12/25/06 – Modifying
the oil pan
Now, the first step was to remove the
oil pan. I could buy
the RB25 pan, but I don't want to for the following reasons:
a) it's 280 bucks
b) rb26 pan is cast aluminum, it's stronger and has better heat transfer. 1
c) rb26 pan has sick baffling, as well as kickouts
d) rb26 pan bolts to transmission. Rb25 does not
e) rb25 pan needs to be modified to work with the rb26 oil pickup. A substantial amount of the rb25 windage tray needs to be removed to facilitate fitment.
This is what a stock unit looks like:
Step one was to remove the differential and all the bearing races. A good portion of the remaining casting was removed with a sawzall.
At this point in time, I am
still happy with my decision to
use a modified RB26 pan. Currently,
motor is sitting on the floor of innovative tuning, right on the oil
pan. I doubt that
the stamped pan would still be
in one piece.
(1) It’s also substantially heavier…