4451 ASR
Art Science Racing
MainComponentsServicesWho are 4451 ASRTechnical DataTool Room
Timing Components
Underdrive Components
Fuel System Components
Balance Shaft Components
Intake And Exhaust
Floating Rotor Packages
Boost Components
DME KLR Components
Studs And Packages
Other Parts We Make

Boost Components
26-6/8 Turbo Charger updates:

ASR268 St-3 Bell Choke and Diffuser Installation.
Titanium Compressor Nut (MRL)©
ASR268 St-3 3KModASR268 St-3 3KMod
ASR268 St-3 3KModASR268 St-3 3KMod

Basic Specifications:

-> Turbos are built in stages 1 through 3.
-> Stage 3 Turbos being highest in development and refinement.
-> Linear and Bell replaceable chokes and diffusers.
-> Anemometric Analyzed Flow and Pressure.
-> Highly refined Turbine and Compressor Stage geometries.
-> Radius Linearizer (MRL) for Bell choke St-3.
-> Anodized To color indicate refinement stage and type.
-> Much higher tolerances. We take this very serious, +/- .00012 serious.
-> Machine from solid, gone is the porous cast alloy for these critical parts.
-> Perfect fit and Flanged Coupled for heat exchange.
-> Titanium Compressor Nut (MRL)
-> 6000 Series Aluminum Diffuser Plate and Choke/Venturi.

Why? Several reasons. But in a single word, refinement!
4451 ASR use toolroom practices and are unlimited by cost of materials and time.

We can modify your 266/268 3K turbocharger or you can buy one of our in house mods.
Please E-Mail for information. Jeff@4451ASR.COM

4451ASR Cycling Valve:

(Intentionally delayed as part of Turbo/Wastegate update.)

Cycle Valve L Cycle Valve R
Concept - Cycling Valve.

Basic Specification:

-> Multiple Jet sizes
-> New Potting Compound
-> Custom Viton Seals (in house)
-> Limited Service abililty
-> New port and vein geometry
-> New surge chamber
-> 3AN to waste gate
-> Al Alloy Chassis

4451ASR Waste Gate Actuator:

4451ASR Vacuum system
Concept - 4451ASR Waste Gate Actuator.

-> Single ended - Vacuum OE replacement
-> Differential - Vacuum & Pressure
-> Direct partner to the 4451ASR Cycling Valve
-> No Shimming Required - appropriate spring preload.

Line Package -3AN
MainComponentsServicesWho are 4451 ASRTechnical DataTool Room