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Developed by Gary Berg 1/1987

    We have tested cases with increased torque on the 6 center main bearing nuts on all high performance engines. This has provided great improvement to case life. First, "never" use the red sealing nuts with the seal down. I use the flat washer and the 19mm wrench size nuts, which we can supply. When you use the red seal nuts, install them with the red side up away from the washer. The o'ring in the case at the stud will seal the case properly against leakage. With this combination we increase the torque on street applications or engines running up into the 6000 to 7500 RPM range to 29-30 lbs. and on all out race applications or over 7500 RPM to 33-34 lbs.
    We have been running tests on all of our race and most street engines and found another area of great benefit to case life has been to spot face all the 8mm stud or bolt locations so we can use the 8mm head nut with the 15mm wrench size, and the larger diameter and thicker head nut washer. With this combination we move the torque from 14 lbs. up to 19-20 lbs. In some instances the studs will need to be backed out of the case slightly. Only back out as needed to achieve full nut coverage. These nuts and washers are available individually or in kits from us.

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