Services

Level 1 - $1725 for complete carburetors; $975 for throttle bodies only

Our baseline remanufacturing service completely rebuilds both of your Webers after re-bushing the outer throttle shaft bearings and replacing the throttle valves followed with tuning on our test engine, returning them ready to run. The Level 1 remanufacturing service for complete carburetors includes:

Carburetors completely disassembled (excluding removal of lead plugs and studs)
Outer throttle body bearings replaced with oil-impregnated, bronze bearings (two per throttle body)
O-ring seals installed at outer throttle shaft bearings as necessary
- O-rings installed as a cost effective alternative to replacing excessively worn throttle shafts
Throttle bores honed and measured for actual size
New throttle valves machined to match actual throttle bores
Bottom surfaces of Throttle Bodies re-machined for flatness
Sealing surfaces refreshed by machining:
- Banjo interfaces on Top Covers
- Float well cap interfaces on Top Covers
- Main jet holders and fuel bowl drain bolt interfaces on Throttle Bodies
Throttle Bodies ultrasonically cleaned and fuel galleries flushed
Steel components de-burred and factory zinc-plated finishes restored on all removable components (studs excluded)
Air vent pipes in top covers removed, replated and reinstalled
Anti-percolation holes drilled in top covers
Brass parts de-burred and polished
Lead plugs reset by peening to assure sealing of fuel galleries including:
- Throttle bodies, accelerator pump bodies and accelerator squirter bolts
Inspection of all components:
- Jet sizes verified correct per identifications
- Individual parts checked for distortion, corrosion, type, physical defects, etc.
- Throttle bodies checked for corrosion, physical defects, etc.
Fuel floats blueprinted:
- Fulcrum arms straightened and adjusted for height relationship with float
- Needle interface tabs straightened and divots removed
- Fulcrum axis bale reformed and reamed to precision diameter
Throttle Lever Arms reworked as follows:
- Straightened and de-burred
- Throttle shaft hole resized for tight fit
- OEM style, riveted 8mm ball studs installed
- Adjusted to provide fully open throttle valves
Throttle Shafts reworked as follows:
- Straightened for both twist and bending distortions
- Black oxide finished restored
- End plates on short throttle shafts restored with zinc-plated finish
Accelerator pumps blueprinted including:
- Covers resurfaced to re-establish flat sealing interfaces
- Fulcrum pins rotated in covers thereby providing fresh pivot axis surfaces
- Disc valves resurfaced for flatness
- Main pump bodies resurfaced to provide correct gasket sealing by flapper valve
- Vital for equal fuel squirt distribution to all cylinders
- Main pump bodies updated with internal relief holes as necessary
- Accelerator pump jets - fuel galleries cleaned and resized to specifications
- Fulcrum pins and lever arms finishes restored by zinc-plating
Reassembly using new gaskets and new hardware including:
- External throttle return springs
- Accelerator pump levers (installed on throttle shafts)
- Adjustible Accelerator Pump Rods
- Accelerator circuit fuel supply check valves
- Aircraft quality safety wire installation
- Tall, OEM style, nylock hex nuts for throttle bodies and air horns
- Braided, OEM style, German fuel line with ferrules
- Miscellaneous other fasteners replaced
- Installation gasket kit including:
- fuel inlet needle valves
- intake manifold to carburetor gaskets
- air cleaner gaskets
On-engine tuning including adjustments of:
- Idle air balance screws
- Idle mixture screws
- Fuel float needle valves shimmed
- Throttle stop screws set
- Accelerator Pump Rods adjusted for injection volume

Notes:
- For "Complete Carburetor" service:
- Customer to supply:
- Complete carburetors including Banjo fittings and intake air horns
- Customer to retain:
- Air cleaners and air cleaner housing components
- Intake manifolds
- Throttle linkages
- For "Throttle Body Only" service:
- Customer to supply:
- Main throttle bodies with throttle shafts and throttle lever arms installed
- Idle speed stop screws with springs
- Idle air correction screws
- Customer to retain:
- Aluminum top covers of carburetor assemblies
- Jets, idle mixture screws, brass port plugs, etc.
- Accelerator pump assembly
- All internal components of the throttle body
- Air cleaners and air cleaner housing components
- Intake manifolds
- Throttle linkages
- Those customers sending IDS throttle bodies please ship with intake air horns installed to help prevent damage of high speed enrichment tubes.
- Intake air horns with OEM zinc plating will be refinished by zinc plating; air horns with OEM nickle finish will be sent to specialty finishing facility for a price adder quoted at the beginning of the project.
- Please review Standard Shipping Instructions provided on theTerms & Scheduling web page.
- Customer is responsible for performing final adjustments to tailor the tuning of their carburetors to their engine.
- 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.
- Cost reduction for deletion of replating services - $110
- List of services shown is for complete carburetors; "Throttle Body Only" sevice addresses only those items associated with the main throttle bodies

Level 2 - $1875 for complete carburetors; $1125 for throttle bodies only

The Level 2 service option improves on the Level 1 service by rebushing 100% of all the throttle shaft bearings and resizing the throttle bodies for new throttle valves. The results of this service package are carburetors that tune and run equal to new Webers. The following are additions to the Level 1 remanufacturing service for complete carburetors with the following items addressed:

All throttle shaft bushings replaced using oil-impregnated bronze bushings (Qty = six per throttle body)
Throttle bores resized (corrects for wear and distortions from aging)
New throttle valves matched to the resized throttle bores

Notes:
- For "Complete Carburetor" service:
- Customer to supply:
- Complete carburetors including Banjo fittings and intake air horns
- Customer to retain:
- Air cleaners and air cleaner housing components
- Intake manifolds
- Throttle linkages
- For "Throttle Body Only" service:
- Customer to supply:
- Main throttle bodies with throttle shafts and throttle lever arms installed
- Idle speed stop screws with springs
- Idle air correction screws
- Customer to retain:
- Aluminum top covers of carburetor assemblies
- Jets, idle mixture screws, brass port plugs, etc.
- Accelerator pump assembly
- All internal components of the throttle body
- Air cleaners and air cleaner housing components
- Intake manifolds
- Throttle linkages
- Those customers sending IDS throttle bodies please ship with intake air horns installed to help prevent damage of high speed enrichment tubes.
- Intake air horns with OEM zinc plating will be refinished by zinc plating; air horns with OEM nickle finish will be sent to specialty finishing facility for a price adder quoted at the beginning of the project.
- Please review Standard Shipping Instructions provided on the Terms & Scheduling web page.
- Customer is responsible for performing final adjustments to tailor the tuning of their carburetors to their engine.
- 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.
- Cost reduction for deletion of replating services - $110
- List of services shown is for complete carburetors; "Throttle Body Only" sevice addresses only those items associated with the main throttle bodies

Level 3 - $2225 for complete carburetors

The Level 3 service adds restoration to the Level 2 service resulting in completely restored carburetors both mechanically and cosmetically. All components are removed, inspected and replaced or restored. The following are additions to the Level 2 remanufacturing service above:

Carburetors are completely disassembled including removal of lead plugs and studs
Factory finishes restored on all components
Includes detailed cleaning of fuel galleries and re-plugging with tapered lead plugs
All threaded features retapped or chased to refresh
Includes re-plating of all throttle linkage components including:
Vertical drop links and longitudinal link
Throttle cross bar
Cross bar mounting brackets
Bell crank

Notes:
- Customer to supply:
- Complete carburetors including Banjo fittings and intake air horns
- Throttle linkages, cross bar, cross bar mounting brackets and bell crank
- Customer to retain:
- Air cleaners and air cleaner housing components
- Intake manifolds
- Those customers sending IDS throttle bodies please ship with intake air horns installed to help prevent damage of high speed enrichment tubes.
- Intake air horns with OEM zinc plating will be refinished by zinc plating; air horns with OEM nickle finish will be sent to specialty finishing facility for a price adder quoted at the beginning of the project.
- Please reviewStandard Shipping Instructions provided on the Terms & Scheduling web page.
- Customer is responsible for performing final adjustments to tailor the tuning of the carburetors to their engine.
- 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.

Modifications and Service Options

The following modification services and parts are offered as cost adders for services listed above. Please inquire for further details:

Convert 40mm throttle bodies to 42mm bores (includes throttle shaft and main venturi modifications) - $175
This modification is a cost adder for Level 2 or Level 3 services as listed above
Customer to supply venturis for modification or Performance Oriented can supply these
Convert 40mm throttle bodies to 44mm bores (includes throttle shaft, main venturi and progression circuit madifications) - $375
This modification is a cost adder for Level 2 or Level 3 services as listed above
Customer to supply venturis for modification or Performance Oriented can supply these
Convert 40mm throttle bodies to 46mm bores (includes throttle shaft, progression circuit and venturi grub screw modifications) - $425
This modification is a cost adder for Level 2 or Level 3 services as listed above
"Throttle Body Only" customers to supply main venturi grub screws for modification
Port top of intake manifolds to match modified throttle bore sizes - $125/ pair
Modify main throttle bodies to secure tall auxiliary venturis - $125
Tall auxiliary venturis vibrate and loosen with time which causes faulty transition onto the main circuit
Service includes removal and replating of throttle body studs
Remove lead plugs, clean fuel galleries and replug with tapered lead plugs - $105
Relieve main jets for fuel pickup and install fuel well dams - $90
Modify IDTP Throttle Lever Arms to look like IDA arms - $25
Tune-able idle air correction jet modification - $75
Extra sets of air correction jets - $25/set of six
Media blast exterior of throttle bodies - $75
All exterior ports are sealed and all studs protected from blasting media
Media type selected per customer preference
Performance Profile for throttle shafts (reduces cross-section for better flow) - $75/set; profile machined on your throttle shafts
40mm Webers with Performance Profile shafts will flow like 44mm bores with standard 8mm shafts @ wide-open-throttle
42mm Webers with Performance Profile shafts will flow like 46mm bores with standard 8mm shafts @ wide-open-throttle
44mm Webers with Performance Profile shafts will flow like 48mm bores with standard 8mm shafts @ wide-open-throttle
46mm Webers with Performance Profile shafts will flow like 50mm bores with standard 8mm shafts @ wide-open-throttle

Parts for Sale

Replacement long throttle shaft, 8mm - $110
Replacement short throttle shaft, 8mm - $110 (these come with new end plates installed)
Replacement throttle lever arms (These are new arms and exact copies of OEM arms; specify C or C1 application) - $18 each
Replacement throttle lever arms (These are new, Weber throttle arms and are the type used on 911R and 906 race application Webers) - $45/pair
Racing air screens for emulsion tube wells (906 & 911R style) - $125/set of four
Updated shaft couplings (replace folded spring couplings with cylindrical type) - $150/set

Additional Services

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