Every gasket I have seen has the manufacturer ( at least the intials ) stamped into it. If you don't know whose gasket it is, how do you know it is the right one for your application? There are different thicknesses, as well as different cylinder diameters. Its very important for performance to have the right thickness.
Most important factor in installation is doing a proper head bolt torque.
First make sure that both the threads in the block and on the bolts are clean.
Put a couple of drops of motor oil on the bolts. Torque using proper pattern to approx. 65 - 70 lbs. (Volvo specified different torques for different B18/B20 engines. ) in 2 stages. Follow by a final torque once the engine has been run up to temp.
Regards,
John
V-performance.com
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