54 Heald Street ~ Prepperell, MA 01463
978.302.9386

 

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High Butterfly Throttle Assemblies

high butterfly throttle body

Eurometrix is pleased to offer authentic, NOS, Bosch High Butterfly Throttle Assemblies.

These Assemblies have been painstakingly prepared as a complete kit, which includes all the components necessary to build a correct 2.5 ST, 2.8 RSR, 3.0 RSR, or 3.0 SCRS engine.
 

High Butterfly Throttle Body Assemblies     $14,500

Preparation of the assemblies ~ Funnels ~ Cross Shaft ~ Linkage

Hardware ~ High Butterfly Throttle Assemblies

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Full Kit

 

High Butterfly Throttle Assemblies

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Hardware

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Linkage

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Cross Shaft

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Funnels


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Preparation of the assemblies

The High Butterfly Throttle Body Assemblies are result of a considerable effort in sourcing all the correct component pieces of the air induction system as used on '73 RSR's, '74 RSR's, early 80's SCRS's, and special order '72 911 ST's.  The objective was to create a 'bolt on' kit for the vintage racer or concours enthusiast that is as absolutely authentic as possible.

To ensure perfect fit and finish, an original '72 911 ST  (factory 2.5 engine with high butterflies) was used as a reference.  The result is an air induction system that has never been offered before in complete kit form with so much attention paid to detail.
 
These are complete assemblies that have been flow balanced and are ready to run.
 
It should be noted that these are air induction assemblies - they do not handle the fuel delivery.  A MFI pump and associated fuel lines must be sourced by the customer.  Eurometrix can recommend sources for the components.
 

The following is a list of each component piece of the assembly indicating part source and any work performed on said part

 

Throttle Body Housing
 
NOS
 
Throttle body housings are in excellent original condition with virgin factory bushings. Associated hardware (linkage arms, end stop screws, etc.) were stripped, polished, and replated because the original finish had dulled over the years.
 
Throttle Shafts ~
 
NOS
 
Shafts are in perfect, original condition.
 
Throttle Plates ~
 
Eurometrix machined
 
Throttle plates were machined with the correct beveled angle and fitted to the housings.  The original cheese head throttle plate screws were reproduced in stainless steel.
 
Throttle Shaft Couplers ~
 
Reproduced
 
Originals are NLA. Ours are reverse engineered with an aluminum/zinc casting just  like the factory.
 
Air Funnels ~
 
Reproduced
 
Originals are NLA. Ours are reverse engineered with a Delrin injection mold just like the factory.

 
Cross Shaft and Hardware ~
 
NOS
 
Original finish had dulled over time so the cross shafts and hardware were stripped, polished, and replated.
 
Cross Shaft Uprights ~
 
CNC
machined
 
Originals are not available.  Reproductions were CNC machined from stock aluminum.  New German needle bearings were pressed in.
 
Linkages ~
 
NOS & Eurometrix machined
 
Droplinks from the cross shaft to throttle arms are factory originals.  Pump link and link to bell crank were fabricated using factory pieces as a template.  New German M8 locking ball caps are included..

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