Services for Weber 40IDA3C & 46IDA3C Carburetors
We are committed to excellence in our services. Demonstrative of this commitment are:
Six throttle shaft journal bearings are installed into each throttle housing thereby ensuring optimum shaft support and minimizing uncontrolled air being drawn into the throttle bores during slow speed operation.
Fuel galleries supplying the idle and progression circuits are opened and re-sized to remove internal corrosion, a typical problem for slow speed running in these carburetors.
On-engine tuning and pre-adjustment minimizes initial start-up running issues.
Complete Carburetor Re-manufacturing: $3175
The "Complete Carburetor Re-Manufacturing" service returns your carburetors "ready to run" and equal in function to new Webers.
Details of work performed
Re-manufactures one pair of carburetors returning them ready to run
Complete disassembly of carburetors & ultrasonic cleaning of all components
Housings cleaned by:
Dip tank soaking
Six, high-capacity, steel-infused, self-lubricating, sintered-bronze, self-lubricating throttle shaft bearings installed per housing
Throttle bores honed to refresh sealing surfaces
Six new, OEM diameter throttle valves installed
End-float of both throttle shafts in each throttle housing adjusted
Throttle housing bottom flanges are re-surfaced by milling for flatness
Bung holes for main jet holders & float bowl drain bolts are refreshed by machining
Bung holes for hex caps over float needle valves are refreshed by machining
OEM finishes are restored on throttle shafts and all removable steel components
Main venturis, booster venturis and accelerator pump bodies are vapor-blasted, buffed and blueprinted
OEM style, riveted 8mm ball studs installed on throttle lever arms
Brass components are de-burred, vapor-blasted, polished and re-machined for OEM appearance
Fuel floats are blue-printed for geometry and leak checked
“Hidden” fuel galleries supplying idle jets are opened, cleaned & re-plugged
Vent pipes in top covers removed, re-plated and reinstalled
Top covers modified to control float bowl percolation utilizing Performance Oriented developed methodology
New accelerator pump rods and lever arms (lever arms installed on throttle shafts) supplied as required
Accelerator pump bodies & top covers
blueprinted for geometry
re-surfaced for flatness
vapor-blasted and buffed
Throttle housings are bench tested for throttle valve flow parity at idling position
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
Jetting is assessed with regards to your engine particulars and for your driving application.
If you are using IDTP Webers on a non-OEM specification engine then Performance Oriented will provide counsel regarding modifications to mitigate transition drive-ability issues.
See photo to identify what items to send to Performance Oriented for Complete Carburetor Re-manufacturing service
We are currently scheduling projects for January 2020. To secure a service date please send an email to info@PerformanceOriented.com after which you will receive your Customer Service Number. Approximately two weeks prior to your service date Performance Oriented will contact you so you may ship your Webers.
Customer to supply:
Carburetors as depicted in the photo above.
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)
Customer is responsible for performing final adjustments to tailor the tuning of their carburetors to their engine.
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.
Packaging and Shipping:
Recommended packaging procedure:
Place each carburetor int its own box with appropriate packing material.
Tape these two boxes to be as one larger box.
Place this assembly of tow boxes into a larger box with appropriate packing material.
Have Performance Oriented sign for the shipment at time of delivery.
Performance Oriented prefers FedEx as the shipper.
Contact Performance Oriented via email info@PerformanceOriented.com prior to shipping to assure we are ready to receive it.
Address (This is a residential address.):
1040 Luradel Ave S
Salem, Oregon 97302
Attn: Paul Abbott
Standard Service Options
The following are optional standard services available for Weber carburetor projects.
Throttle Housing Restoration Services
Machine throttle bores @ $250
Throttle bores machined 0.010" oversize to remove age and wear related distortions
New, hand-fitted throttle valves machined to match the throttle bores
Dry bead blast exteriors of throttle housings @ $225
Cleans up stained exteriors of throttle housings to look as new
Throttle housings are assembled and sealed from intrusion of blast media
Studs are protected from blast media
Ultra fine glass bead media used to avoid damaging surfaces
Dry bead blast entire throttle housings @ $425
Cleans up stained exteriors and interiors of throttle housings to look as new
Carburetors are completely disassembled including removal of all lead plugs and studs
Studs are removed and finishes are restored
All fuel delivery galleries for idle and progression circuits are opened, reamed to refresh the passageways and re-plugged
Tops of throttle housings and top covers surfaced for flatness and sealing efficiency
Note: Bottoms are milled flat during Complete Carburetor Re-manufacturing service
All re-machined surfaces are de-burred
All threaded features refreshed by re-tapping
Options for the $425 service:
Vapor-blasting @ $125
Throttle housings and top covers vapor-blasted after dry bead blasting
This finish is superior in appearance to that of the dry blasted finish
Alodine finish @ $100
Throttle housings are finished with alodine conversion
Period correct OEM finish for 1968 through 1972 year models
Restoration of 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
Restoration of OEM intake manifolds @ $375
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 machined to re-establish flat interfaces
Interior walls smoothed of pitting defects due to corrosion
Exterior finish blasted clean and black 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.
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.