to twin scroll or not to twin scroll. T3 housing comparison
Mar 10, 2008, 04:50 AM
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to twin scroll or not to twin scroll. T3 housing comparison
Im re-doing my 35r turbo setup at the moment, i had this 0.82 TS housing laying around that was meant to be for a GT30r but never got round to fitting it. While i had everything in bits on the garage floor i decided to see how the TS housing would fit on the 35r. Obviously it shouldnt fit and i got a bit of a shock when it slid straight over the 35r turbine wheel 
They must have sent me the wrong one, i dodnt even know there is a 0.82 housing available for the 35r, only .78 and the hard to get 1.01?
Im going to be making a new manifold anyway so this got me thinking i could do a twin scroll manifold and use this housing. My concern is it might be too small and surge like a **** and die up top. The volute part that feeds the turbine wheel looks very small and to me looks alot more restrictive than the undivided 0.82 T3. I guess i could try it and if its crap try and get the 1.01 but these are pretty hard to get, especially in Australia.
They must have sent me the wrong one, i dodnt even know there is a 0.82 housing available for the 35r, only .78 and the hard to get 1.01?Im going to be making a new manifold anyway so this got me thinking i could do a twin scroll manifold and use this housing. My concern is it might be too small and surge like a **** and die up top. The volute part that feeds the turbine wheel looks very small and to me looks alot more restrictive than the undivided 0.82 T3. I guess i could try it and if its crap try and get the 1.01 but these are pretty hard to get, especially in Australia.
Mar 10, 2008, 02:17 PM
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I noticed you said you were making a manifold anyway. I assume you will fabricate it yourself? If so, why not make a twin scroll and see how it works with that housing. If you don't like it then go back to the single scroll. But I will say based on what I've read from Evodans thread it will probably do exactly what you are expecting.
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Mar 10, 2008, 03:20 PM
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I noticed you said you were making a manifold anyway. I assume you will fabricate it yourself? If so, why not make a twin scroll and see how it works with that housing. If you don't like it then go back to the single scroll. But I will say based on what I've read from Evodans thread it will probably do exactly what you are expecting.
To me the TS footprint looks smaller than regular T3, I dont want to end up with no top end because of a restrictive housing.
Think im just going to do a normal 4-1 with the regular 0.82.
