Heat Exchangers

Heat exchanger sets, Stainless Steel. Porsche 911 3.2ltr Conversion SSI

Are you backdating a 3.2 Carrera or 3.2ltr engine?
Use these SSi heat exchangers to solve the exhaust requirements by deleting the pre-silencer and turning the rear silencer into a "two in, one out" system seen on the early, pre impact bumper cars.

Price is for a SET OF 2

Fits:
Porsche 911 3.2L Conversion SSI
*Oil pipes 91110772910 and 91110773910 are also required also see our exhaust packages

Modification is needed on the engine tinware when installing on 3.2ltr engines.

LONG LIFE
Made using AISI 321/EN4531 titanium stabilized stainless steel  the expected life in the severest road conditions (salt) is 20-30 years.

HIGHER POWER OUTPUT
Output is increased particularly in the low and middle RPM ranges. The design makes power by minimizing intake charge disturbances at valve overlap, and increasing the exhaust gas extraction effect. The volumetric efficiency, and thereby the power output is increased. The SSI headers are significantly improved versions of the basic header design used by Porsche on all normally aspirated six cylinder competition engines.

CARBON MONOXIDE SAFE
Unlike all other aftermarket heat exchangers, the SSI heat exchanger headers are made to minimize the possibility that engine produced acids will internally corrode the enclosed primary tubes, thereby allowing carbon monoxide to enter the passenger compartment. The AISI 304 stainless steel tubing is highly resistant to the byproducts of combustion. SSI use only one piece primary tubes, eliminating the possibility of hand-made welds cracking, and the resulting carbon monoxide leaks.

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91133091917SSI

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Heat Exchanger Stainless Steel Porsche 911 3.2L (for SSI "style" Conversion). Price is Each



Fits:
Porsche 911 3.2L Conversion SSI STYLE
*Oil pipes 91110772910 and 91110773910 are also required also see our exhaust packages
Special performance: Can replace 91133091104S heaters, but stock exhaust must be changed to two inlet pipe system Polished Stainless steel.

HIGHER POWER OUTPUT
Output is increased particularly in the low and middle RPM ranges. The design makes power by minimizing intake charge disturbances at valve overlap, and increasing the exhaust gas extraction effect. The volumetric efficiency, and thereby the power output is increased.

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9113309101

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Heater flap box, long version.
Stainless steel. Left or Right - Please select below.
G50 cars only

Fits:
Porsche 911 1987-89 3.2L
Porsche 930 TURBO 1987-89 3.3L

Please note the flaps don't come with holes to accommodate caloric sensor. You may need to drill the holes for the rivets.

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91121101

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Mounting kit for heat exchanger.



Fits:
Porsche 911 Carrera 3.2L 08/1983-07/1989
Porsche 911 Turbo (930 Turbo) 3.3L 08/1983-07/1989

Kit included:
1x Large gasket for mounting heat exchanger to intermediate tube
3x Gasket for heat exchanger to cylinder head. 3 pcs. required for each heat exchanger
3x Bolt, M8x1.25x40mm
3x Nut M8x1.25, for mounting heat exchanger to cylinder head
3x Lock nut, M8x1.25, cu. Plated
3x Nut, M8x1.25

Rubber sleeve heat exchanger.  Connects heat exchangers to heating air pipe tube.
Sold each - 2 required per car.

Fits:

Porsche 911 3.2 Carrera - 1984 to 1989

Diagram ref no 22

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93021133904

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Rubber Sleeve Heat Exchanger.  Connects Heat Exchangers To Heating Air Pipe Tube.
Sold Each, x2 Required Per Car.

Fits:

Porsche 911 3.2L Carrera 1984>>1989

Diagram Ref No 22

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93021133904

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Sports exhaust conversion kit without catalytic converters. 

Fits:
Porsche 911 3.2 Carrera - 1984 to 1989

Material: AISI304 Stainless Steel
Number of Inlets / Outlets: 2/2

Upgrade your 3.2-litre Carrera engine with our high-performance free-flow exhaust system. Designed to deliver a significant boost in horsepower, this system features Ø41mm OD pipework and a Ø60mm inflow for optimal power output. Engineered for precision, it integrates seamlessly with standard G-model tinware, eliminating the need for additional replacements.

Equipped with O2 sensors on both sides and twin Ø70mm tailpipes, the system not only enhances engine performance but also delivers a richer, more dynamic exhaust note.

Constructed entirely from robust AISI304 stainless steel, this system is built for durability and long-lasting performance. Its precision design ensures perfect compatibility and hassle-free installation, making it the ideal choice for enthusiasts seeking to elevate their engine's capabilities without major modifications.

• Instant Performance Gains: A noticeable boost without complicated installs.
• Amazing Sound: This system doesn't just improve performance—it delivers an aggressive, powerful sound.

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1620802710

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Sports exhaust set with two 84mm tailpipes - Polished stainless steel.

Fits:
Porsche 911 3.2 Carrera - 1984 to 1989

Sports Exhaust package with two Ø84 mm tail pipes, heat exchangers and oil pipe set for the 911 3.2 Carrera.

OEM style with no modifications of engine tinware needed for installation. 

Made of polished stainless steel

Material: Polished Stainless Steel
Number of Inlets / Outlets: 2/2
Surface: Blank

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1620803010

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Sports exhaust set without catalytic converter 2 in 1 out - 70mm diameter tailpipe



Fits:
Porsche 911 3.2ltr - 1984 to 1989

Material: Stainless Steel
Number of Inlets / Outlets: 2/1

Conversion of a performance optimised 3.2ltr Carrera engine into a free-flow system.
This system is specifically engineered to generate increased HP from an enhanced engine by using Ø41mm OD pipework in combination with Ø60mm inflow to the exhaust.

No need to replace the engine tinware as system design allows to fit with standard G-model tinware.
O2 sensor on both left and right side and all made in AISI304 stainless steel. 

Tail pipe outlet Ø70mm for optimizing the sound outlet from the system.

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1620802610

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Sports exhaust conversion set with catalytic converters, with one 70mm tail pipe.



Fits:
Porsche 911 3.2ltr 08/1983-07/1989

Material: AISI304 Stainless Steel
Number of Inlets / Outlets: 2/1

Conversion of a performance optimized 3.2 Carrera engine into a free-flow system. This system is specifically engineered to generate increased HP from an enhanced engine by using Ø41mm OD pipework in combination with Ø60mm inflow to the exhaust. O2 sensor (Lambda) fitted to both left and right side.

Made from AISI304 stainless steel, there is no need to replace or modify the engine tinware as system design allows to fit with standard G-model tinware.
The tail pipe outlet is Ø70mm for optimising the exhaust sound from this system.

• Instant Performance Gains: A noticeable boost without complicated installs.
• Amazing Sound: This system doesn't just improve performance—it delivers an aggressive, powerful sound.

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1620802310

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Sports exhaust conversion set with catalytic converters, with two 70mm tail pipes.



Fits:
Porsche 911 3.2ltr 08/1983-07/1989

Material: AISI304 Stainless Steel
Number of Inlets / Outlets: 2/2

Conversion of a performance optimized 3.2 Carrera engine into a free-flow system. This system is specifically engineered to generate increased HP from an enhanced engine by using Ø41mm OD pipework in combination with Ø60mm inflow to the exhaust. O2 sensor (Lambda) fitted to both left and right side.

Made from AISI304 stainless steel, there is no need to replace or modify the engine tinware as system design allows to fit with standard G-model tinware.
Tail pipe outlet is Ø70mm for optimizing the sound from this system.

• Instant Performance Gains: A noticeable boost without complicated installs.
• Amazing Sound: This system doesn't just improve performance—it delivers an aggressive, powerful sound.

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1620802810

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Set of 2 stainless steel heat exchangers for Porsche 911 (1965-1989) chassis fitted with the M64 3.6L engine from Porsche 964 and 993 models. This setup eliminates the side and center silencers, converting the rear silencer into a "two in, one out" system, reminiscent of early pre-impact bumper cars.

Fits:
Porsche 911 Chassis 1965-89 Fitted With M64 964/993 3.6L Engine

LONG LIFE

Made from AISI 321/EN4531 titanium-stabilised stainless steel, these heat exchangers are built for durability, with an expected lifespan of 20-30 years in high-salt environments and even longer in milder conditions.

HIGHER POWER OUTPUT
Designed to optimise exhaust flow, these headers improve power output, particularly in low and mid-RPM ranges, by reducing intake charge disturbances at valve overlap and enhancing exhaust gas extraction. SSI headers are a refined version of Porsche’s competition-proven six-cylinder header design.

CARBON MONOXIDE SAFE
Unlike other aftermarket options, SSI heat exchangers are engineered to prevent internal corrosion from engine acids, reducing the risk of carbon monoxide leaks. Constructed from high-quality AISI 304 stainless steel with seamless primary tubes, they eliminate weak weld points that could lead to cracks and leaks.


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91133091936SSI

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High performance stud + nut kits for the exhaust manifold to cylinder head for Porsche. Using titanium and Inconel alloy studs, aerospace lock nuts, and a well-thought and balanced combination of metals and plating/coatings, our fasteners will perform better than the traditional fastener. They will never oxidize, and hence will unscrew easily when required.



Novel ultra-high-performance product
• Use of Titanium Ti6Al4V technology
• Extreme perceived quality

Contains 12 x Studs, Nuts & Washers

Fits:
Porsche 911 3.0L SC
Porsche 911 3.2L 1984-89
Porsche 930 turbo
Porsche 965 turbo

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SL-TI-122

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