What size are Subaru head bolts?
The Snap-on Headbolt Socket for Subaru vehicles (No. S6214) is a 1/2″ drive, 12 point 14mm mid-length specialty tool that is designed to remove and install headbolts on 1995 to current Subaru vehicles.
Do Subaru head bolts need to be replaced?
When it’s done properly, the head bolts shouldn’t be permanently stretched to their yield point, as they are with the TTY method. For this reason, it may not be absolutely necessary to replace the head bolts. In fact, Subaru service information does not specify new head bolts as part of a head gasket repair job.
Can you use head bolts twice?
Can I reuse head bolts? A head bolt should not be reused if the threads are galled or badly damaged. Chasing damaged head bolt threads with a die will clean up the threads but also remove material (metal) and undermine the head bolt’s ability to torque down and hold to specs.
Does Subaru use torque yield bolts?
Some head bolts are torque-to-yield bolts which mean they stretch when you torque them down. Subaru head bolts aren’t like that. They are just standard high strength bolts.
Do I have to replace head bolts when replacing head gasket?
A poorly installed gasket leaks and can damage other engine components. All in all, it’s often best to install new head bolts when you work on your cylinder head or head gasket, unless you can be absolutely sure the age and condition of your current ones. It will save you headaches and cash in the future.
Can ARP head bolts be reused?
Are ARP bolts and studs re-usable? Yes. As long as the fasteners have been installed and torqued correctly, and show no visible signs of damage, they can be re-used. If they show any signs of thread galling or corrosion, they should be replaced.
Why is it important to remove the cylinder head bolts in the proper sequence?
These bolts connect the cylinder head to the engine block through the head gasket. As such, you must remove (and later reinstall) the head bolts in the proper sequence to avoid damage to the cylinder head. Head bolts ensure a proper seal between the cylinder head and the engine block.
