3rd member talk (ring&pinion setup etc.)

[firehawk]

Hmm, maybe using an external reservoir (possibly combined with the oil cooler) would be a good solution for increasing the oil capacity without making large protrusions such as the one on the Kai Power AE86. The reservoir could be pressurized so that an electric oil pump would suck from the bottom of the diff housing, fill the reservoir and cooler, and then return the oil back. The return path could be done through a pair of oil squirters, similar to those used to cool the pistons on smallport 4A-GE - putting these on top of the diff housing would ensure a constant lubrication on the gears with cooled oil. A relief valve would probably be needed in addition to the squirters to keep a constant pressure on the squirters as having them as the only return path would probably create too much pressure in the system.

This would require drilling four holes to the diff housing (intake, two squirters and relief valve) and making threads for them. The relief valve and squirters can be connected with copper tube, so that only two steel braided hoses would leave from the diff housing to the pump, reservoir and cooler which would be mounted to the body of the car. The power for the pump could be taken either from the fuel pump, or by adding a separate fuse and a switch to the dashboard/center console.