Notice: due to impending retirement, Performance Oriented will no longer accept new projects.  We plan to resume service in the future but the when is unknown, probably late 2019.  Thank you for the opportunity to service your weber/Zenith/Solex/MFI projects!

Services for Weber 40IDA3C & 46IDA3C Carburetors

Performance Oriented reconditions Weber 40IDA3C carburetors to a quality above any other service provider.  As a one man shop you are assured all tasks associated with your Weber service are personally attended to by I, Paul Abbott.

Scheduling notice:

Please review Notice regarding scheduling of new projects.

Service Offerings:

$1175 Rebuild & Tune

The Rebuild & Tune service is a good way to have your Webers rebuilt and adjusted so you may be assured they are in good operational condition and harbor no hidden issues.  The rebuild procedure also provides the opportunity to assess your Weber's condition and to perform subtle adjustments that will tailor them to work better for your application.  Jetting is assessed with regards to your engine particulars and your driving application.  Also, if you are using IDTP Webers on a non-OEM engine then this offers the ability to affect  some minor adjustments to help with transition drive-ability issues assuming the  engine isn't too heavily modified.

  • Rebuilds & tunes one pair of carburetors returning them ready to run
  • Details of work performed
    • complete disassembly of carburetors & ultrasonic cleaning of all components
    • idle circuit fuel delivery galleries opened, cleaned & re-plugged
    • fuel floats blue-printed and leak checked
    • assembly hardware kit including new float needle valves
    • on-engine tuning including adjustments of:
      • idle air correction screws
      • idle mixture screws
      • throttle stop screws
      • fuel float needle valves shimmed
      • all fuel interfaces checked for leakage
      • accelerator pumps adjusted for output
  • See photo to identify what items to send to Performance Oriented for Rebuild & Tune service

NOTE: This service assumes carburetors are in good running condition and do not require mechanical refurbishment such as throttle shaft bearing replacement.

$1475 Level 1: Throttle Housings Only

The Level 1 service is for those wanting the essential mechanical refurbishment of the throttle shaft bearings rectify slow speed running issues.  This is our most economical service offering  and is provided for those wanting to perform disassembly, assembly & tuning themselves.  

  • Remanufactures one pair of throttle housings returning them ready for final assembly
  • Details of work performed
    • complete disassembly of throttle housings & ultrasonic cleaning of all components
    • throttle bores honed, two bronze throttle shaft bearings installed per housing and new, OEM diameter throttle valves installed
    • adjust end-float of both throttle shafts in each throttle housing
    • bungs for main jet holders & float bowl drain bolts are refreshed by machining
    • throttle housing bottom flanges  are re-surfaced for flatness
    • OEM finishes are restored on throttle shaft components and adjusting screws
    • OEM style, riveted 8mm ball studs installed on throttle lever arms
    • idle circuit fuel delivery galleries opened, cleaned & re-plugged
    • new accelerator pump rods and lever arms (lever arms installed on throttle shafts) supplied as required
    • throttle housings are bench tested for throttle valve flow parity at idling position
  • See photo to identify what items to send to Performance Oriented for Level 1 service
 A pair of "Level 1: Throttle Housing Only" after service is completed.  Note what items are shown in the image to know what items to send for this service.  Also note the restored finishes on the adjusting screws and levers as well as the machined bungs for the main jet holders and float bowl drain bolts.

A pair of "Level 1: Throttle Housing Only" after service is completed.  Note what items are shown in the image to know what items to send for this service.  Also note the restored finishes on the adjusting screws and levers as well as the machined bungs for the main jet holders and float bowl drain bolts.

 

 

$1875 Level 1: Throttle Housings Only; Optional Upgrade

This upgrade to the Level 1 service results in perfect bore and throttle valve fitment and the six journal bearings provide optimum fit and support of your throttle shafts.  After 40 years of service life, throttle housings display bore distortion which is corrected by the over-size boring effort and although two replacement shaft bearings are typically adequate for good carburetor service, the replacement of all six OEM journal bearings assures optimum shaft support.  This exclusive service provided only by Performance Oriented rectifies these age related issues and underscores our commitment to exceptional service standards.

  • Remanufactures one pair of throttle housings returning them ready for final assembly
  • Mechanical service upgrade from the "Level 1: Throttle Housings Only" service
  • Details of additional work performed
    • six throttle shaft bearings are installed into each throttle housing using oil-impregnated bronze bushings
    • throttle bores machined 0.010" oversize to remove age and wear related distortions
    • new hand-fitted throttle valves machined to match the throttle bores
  • See photo to identify what items to send to Performance Oriented for Level 1 service

$2775 Level 2: Complete Carburetor Re-manufacturing

Continuing from and combining the "Rebuild & Tune" service with the "Throttle Housing Only" services results in a comprehensive refurbishment of all components of your Webers.  This is our "Level 2: Complete Carburetor Re-Manufacturing" service and returns your carburetors "ready to run" and equal in function to new Webers.  

  • Re-manufactures one pair of carburetors returning them ready to run
  • Combines "Rebuild & Tune" service with "Level 1: Throttle Housings Only" service
  • Details of additional work performed
    • brass components de-burred, bead blasted & buffed
    • vent pipes in top covers removed, re-plated and reinstalled
    • bungs for hex caps over float needle valves are refreshed by machining
    • top covers modified to control float bowl percolation
    • accelerator pump bodies & top covers are blueprinted 
  • See photo to identify what items to send to Performance Oriented for Level 2 service

 

 A pair of "Level 2: Complete Carburetor Re-Manufacturing" after service is completed.  Note what items are shown in the image to know what items to send for this service.  This set is from a 1969 911T.

A pair of "Level 2: Complete Carburetor Re-Manufacturing" after service is completed.  Note what items are shown in the image to know what items to send for this service.  This set is from a 1969 911T.

 

$3175 Level 2: Complete Carburetor Re-manufacturing; Optional Upgrade

This upgrade to the Level 2 service results in perfect bore and throttle valve fitment and the six journal bearings provide optimum fit and support of your throttle shafts.  After 40 years of service life, throttle housings display bore distortion which is corrected by the over-size boring effort and although two replacement shaft bearings are typically adequate for good carburetor service, the replacement of all six OEM journal bearings assures optimum shaft support.  This exclusive service provided only by Performance Oriented rectifies these age related issues and underscores our commitment to exceptional service standards.

  • Re-manufactures one pair of carburetors returning them ready to run
  • Mechanical service upgrade from the "Level 2: Complete Carburetor Re-Manufacturing" service
  • Details of additional work performed
    • six throttle shaft bearings are installed into each throttle housing using oil-impregnated bronze bushings
    • throttle bores machined 0.010" oversize to remove age and wear related distortions
    • new hand-fitted throttle valves machined to match the throttle bores
  • See photo to identify what items to send to Performance Oriented for Level 2 service

$3475 Level 3: Complete Carburetor Restoration

The "Level 3: Complete Carburetor Restoration" service continues from "Level 2: Complete Carburetor Re-Manufacturing" service resulting in your Webers being restored both mechanically and cosmetically to OEM specifications.  All components are removed, inspected and replaced or restored.

  • Restores one pair of carburetors returning them ready to run; both mechanically and cosmetically equal to OEM specifications 
  • Continues from the work performed by  "Level 2: Complete Carburetor Re-Manufacturing" service
  • Details of additional work performed
    • throttle housings and top covers vapor-blasted (studs and fuel galleries protected from effects of blasting)
    • period correct, OEM finishes restored on all components
  • See photo to identify what items to send to Performance Oriented for Level 3 service

 

 A pair of "Level 3: Complete Carburetor Restoration" after service is completed.  Note what items are shown in the image to know what items to send for this service.  This set is from a 1968 911S.

A pair of "Level 3: Complete Carburetor Restoration" after service is completed.  Note what items are shown in the image to know what items to send for this service.  This set is from a 1968 911S.

 

$4175 Level 3: Complete Carburetor Restoration; Optional Upgrade

This upgrade to the Level 3 service results in perfect bore and throttle valve fitment and the six journal bearings provide optimum fit and support of your throttle shafts.  After 40 years of service life, throttle housings display bore distortion which is corrected by the over-size boring effort and although two replacement shaft bearings are typically adequate for good carburetor service, the replacement of all six OEM journal bearings assures optimum shaft support.  This exclusive service provided only by Performance Oriented rectifies these age related issues and underscores our commitment to exceptional service standards.

  • Restores one pair of carburetors returning them ready to run; both mechanically and cosmetically equal to OEM specifications 
  • Mechanical service upgrade from the "Level 3: Complete Carburetor Restoration" service
  • Details of additional work performed
    • six throttle shaft bearings are installed into each throttle housing using oil-impregnated bronze bushings
    • throttle bores machined 0.010" oversize to remove age and wear related distortions
    • new hand-fitted throttle valves machined to match the throttle bores
    • carburetors are completely disassembled including removal of all lead plugs and studs
    • tops and bottoms of throttle housings and top covers machined for flatness and sealing efficiency
    • all machined surfaces are de-burred prior to application of finishes
    • throttle housings and top covers vapor-blasted
    • all threaded ports refreshed by re-tapping
    • all fuel delivery galleries are opened, reamed to refresh the passageways and re-plugged
    • period correct, OEM finishes restored on all components
    • period correct, nickel plating used on accelerator pump linkages (1966 through 1968 year models)
    • machined brass components re-machined to restore OEM texture
  • See photo to identify what items to send to Performance Oriented for Level 3 service

Notes:

  • Customer to supply:
    • Carburetors as depicted in the photos for each level of service.
  • Customer to retain:
    • Air cleaners and associated components
    • Intake air horns (unless restoration is requested)
    • Intake manifolds (unless restoration is requested)
    • Throttle linkages (unless restoration is requested)
  • Please review Standard Shipping Guidelines provided on the SHIPPING web page.
  • Customer is responsible for performing final adjustments to tailor the tuning of their carburetors to their engine.
  • We strongly recommend upgrading throttle bodies using the early style shaft couplings to the later style, cylindrical couplings @ $110 for two throttle bodies.  Reuse of the earlier style couplings may result in rotational slippage between the throttle plates: Performance Oriented does not provide warranty repair for this issue.
  • Please visit Standard Service Options below for additional carburetor services offered by Performance Oriented.
  • It is assumed the supplied carburetors are serviceable units removed from a running engine. Units with missing components, seized throttle shafts, broken jet holders or that are corroded and/or dirty may result in adders in the cost estimate in order to return them to service.

 

Standard Service Options

The following are optional standard services available for Weber carburetor projects.  Please visit Weber Performance for additional service options.

 

Restoration of OEM intake manifolds @ $350

Restored intake manifolds

The OEM intake manifolds are made of die cast magnesium (except for the very earliest version which were sand cast of magnesium) and were delivered without a protective coating until 1970 when they were painted with a very tough polyurethane finish.  Magnesium is particularly reactive to the combustion gasses in the intake tract resulting in pitting due to corrosion.  In addition to corrosion issues these manifolds are routinely distorted due to the pressure applied to their flanges during torquing of installation fasteners.

Performance Oriented corrects these issues during the refinishing process, which includes:

  • Removal of all studs and bell crank mounting shaft
  • Top and bottom surfaces fly-cut to re-establish flat interfaces
  • Interior walls smoothed of pitting defects due to corrosion
  • Exterior finish blasted clean and black (or grey as requested) magnesium chromate finish applied
  • Exterior surfaces coated with protective, oil-based penetrant and corrosion inhibitor
  • Refinished studs and bell crank shaft re-installed

NOTE:  Add $100 if supplied manifolds are painted or powder coated.

 

Refinish intake air horns (Pricing below)

The intake air horns varied in type over the years of production of the Porsche 911 and 914/6 cars.  The earliest horns were spun from one piece of flat material and then finished with nickel plating.  Later horns were spun from a thinner material and were zinc plated with a yellow chromate finish.  Finally, beginning in 1968 injection-molded air horns were adopted for use and were either grey or black.

Performance Oriented offers restoration of the two types of metal horns:

  • Zinc plated steel air horns @ $85
  • Nickel plated air horns @ $195

Restoration of throttle linkage Set @ $225

  • Throttle cross bar straightened/de-burred/blueprinted for geometry and new 8mm ball studs installed followed by finish restoration
  • Drop links and long link straightened/de-burred and threads "chased"; ball sockets de-burred and threads "chased" followed by finish restoration
  • Link from transmission to bell crank straightened/de-burred and threads "chased"; ball socket de-burred and threads "chased" followed by finish restoration
  • Bell cranks (both transmission and intake manifold bell cranks) straightened/de-burred and new 8mm ball studs installed followed by finish restoration and supplied with new bronze bearings
  • Side mounting brackets straightened/de-burred followed by finish restoration

 

 Throttle Linkage Set after restoration.

Throttle Linkage Set after restoration.

 

Additional Services

Webers sometimes have issues such as: broken housings, seized jet holders, broken studs, blocked fuel galleries or stripped threads. Performance Oriented routinely repairs these problems so don't scrap your carbs without first checking with us. 

Click on the image below and scroll through some typical repairs.