Supertec

The issue with clearance is not exclusive to only Nissan OEM or N1, but the issue is some what masked with Tomei and Jun as they are thicker gears, but again using flat drive they are not immune from breaking the inner gear. One of our customers broke a Tomei inner gear. We have since supplied him a Tomei spine conversion kit.

If you are using a extended sump and doing lots of track work, drag and very high revs where you need good flow/pressure and cannot justify the cost of a dry sump setup.

As with any product R&D is the key to over come any initial design issues and potential problems. These gears we have supplied be it N1, OEM, etc have been tested in high powered street and track to ensure that they work as intended further more Tomei and Jun version have been used in 1000-1200bhp power RB26/30 engines where they are also hammering the limiter and revving up to 11k rpm. The key to having a reliable setup is prior machining work to ensure that the collar is pressed on with the clearances provided and the correct temp requirements are met. With our design there is ample clearance in the spline engagement to allow for any out of centre crank alignment with in the manufacturers recommended tolerance. Always best to get the main ends line bored if for what ever reason crank is not a lining up straight. More pictures facebook.com/supertecracing