1JZ Open T4 Manifold

Application Notes:

Toyota 1J and 1.5J Engines Non-VVTI

-Standard with single Tial MVR (44mm V-band) gate

-Up to GT42R (PTE8285) Turbo

-Up to 4" downpipe

Tubing specs: 1.660" OD, 1.380" ID, 0.140" wall rated for 1300hp

The DOC Race Topmount Turbo manifold is for the more extreme setup looking for the potential limit of the vehicles engine. This manifold has seen well over 1000hp and is designed for peak-power situations. The DOC Topmount manifold can still be used for “streetable” vehicles, but is solely designed to make maximum horsepower and allow you to fit much larger frame turbo’s then traditional Bottom-mount Manifolds. D.O.C. still applies our elaborate porting process to complement maximum flow within ALL of our manifolds.