Engine Modifications & Upgrades

Tailored for GT3 Type Intakes:
Specially designed to fit GT3  intake manifolds (with built-in offsets) perfectly accommodating the narrower 964/993 engines.

Product Overview:
Crafted from top-quality aircraft aluminum, our Porsche 964/993 to GT3 Billet Intake Runners offer optimal performance. 
Available in head diameters of 41.5mm, 42.5mm, 44mm or 45.8mm with standard injector sizes. 

Versatile Compatibility and Configurations:
Compatible with standard rails or engineered for use with the IslandWorks/Nuke system, featuring a direct mount fuel regulator. 

Superior Craftsmanship and Finish:
Each runner boasts a natural machined finish and includes a base gasket insulator, ensuring optimal performance.

Important Note:
To ensure effective heat insulation, this product requires a flat cylinder head seal, offering better performance compared to the usual seal type.
Supplied with reinforced high thermal plastic gaskets for thermal insulation

Product Details:
Replace your aging plastic intake runners on the Porsche 964/993 with meticulously 3D milled billet versions in aircraft aluminum, offering durability and aesthetic enhancement.

Enhanced Specifications:
Available in head diameters of 41.5mm or 42.5mm, paired with standard injector sizes. 

Flexible Compatibility and Configurations:
Compatible with standard rails 

Important Note:
To ensure effective heat insulation, this product requires a flat cylinder head seal, offering better performance compared to the usual seal type.
Supplied with reinforced high thermal plastic gaskets for thermal insulation

Craftsmanship and Finish:
Featuring a natural machined finish, these runners are equipped with a base gasket insulator for 

Fits:
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Also Fits
Porsche 911 - 1974 to 1989 fitted with Adapt Motorsport Inlet Manifold Adaptor Kit

Available in Anodised Dark Silver or Anodised Black

Our billet and anodised fuel rail set bolts directly to the standard 964 / 993 intake adaptors as well as our own 2 bolt adaptor kits for earlier 2.7ltr, 3.0ltr and 3.2ltr engines.  
Using O ring fittings to the fuel rail, and AN 6 JIC fittings this allows for a very flexible choice of fuel hose arrangements.  

Replicate the factory 964 system, or the 993 system, or really simplify and use a dead head system.  

Rails are shipped with a combination of fittings or plugs.

This set makes it very easy to add fuel pressure sensing to the rails for those that want to tune, log or use protection strategies in your aftermarket ECU setup.

Check out our matching fuel pressure regulator to complete your fuel system today

Kit Includes:

• Fuel Rails x 2
• ORB to JIC Fittings x 4
• ORB Plugs x 2
• Screws to fix to factory intake adaptors

• Replacement for 96410205001.
• For use with Steel OEM Hub or (96410205001/2) replacement hub.
• Requires (99310605180/1) single belt conversion hub.
• We also recommend our (3609001604) billet fan pulley halves.

• Replacement for Porsche OE pulley No 96410205001.
• Requires (99310605180/1) single belt conversion hub.
• We also recommend our (3609001604) billet fan pulley halves.

Fits:
Porsche 911 - 1974 - 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998

911 used 2-Bolt type
964/993 uses 3-Bolt type

Please Note: 
The aluminium or plastic intake plenum(inlet manifold) is not included in the kit

Product Overview:

Inject power and precision into your vintage aircooled engine, now also for turbo or supercharged cars.

To be used when converting a G-Model 911 or a 964/993 engine to a turbocharged/supercharged engine with a 964 induction based Drive by Wire set-up

Conversion kit to a Porsche 964 based intake system to become a DBW (Drive by wire) intake based 74mm original Bosch throttle body (Sometimes referred to as 76mm) specifically executed all in CNC milled billet aluminum.

This is sold either with the intention to convert a Porsche 964/993 engine or to adapt and convert a 964 intake onto a G-model car when turbocharging (That sounds fun!).

Kit includes:

• Throttle body runner for 74mm throttle body in aluminum 
• Vacuum port on throttle body runner
• Original Bosch electronic throttle body
• Original Bosch MAP-T-sensor
• Connecting pipe out of aluminum replacing the resonance tube

Intake runners for the Porsche 911 G-model (2-bolt) or 964/993 (3-bolt) engine are made out of billet aluminium, 3D milled in a 5-axis machine. The port diameter indicated in the options is the diameter of the port in the cylinder head. 

The following parts are to be reused from your original 964 intake:
Rubber boots and clamps
The plenums (inlet manifolds)

Please Note:
Aluminium or plastic intake plenum is not included in the kit and neither are any of the items specifically listed as excluded above.

Fits:
Porsche 964 - 1989 to 1993
Porsche 993 - 1994 to 1998

Product Overview:

Inlet conversion kit consists of the throttle body runner and the resonance tube. This is what you need to convert a Porsche 996 GT3 MK1 or MK2 plenum to fit on a Porsche 964 engine. This kit is solid and made from a modified PA12 material making the original Porsche parts feel old and flimsy in comparison. 

Components Include: 

• Throttle body runner made out of a modified PA12 material and an industrial 3d moulding process
• Seal and original Porsche 997 GT3 Bosch 82mm electronic throttle body
• Vacuum tube with original resonance flap internals. Note the internals come from refurbished original 996 parts.
• Vacuum solenoid and reservoir with mounts as per images
• Rubber boots and clamps
• Vacuum connections, check valve and extra hose
• Original Bosch MAP-T-sensor for 1 bar

Fits:
Porsche 964 - 1989 to 1993
Porsche 993 - 1994 to 1998

Product Overview:
Transform your Porsche 964's performance with this sleek and high-tech intake kit designed for Porsche 964/993. This innovation marks a transition from the typical accelerator cable-based throttle to an electronic "drive by wire" throttle body. This advanced change streamlines the intake system by eliminating unnecessary components, resulting in a cleaner engine bay appearance. 

This modification offers a more drivable setup for highly tuned engines while incorporating the precision of a drive by wire (DBW) throttle.

This enhanced drivability is a key feature for a tuned aircooled engine and allows for smooth idle control with a cold as well as a hot engine. It simply makes the engine feel more modern as compared to the old ITB (individual throttle bodies) setups lacking in mid range torque and difficulties with the idle control.

Precision-Engineered Components:

• 82mm Throttle Body with Reinforced Industrial PA12 Manifold
• CNC-Milled Intake Manifold Stacks Crafted from Billet Aluminium
• Included Rubber Boots and Clamps for Easy Installation
• Islandworks Resonance Tube with Valve and Solenoid, Manufactured from the Same PA12 Material
• Integrated Manifold Pressure and Temperature Sensors
• Essential Vacuum Lines for Optimal Performance

Kit Includes
Complete intake with all the parts seen in the image manufactured from modified PA12 using an industrial process. This intake plenum has been optimized to fit on a Porsche 964 or Porsche 993 and includes all vacuum ports for both brake vacuum and to maneuver the resonance flap.

This kit is a modern update to the 964 (911) ignition system. This system takes the management of the car into the digital age and allows greater control over ignition and fueling.

The kit will replace your restrictive old fashioned air flow meter (barn door) with a modern MAP sensor managed by intake pressures.

The kit is delivered ready to use with a PPT ignition map. We have maps for 3.6 and 3.8 conversions, and either can be pre-installed for you.

Our latest kit now comes with an upgraded ECU and can run a wide band sensor (oxygen sensor).
Our kits include this capability but the sensor needs to be ordered separately.

While developing the upgraded ECU we also changed our intake pipe; this now works with the factory airbox, gives a stock appearance in the engine bay and houses the map sensor and air temp sensor out of sight.

Kit includes:
• Delta 700 ECU
• Direct plug in wiring loom
• Map Sensor and air temp sensor
• Air intake pipe
• 6 Bosch injectors
• Vacuum pipe and T connector
• Support and service by PIE Performance
• Can Bus data connection tool

All our kits are 100% reversible, with no need to drill or alter components, we utilise what already exists

Engine case hardware set, titanium. 

Air-cooled Porsche 911 complete engine case hardware kit in high-strength high-purity Titanium alloy. 

Includes studs:
For 911
Ti Alloy studs x 57
12 Point Ti Alloy Lock Nuts x 57

For 964/993
Ti Alloy studs x 62
12 Point Ti Alloy Lock Nuts x 62

Porsche Motorsports employed titanium alloy engine case fasteners on many of their famous race cars, including the 904, 908, 935, 962, and some modern LMP2.

Fits:
Porsche 911 3.0ltr / 3.3ltr
Porsche 964
Porsche 993

Engine case through bolt set, titanium. 

Kit Contents
Ti Alloy Studs x 11
Ti Alloy Washers x 22
Ti Alloy 12-point Nuts x 11

Porsche Motorsports employed titanium alloy engine case fasteners on many of their famous race cars, including the 904, 908, 935, 962, and some modern LMP2.

Fits:
Porsche 911
Porsche 964
Porsche 993

Air-cooled Porsche 911 engine case through bolts in high-strength high-purity Titanium alloy. Including studs, washers, and  nuts.

Fits:
Porsche 964/993/996/997

The Rennline Tune-able Engine Mount for the 964, 993, 996, and 997 offers the ultimate in adjust ability for your car. Replacing your compliant factory mounts will decrease engine movement resulting in better acceleration, handling and significantly increased shifter feel. This is the ultimate solution for almost any car, and allows you to tune our mounts for the way you drive. Our mounts are CNC machined from billet aluminium and include three pairs of inserts in varying densities. Tune your mounts by using the softer inserts to reduce engine slop and avoid missed shifts in your street car, or utilise the stiffest inserts to get the most from a more focused track car. You can even mix and match, giving you 9 possible combinations to let you dial in our mount to your specifications. Here at Rennline we know you want your Porsche to be flawless, and that is why we are Driven to Improve Excellence.

The Porsche 964 engine valve covers are made of CNC machined billet aluminum. The benefits of using CNC machined billet aluminum valve covers are that they are more durable and resistant to corrosion than the factory covers. They also have chamfered edges and tight gasket fitment which helps prevent oil leaks. The 964 valve covers replace fragile, leaking factory covers and accept reusable OEM gaskets. With a corrosion-resistant finish, chamfered edges and tight gasket fitment, these are simply one of the best valve covers on the market, delivering safety and optimization in your 911’s engine bay

The Porsche 964 engine valve covers are made of CNC machined billet aluminum. The benefits of using CNC machined billet aluminum valve covers are that they are more durable and resistant to corrosion than the factory covers. They also have chamfered edges and tight gasket fitment which helps prevent oil leaks. The 964 valve covers replace fragile, leaking factory covers and accept reusable OEM gaskets. With a corrosion-resistant finish, chamfered edges and tight gasket fitment, these are simply one of the best valve covers on the market, delivering safety and optimization in your 911’s engine bay

Porsche 964 Carrera 2 - 1989 to 1994
Porsche 964 Carrera 4 - 1989 to 1994
Porsche 964 RS - 1991 to 1993
Porsche 928 S4 / GTS - 07/1988 to 1994

Replaces Bosch 0280160297, and Porsche 92811019825 & 92811019804 & 92811019803 - 3.8 Bar (engine running, no vacuum line connected)

A direct replacement for the  OEM Bosch fuel pressure regulators used in many Porsche, Volvo, Mercedes and other makes.

Our fuel pressure regulator uses the latest Bosch regulators and by default is shipped with a 3.8bar regulator to be a direct replacement.  It is available in alternative pressures of 3.0, 3.5, and 4.0 Bar pressures. This simple and elegant design uses steel O-Ring boss sealing adapters to the manifold with multiple options for hose connections.

Easy to replace regulator with Bosch OEM reliability

3 outlet ports for flexible hose, fitting, gauge, sensor port options  

The Bosch regulator is rated to a maximum fuel flow of 200lpm.  

Kit Includes:

• Porsche 964 / late 928 OEM fitting kit
• Fuel pressure regulator body x 1
• Bosch Fuel pressure regulator x 1
• Option for adjustable fuel pressure regulator instead of fixed regulator
• Custom adapter fittings to fit to Porsche OEM hose ends x 3
• ORB Plug x 1

* Mounting bracket not included.  Fits to factory regulator bracket or our bracket if required for additional cost.

Our newly released fuel pressure regulator brackets mount to the Adapt Motorsport fuel pressure regulators to the engine breather cover bolts on top of the classic aircooled engines.  
The same as Porsche do for the 964.  

Manufactured from CNC machine aluminium and anodised in a dark silver colour, they really add a nice look to any classic Porsche engine bay.

Please Note
Only the regulator brackets and fasteners are included in the kit, the regulator is shown for reference purposes only and not included.  

We have a range of different regulators that can be ordered.

Our Valve Springs are designed and manufactured to specifically fit the envelope of a Porsche application not a spring from another use. 

It operates a higher natural frequency than the original spring for racing and at the very least minimizes damage from over rev in track day situations. 

Please note
993 - must use 8mm Ti retainers and Aasco Seats

9mm Porsche 911 titanium valve spring retainers for 9mm valves. 

Can be used to directly replace OE retainers but we recommend using in conjunction with Aasco HP109  valve springs and HPSS spring seats.

Set of 12