolts with ARP Ultra-Torque fastener assembly lubricant. SPECIAL NOTE: All wet deck head bolt applications will require some type of seal- ant on the bolt threads to prevent coolant leakage. Always check each application (import and domestic) prior to installation to determine whether your application has a “wet deck” or “dry deck” cylinder block.

2. Clean and inspect all hardware prior to installation, looking for shipping damages and defects.

4. Seal all threads extending into a water jacket with ARP thread sealer. Lubricate all threads on dry deck and/or main cap applications with ARP Ultra-Torque fas- tener assembly lubricant.

5. Following the engine manufacturer’s torque sequence, tighten the bolts to the recommended torque value found on the instructions provided with each kit .

High Performance

Pro Series

Application

2-Bolt Main

4-Bolt Main

2-Bolt Main

4-Bolt Main

BMW S1000RR Motorcycle ARP2000 - Crankcase main bolt kit (29 pcs. with sealing washers)

201-5201

BUICK

V6 Stage I V6 stage II

123-5201 123-5202

455 cid

125-5201

CHEVROLET, SMALL BLOCK Large journal - hex nut Large journal - 12 pt nut

134-5001

134-5202

234-5201 234-5203

Large journal - with 1/2” straps on front & rear caps

Small journal

134-5002

Dart - SHP iron block

134-5204

World - Motown iron block

134-5203

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