Expected spool characteristics.
06-07-2010, 07:20 PM
#1
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Expected spool characteristics.
I just picked up a new turbonetics turbo for 75 bucks. (gotta love soldiers that need money quick) I bought it not knowing if I could really use it, but hell for 75 bucks I'd buy it for a paperweight. According to the turbonetics website the part number identifies it as a T3/T4E-50,Stg 5,.63. I've seen plenty of guys run 50 trims with great success but I've not seen many people with a stage 5 turbine wheel. How much will this affect spool? I'm expecting full boost hopefully before 4500 rpm. I'd appreciate any insight. Thanks
Engine=
94 BP
Pauter Rods
Weisco 8.6:1 Pistons
Ported head.
ETD shorty Manifold
Full 3in exhaust.
Engine=
94 BP
Pauter Rods
Weisco 8.6:1 Pistons
Ported head.
ETD shorty Manifold
Full 3in exhaust.
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06-07-2010, 10:24 PM
#13
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The thing is OP, if it's too lazy, you can switch that out. Shoot I wonder what a good turbine housing and stage V sells for. If you find a used hotside thats more focused on reduced boost threshold while selling your hotside you might be able to make money by buying that thing. Which is about as awesome as it gets.
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06-07-2010, 10:30 PM
#14
No it doesn't. Turbine AR = area/radius. Basically the area is the cross section of the turbine inlet, and the radius is the distance from the center of the turbine shaft to the center of the inlet.
Turbine stage is more correlated to the diameter and shape of the turbine blades. Larger turbine wheel = able to flow more but it will have more inertia and a smaller pressure differential which will cause some lag. Likewise, turbine blades that have less pitch will flow more, but just like a wind turbine, without enough pitch, it won't gather as much energy from the exhaust flow which will slow down spool.
Turbine stage is more correlated to the diameter and shape of the turbine blades. Larger turbine wheel = able to flow more but it will have more inertia and a smaller pressure differential which will cause some lag. Likewise, turbine blades that have less pitch will flow more, but just like a wind turbine, without enough pitch, it won't gather as much energy from the exhaust flow which will slow down spool.
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06-08-2010, 12:19 AM
#16
No it doesn't. Turbine AR = area/radius. Basically the area is the cross section of the turbine inlet, and the radius is the distance from the center of the turbine shaft to the center of the inlet.
Turbine stage is more correlated to the diameter and shape of the turbine blades. Larger turbine wheel = able to flow more but it will have more inertia and a smaller pressure differential which will cause some lag. Likewise, turbine blades that have less pitch will flow more, but just like a wind turbine, without enough pitch, it won't gather as much energy from the exhaust flow which will slow down spool.
Turbine stage is more correlated to the diameter and shape of the turbine blades. Larger turbine wheel = able to flow more but it will have more inertia and a smaller pressure differential which will cause some lag. Likewise, turbine blades that have less pitch will flow more, but just like a wind turbine, without enough pitch, it won't gather as much energy from the exhaust flow which will slow down spool.
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06-08-2010, 07:29 AM
#17
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Anything above that it spools great, not as fast as a 15G or t28, but real good for that big of a turbo on a 1.6L.
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06-08-2010, 08:00 AM
#18
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Stage I vs. Stage III
Look at the spacing, the stage three has more spacing between the fins to greatly reduce back-pressure and promote flow, but it takes more effort to get the wheel spinning.
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