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| performance:turbocharging [2020/04/29 02:48] – ben | performance:turbocharging [2020/04/29 02:56] (current) – ben | ||
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| Generally a good street turbo size would be in the 56-62mm range on the compressor housing. These will have very quick spool times and can likely make 500-600 wheel horsepower depending on the rest of the setup. \\ Generally a medium performance size would be in the 60-68mm range. These can make around 600 wheel horsepower depending on the turbo and the intercooling setup. | Generally a good street turbo size would be in the 56-62mm range on the compressor housing. These will have very quick spool times and can likely make 500-600 wheel horsepower depending on the rest of the setup. \\ Generally a medium performance size would be in the 60-68mm range. These can make around 600 wheel horsepower depending on the turbo and the intercooling setup. | ||
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| ===== Other Considerations on Turbo Selection ===== | ===== Other Considerations on Turbo Selection ===== | ||
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| + | ==== Bearings ==== | ||
| Generally most older turbochargers will use a journal bearing that only requires oil to lubricate and cool the bearings. | Generally most older turbochargers will use a journal bearing that only requires oil to lubricate and cool the bearings. | ||
| Newer turbos will use ball bearings in the compressor housing and will typically use engine coolant to help cool the bearings as well as oil to lubricate them. \\ Generally ball bearing turbos can spool faster and create less pre-turbo back pressure due to the decrease in friction in the bearings. | Newer turbos will use ball bearings in the compressor housing and will typically use engine coolant to help cool the bearings as well as oil to lubricate them. \\ Generally ball bearing turbos can spool faster and create less pre-turbo back pressure due to the decrease in friction in the bearings. | ||
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| A ball-bearing turbocharger with a billet compressor wheel will spool faster and have more room to make power than a similarly sized journal bearing turbo. | A ball-bearing turbocharger with a billet compressor wheel will spool faster and have more room to make power than a similarly sized journal bearing turbo. | ||
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| + | ==== Compressor Wheel ==== | ||
| Some turbos will also have billet aluminum compressor wheels that will help speed up the spool times due to the decrease in rotating mass. | Some turbos will also have billet aluminum compressor wheels that will help speed up the spool times due to the decrease in rotating mass. | ||
| - | Other main factors that can improve spool times are variable vane turbos, | + | Other main factors that can improve spool times are: |
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| + | * variable vane technology usage | ||
| + | * twin-scroll turbine housings | ||
| + | * size of the turbine housing | ||
| + | * A/R ratio of compressor and turbine housing | ||
| + | * camshaft selection | ||
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| + | However there a lot of other things that play a big factor here as well. This are just some of the more commonly discussed heavy hitters. | ||
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| + | ===== Resources ===== | ||
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| + | [[https:// | ||