Specs and size of stock turbo?
#1
Specs and size of stock turbo?
Does anyone know the specs of the stock turbo? I know the s4 and s5's have different manifolds but just about everything else is the same. What is the size or A/R of the compressor and the turbine side? I know it's a decent sized turbo compared to stock turbos on other cars, but just how big is it?
I'd like to know this to help me understand how big of a difference there is between the stock and aftermarket turbos, and just to be able to compare our stock turbos to the stock turbos on other cars.
I'd like to know this to help me understand how big of a difference there is between the stock and aftermarket turbos, and just to be able to compare our stock turbos to the stock turbos on other cars.
#6
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iTrader: (7)
Old thread. Arghx answered his own question nearly 3 years later, lol.
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/stock-turbo-wheel-size-818137/
Hotside AR is 1.0. I've also confirmed these wheel measurements with a set of calipers.
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/stock-turbo-wheel-size-818137/
Hotside AR is 1.0. I've also confirmed these wheel measurements with a set of calipers.
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#8
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iTrader: (7)
If you search, you'll find the concensus is that the S5 turbo has a 1.0 A/R, and the S4 turbo is .84 - 1.0, depending on who you ask. The problem is you have to use calculus to determine the actual area of the turbine inlets, which means calculating the true A/R is above a lot of people. But you can certainly measure height and width to try to get an estimate.
Here, I searched for you:
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/stock-turbo-r-777982/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/whats-r-stock-s5-turbo-595043/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/need-some-info-stock-fc-turbo-charger-495691/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/s5-stock-turbo-specs-267560/
Also, remember that A/R = Area / Radius, so it is a ratio. You can easily have multiple turbine housings that look to be different sizes, but actually have the same A/R.
Here, I searched for you:
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/stock-turbo-r-777982/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/whats-r-stock-s5-turbo-595043/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/need-some-info-stock-fc-turbo-charger-495691/
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/s5-stock-turbo-specs-267560/
Also, remember that A/R = Area / Radius, so it is a ratio. You can easily have multiple turbine housings that look to be different sizes, but actually have the same A/R.
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