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L19 torque specs for VR4 1g 4g63 6 bolt engine.

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Hello Andre.

What would you torque L19s head studs for the VR4 1g 4g63 6 bolt engine. I know to do it in 3 equal steps. ARP not ver helpful. And would I need to re torque after running. I’m running a hks gasket.

Here are your APR instructions, which includes proper torque sequence:ARP Custom Age Instructions- Be sure to follow the instructions to the letter, including chasing the existing block threads with a tap to remove any binding debris. Do not be tempted to tighten the studs within the block - hand tight only.- You must use the ARP Ultra-Torque Lube to minimize false torque readings due to friction. Get some if you do not have it.- A bar-style torque wrench is more accurate. 95-100 ft/lbs is correct for the L19s, and represents 75% of the torque required to bring the stud to failure.

and I do recommend retorquing the head after two or three heat cycles, it is scary the different replies I got from reputable builders on this all having their own thoughts and they ranged from 90 to 110 ft/lbs

Regards Ross

Regards Ross

Thanks Ross

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