ARP head stud bolts Ford Ecoboost 289-302 & Tidiga 351W U/C
ARP - Head studs
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Write a reviewARP head stud bolts Ford Ecoboost 289-302 & Tidiga 351WU/C
U/C is an abbreviation for "Undercut", which means that the bolts have a slightly smaller diameter on the unthreaded part of the bolt.
The undercut improves the tightening of the cylinder head more evenly compared to those that are not undercut as they stretch. This can be an advantage if, for example, the cylinder head gasket would not be 100% smooth over the entire surface, then the bolts compensate for this.
Size Socket: 1/2 12pt, 3/16 Allen
Thread: 7/16 UNC
Tightening torque: Tightened in three stages.
Step 1: 26.6 ft/lbs Or 36 nm
Step 2: 53.3 ft/lbs Or 72.2 nm
Step 3: 80 ft/lbs Or 108.4 nm
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| Bilmärke | Ford |
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