GT3 Manifold Individual Throttle Body Kit. Porsche 911  ❭  AMS90501

The Adapt Motorsport GT3 manifold individual throttle body kit enables 996 GT3-style intake manifolds and a resonance flap system to be integrated with an existing ITB-equipped classic Porsche 911 engine. Configurations are available with a PA12 nylon or machined aluminium intake T-piece, with manifold inclusion determined by the selected option.

Fits:
Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
Porsche 911 1978-1983 3.0L / SC
Porsche 911 1984-1986 3.2L
Porsche 911 1987-1989 3.2L G50
Porsche 964 (911) C2 1989-93
Porsche 964 (911) C4 1989-93
Porsche 993 (911) C2 1994-95
Porsche 993 (911) C4 1994-95
Porsche 993 (911) C2S 1994-95
Porsche 993 (911) C4S 1994-95

What This Product Does

This system provides the hardware needed to connect an individual throttle body installation to large-volume GT3 intake manifolds. Its resonance flap assembly, intake T-piece, filter and vacuum-control components form an integrated intake arrangement for a custom classic 911 engine build.

Functions

• Connects compatible GT3 intake manifolds to an existing individual throttle body system
• Supports operation of the supplied intake resonance flap
• Provides filtered air through the included K&N air filter
• Supplies the vacuum hardware, hoses and fittings required for flap control
• Allows a choice of PA12 nylon or machined aluminium intake T-piece

Technical Details

• GT3 manifold port diameter: 49mm
• Reference comparison stated by the manufacturer: standard 964 manifold 43mm and 3.2 manifold 39mm
• Base nylon T-piece manufactured from automotive-grade PA12
• CNC-machined resonance flap assembly uses sealed roller bearings
• AMS machined components have a black anodised finish
• Custom adapter option comprises six machined aluminium adapters made to supplied ITB dimensions

Kit Contents and Options

The base kit contains the intake T-piece, K&N air filter, CNC-machined resonance flap assembly, four resonance-flap and throttle sleeves, six intake-adapter sleeves, hose clamps, vacuum canister, solenoid, check valve, connector kit, mounting hardware, vacuum hoses, fasteners and fittings.

Nylon T-piece configurations are offered with or without a pair of AMS GT3 intake manifolds. Aluminium T-piece configurations use a machined filter adapter matching the resonance flap assembly and are also offered with or without manifolds.

The ITB-to-GT3 adapter set adds six custom aluminium adapters. These require accurate measurements from the individual throttle body installation and are only supplied with the applicable base-kit options; the adapter set is not offered separately.

Why This Kit May Be Required

This kit is intended for engine builds where an existing ITB system is to be combined with GT3-style intake plenums and a controlled resonance flap. Correct measurements, mechanical installation and engine-specific calibration remain essential because throttle body dimensions and modified engine specifications can differ between applications.

FAQs

• Are intake manifolds included?
  Manifold inclusion depends on the selected configuration. Options are available both with and without a pair of AMS GT3 intake manifolds.
• What T-piece materials are offered?
  The system can be configured with an automotive-grade PA12 nylon T-piece or a machined aluminium T-piece and filter adapter.
• Are adapters supplied for the existing throttle bodies?
  Six custom aluminium adapters can be specified, but accurate dimensions from the throttle body kit must be provided for their design and manufacture.
• Can the custom adapter set be ordered separately?
  No. The manufacturer specifies that the adapter set is only supplied with the applicable base-kit configurations.
• Does installation require engine calibration?
  Engine management and fuelling should be configured for the individual engine, throttle bodies and intake arrangement by a suitably experienced specialist.