PMO Induction Porsche 911 Carb Sets

PMO Induction’s carburetors meet the needs of today’s street and performance engines.

• First, pick your choice of 8 uniquely designed PMO carburetor sets, ranging from 40-50 mm to fit 2.0 to 3.6 L engines. Each of these custom PMO carburetor sets provide improved drivability and performance versus the original Porsche Zentih or Weber carburetors.
• Secondly, match up your PMO Induction carburetor set to one of 16 custom manifold sets. Remember for correct manifold selection, first determine the base engine’s year and displacement. The original fuel system on the engine type dictates the manifold port shape, and then it is a matter of matching the port size and carb size desired.
• Lastly, pick your option of air cleaner sets- standard, short (for vehicles with air conditioning), or custom ITG racing set-up.

PMO Induction also has Carburetor Rebuild Kits for our 40mm,46mm and 50mm carb sets. These sets include: gaskets, o-rings, needle valves, float shims, washers and an accelerator pump cam to keep your PMO’s running at top performance. Should you want to custom tune your PMO Induction Carb Set, PMO offers Tune-Up Kits with optional main & idle jets, emulsion tubes and air correctors. Individual components such as; venturis, crossbars, linkage kits, fuel regulators, pressure control units, jets, air filters and much more are available for your specific PMO Induction set-up needs.

PMO Carburetor Features and Benefits

1. Completely enlarged throttle bodysize significantly improves airflow capacity vs original which only offered an enlarged 46mm throttle plate, no OE 50mm version was offered.
2. Re-designed fuel inlet system allows for higher and more balanced flow rate with leak free delivery vs OE banjo bolt set-up.
3. Aerospace quality materials and casting technology utilized throughout. Venturis, velocity stacks and throttle plates are precision machined to extremely tight tolerances for maximum flow and more exact tuning.
4. One-piece stainless steel throttle shafts machined and micro-polished to .002” tolerance for a lifetime of smooth throttle action. EDM cut slots deliver precise butterfly fitment and alignment for improved throttle response. Oversize ball bearings support throttle shafts to eliminate binding and air leaks that diminished performance of the OE Carburetors.
5. Designed to accept commercially available IDF floats and jets for maximum tunability and performance.
6. Gaskets, diaphragms and seals are E85 compatible.
7. Integrated fuel sight glass for safer, more efficient level setting. No disassembly or special tools required to fine tune for supreme performance.
8. Improved transition port design for superior off-idle performance.
9. CNC machined intake manifold runner dimensions are highly accurate, offering improved flow characteristics and tunability versus OE castings.

PMO Induction vs Weber Carburetors

PMO Induction utilizes aerospace quality castings, machining tolerances, and IDF jetting and float technology. This change was predicated on the IDF series, Weber’s most modern carb design, and intended to cope with high performance tires and suspensions that cause fuel slosh and starvation issues with older carb designs, like the original IDA configuration. Replacement and tuning component parts availability and costs are significantly better in general for IDF components over the IDA series parts.

Original 46mm Weber carburetors simply have the throttle plate enlarged, where as PMO’s have the entire throttle body enlarged from the top throat through the plate. Meaning the air flow capabilities of PMO Induction’s carburetors are significantly improved over the equivalent size Weber. In addition, Weber never made a 50mm carb for large displacement or racing applications – PMO Induction does!

PMO Induction utilizes a one-piece, machined stainless steel throttle shaft, supported by large ball bearings for a lifetime of smooth throttle action. This is the single biggest issue with Weber carburetors. The Weber carbs suffered greatly with throttle shaft wear, air leaks, and binding over the years with increasingly degrading throttle plate action and performance. Weber throttles also suffer from heat soak that exacerbate the wear issues, this does not affect PMO Induction carburetors.

PMO Induction carburetors have a sight glass float bowl to allow for very accurate setting of fuel levels, much more simply and efficiently, over the Weber IDA method that requires partial carb disassembly.

PMO Induction carburetors feature a greatly improved fuel inlet system configuration. This provides significantly improved flow capacity and fuel delivery balance vs. the banjo set-up on the Weber carbs, which are highly prone to leakage and are capacity limited on high flow applications.

Several internal PMO Induction carburetor components are manufactured to extremely tight tolerances such as chokes, throttle plates, and velocity stacks that not only deliver improved performance but ensure very even fuel and air metering between each stack making tuning much easier.

The PMO Induction manifold runners are CNC machined vs cast manifold runners; thus, are highly consistent and accurate with all the above-mentioned performance and tuning benefits.

Simply stated all the known historical Weber issues were recognized and addressed when the PMO Induction carburetors were designed and manufactured.

PMO Intake Manifolds

PMO intake manifold sets are engineered and custom made for your classic Porsche from the highest quality materials and are custom finished in-house in raw aluminum finish or custom “R” black powdercoat finish. PMO intake manifold sets are the industry standard for quality and performance. PMO intake manifolds fits PMO or Weber Carburetors.

For manifold selection first determine the base engine’s year and displacement. The original fuel system on the engine type dictates the manifold port shape and then it is a matter of matching the port size and carb size desired.

All PMO intake manifold sets include intake manifolds, gaskets, and hardware.

Please call for pricing and availability on Rennsport “R” Finish Intake Manifold Sets

---