Turbo Questions
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Joined: Mar 2000
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From: Southern NH
Turbo Questions
Kind of a n00b to forced induction still, I understand 95% of everything except turbo sizes baffle me.
Like TD-05 18G. Beyond me. As well as A/R and all that other shizz.
Any insight?
Like TD-05 18G. Beyond me. As well as A/R and all that other shizz.
Any insight?
On permanent hiatus
Joined: Jul 2004
Posts: 9,716
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From: A forum with actual tech
Here is a good place to start:
http://www.honda-tech.com/zerothread?id=1024174
"A/R stands for area ratio and is a mathematical description of the cross sectional area of the turbine housing inlet divided by the radius described by the center of the turbine wheel to the center of the turbine housing inlet."
"A large A/R housing has good flow, less backpressure and creates more top end power at the same boost pressure by improving volumetric efficiency. It will also spool slower. Conversely, a small A/R housing has less flow and more backpressure but quicker turbo spool."
http://www.honda-tech.com/zerothread?id=1024174
"A/R stands for area ratio and is a mathematical description of the cross sectional area of the turbine housing inlet divided by the radius described by the center of the turbine wheel to the center of the turbine housing inlet."
"A large A/R housing has good flow, less backpressure and creates more top end power at the same boost pressure by improving volumetric efficiency. It will also spool slower. Conversely, a small A/R housing has less flow and more backpressure but quicker turbo spool."