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Porsche > 964 (911) (1989-1994) > Engine Rebuild Parts > PMO Carburetors >

PMO Induction carburettor tune up kit. Porsche 911  ❭  PM-O85

PMO Induction carburettor tune up kit. Porsche 911
2
Related to PMO Carburetors for 964 (911) (1989-1994)
PM-O85
Product Information
Product Information
PMO Induction carburettor tune up kit.
Please see the  PMO vs OE Carb Overview

pmo

Fits
PMO Induction 40mm / 46mm / 50mm Carburettors

Kit Includes
Main Jets, Idle Jets, Emulsion Tubes, Air Correctors

Kit Details

40mm Kit
125, 135, 145 main jets
60, 65 idle jets
F3 emulsion tubes
145 air correctors

46mm Kit
150, 155, 160 main jets
F3 emulsion tubes
175 air correctors

50mm Kit
165, 175, 190 main jets
F3 emulsion tubes
185 air correctors

Tuning guidelines for choke and carb sizing per Weber
Venturi size Formula (mm) 20√V/1000*N/1000
V = Cylinder volume for one cylinder of engine in CCs
N = Peak engine power RPM Carb bore to venturi size recommendation is (10-25% larger than calculated venturi size)*
*The larger the ratio to higher the engine tune and peak power output
Related products
PMO Induction 50mm carburettor kit for road use. Porsche 911 3.5ltr through to 3.8ltr engine capacity - PM-O807-0
1
PMO Induction 50mm carburettor kit for road use. Porsche 911 3.5ltr through to 3.8ltr engine capacity
PM-O807-0
Product Information
Product Information
PMO Induction 50mm Carburettor Kit for Road Use

Replacing worn or faulty Weber carburettors or looking for increased performance? Choose PMO Induction carburetors

 Weber carburettors are a good product, but they were designed for mass production. PMO Induction carburetors are highly engineered and designed to exacting standards tht are not feasible in typical mass production.

This is why we feel that PMO Induction carburetors are a superior product.
Please see the  PMO vs OE Carb Overview

pmo

Fits
Porsche 911 - Air cooled engine with a capacity of 3.5ltr through to 3.8ltr

Kit Includes
Carburettors, linkage and fuel regulator

PMO Induction utilises aerospace quality castings, machining tolerances, IDF jetting and float technology that is based on Weber's most modern carburettor design.

The original 46mm Weber carburettors simply have the throttle plate enlarged, whereas PMO’s have the
entire throttle body enlarged from the top throat through the plate meaning the air flow capabilities of
PMO Induction’s carburettors are significantly improved over the equivalent size Weber.

PMO Induction use a one-piece, machined stainless steel throttle shaft, supported by large ball
bearings for a lifetime of smooth throttle action negating the Weber carburettors biggest problem as
Weber carbs suffered greatly with throttle shaft wear, air leaks, and binding over the years. Weber throttles also suffer from heat soak
that exacerbate the wear issues but this does not affect PMO Induction carburettors.

The PMO Induction carburettors have a sight glass float bowl to allow for accurate setting of fuel levels,
much more simple and efficient than the Weber IDA method that requires partial a carburettor disassembly.
The fuel inlet system is also greatly improved to provide significantly improved flow capacity and fuel delivery balance against
the banjo set-up on the Weber carbs, which are highly prone to leak and are capacity limited on high flow applications.

In addition, Weber never made a 50mm carburettor for large displacement or racing applications.

Specification:
Carburettor Size - 50mm
Choke - 41
Mains - 175
Air Corrector - 190
Em Tubes - F2t
Idle Jets - 60
Float Check Valve - 0.5

Please Note
* The engine cc range in the listings is an approximation based on typical displacement requirements utilising standard (stock) ported cylinder heads and factory style cams.
Any carb sets / manifolds should always be matched to the head port size for the standard (stock) engines.
 
**Engines with enlarged ports, higher compression ratios, race camshafts, will require additional components for tuning beyond the standard kit
specifications
PMO Induction air cleaner and water shield kit. Porsche 911 with PMO Induction carburettors - PM-O310-0, PM-O312-0
2
PMO Induction air cleaner and water shield kit. Porsche 911 with PMO Induction carburettors
PM-O31
Product Information
Product Information
PMO Induction air cleaner and water shield kit

pmo

Fits
Porsche 911 - Air cooled engine with PMO Induction Carburettors

Kit Includes
Air Cleaner Element - x 2
Water Shield Top x 2
Air Cleaner Base x 2
Air Cleaner Top x 2
Air Cleaner Hardware Kit

Please Note
Cars without air conditioning have standard height air filters
Cars with air conditioning have shorter height air filters

Please see the  PMO vs OE Carb Overview
PMO Induction air cleaner and water shield kit. Porsche 911 with Weber carburettors - PM-O314-0, PM-O316-0
2
PMO Induction air cleaner and water shield kit. Porsche 911 with Weber carburettors
PM-O31
Product Information
Product Information
PMO Induction air cleaner and water shield kit

pmo

Fits
Porsche 911 - Air cooled engine with Weber Carburettors

Kit Includes
Air Cleaner Element - x 2
Water Shield Top x 2
Air Cleaner Base x 2
Air Cleaner Top x 2
Air Cleaner Hardware Kit

Please Note
Cars without air conditioning have standard height air filters
Cars with air conditioning have shorter height air filters

Please see the  PMO vs OE Carb Overview