What boost level is safe for a stock RB26DETT?
The factory RB26DETT runs around 10-11 psi (0.7 bar) from the stock ceramic twin turbos. Most tuners consider 14-16 psi (0.95-1.1 bar) the safe ceiling on stock internals with upgraded turbos and a proper tune, producing 350-400 whp. Beyond that, forged pistons, rods, and a head stud kit are strongly recommended. The RB26 block is robust; the stock rod bolts and head gasket are the weak points at elevated power levels.
From the shop
Browse the shop →Original JDM designs, made to order.
Next: plan the move
Found the car. Understand the handover.
Before making promises about collection, coordinate the inspection, paperwork, seller release and transport. Give each part of the purchase its own check.