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Troubleshooting
Do I need to connect coolant flow to an EFR Series turbo?
Refer to EFR Technical Guide (AL-Yes, FE-Yes/maybe)
“EFR Series turbochargers with aluminum bearing housings must have a coolant flow path connected, and we recommend the same for iron housings. Coolant should enter one of the two lower ports, then exit out of one of the two upper ports. The two remaining ports should be plugged with the included hardware”
What size oil inlet/outlet do I need for an EFR Series turbo?
Refer to BWS 57001 (sec 6), EFR Technical Guide
“EFR Series turbochargers are equipped with -4AN male oil inlet connections, and we recommend this as the minimum line size. For applications that require oil lines longer than 18”, or for very cold climates, we recommend using -6AN lines.”
“EFR Series turbochargers feature both a 3/8”NPT and a two-bolt (38mm) flanged feature. We recommend oil drain line inner diameters of -8AN (1/2”) or larger. The inner diameter of the oil drain tube/hose (and fittings) should be equal to or greater than the bore in the bearing housing. The oil drain path must be installed with a maximum continuous declination no greater than 45 degrees to the vertical axis. For applications that will use a scavenging pump, rather than gravity, to return oil to the crankcase, we recommend that an oil scavenging tank be mounted below the turbocharger to allow the oil to return to a liquid state before being suctioned out and through the pump”
What size oil inlet/outlet do I need for an AirWerks Series turbo?
Refer to BWS 57001 (sec 6)
“AirWerks Series turbochargers are equipped with ¼”NPT oil inlet threads. We recommend -4AN line as the minimum. For applications that require oil lines longer than 18”, or for very cold climates, consider increasing to -6AN lines.”
“AirWerks Series turbochargers are equipped with a two-bolt (50mm) flanged feature. The oil drain port is equivalent to a ¾” bore. We recommend oil drain line inner diameters of this size or larger, keeping this in mind when selecting any adaptor fittings as well. The oil drain path must be installed with a maximum continuous declination no greater than 45 degrees to the vertical axis. For applications that will use a scavenging pump, rather than gravity, to return oil to the crankcase, we recommend that an oil scavenging tank be mounted below the turbocharger to allow the oil to return to a liquid state before being suctioned out and through the pump”.
What is the maximum turbo speed for my turbo?
Refer to MatchBot Tutorials/Maps/Calculator
“Turbocharger speed should not exceed the corresponding compressor map peak speed shown in MatchBot or within the product catalog. For instances that show tip speed in meters-per-second (m/s), a helpful calculator is provided within MatchBot for conversion.”
What is the maximum temperature for my turbo?
Refer to BWS 57001 and input from ST/BR/JN
What size exhaust is best for my turbo?
Refer to EFR Technical Guide
“Primary exhaust connections should be made with tubing of at least the size referenced by the flange design on the turbine outlet.”
Can I mount my turbocharger at an upward/downward angle?
Refer to BWS 57001 (sec 2.4)
“The maximum permissible declination limits for the turbocharger should not exceed +/-15 degrees from a horizontal axis”
Can I mount my turbocharger from a point other than the turbine flange?
Refer to BWS 57001 (sec 2.2)
“It is recommended to use the turbine inlet flange as the primary mounting surface, and for high-vibration applications or those with tubular manifolds, an additional support brace or bracket should be mounted to the bearing housing if possible”
Should I use an internal or external wastegate?
Refer to EFR Technical Guide/MatchBot
“We recommend using MatchBot to determine optimal wastegate flow values, then choose whether to use an internal or external design based on available materials, fitment envelope and personal choice. EFR Series wastegate turbine housings are designed to have functionality similar to that of a well-designed external wastegate system.”
Should I use the included CRV or an external compressor bypass?
Refer to EFR Technical Guide
“EFR Series turbochargers are fitted with compressor recirculation valves (CRV) that have flow capacity sufficient for the host turbocharger, and are able to recirculate that discharge into the compressor inlet in a very efficient manner. However, if external discharge is preferred, a blanking plate is available, and for many designs, an “SX-E” type compressor cover may be another option.”
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