just wondering what exactly this is for ? i mean yeah maybe it will give you quick spool but only because your not getting the full flow.... i mean its kind of like just driving with half the manifold blocked and then you just get normal boost... so is it for not getting full boost then suddenly full boost ? and why not just have your turbo directly on there with out this ? just wondering what benefits this has ?
@1994toyotasupra : first off it does not block half of the manifold. if you read the description it says that it is ONLY meant to be used on undivided manifold, meaning it wont block off half the exhaust gas's. what it does is allow you to change the A/R size of any divided turbo untill a set boost level is acheived, resulting in a quicker spool up. the smaller the A/R size, the quicker the turbo will build boost. you could also refer to this as a "lag" reducer device.
@hendricks152003 Idk why but it just seems like that wouldnt make your turbo spool faster... its almost like if you block hald that twin scroll then your only getting half the manifold pressure coming through to the turbine... an then im sure when its opened then the boost would suddenly jump up but untill then i dont see how when this is closed the turbo spools faster.. aparently when one side is blocked all the pressure is directed towards the back to spin the turbine faster,,
@1994toyotasupra : its really simple, all the exhaust gas is forced into a smaller A/R housing, increasing spool up. remember, the smaller the exhaust A/R housing is, the quicker the spool is. so if it is a really large A/R housing like most twin scrolls, then they tend to be really laggy because of the larger volume, and it takes more exhaust gas pressure to spin the wheel(creating lag).
@1994toyotasupra : by forcing the same amount of exhaust gas(volume and pressure) into only one scroll, makes the pressure needed to spin the wheel alot less. your missing the point, your not losing exhaust gas pressure, your re-routing it thats all. all the gas enters a smaller housing creating more pressure to spin the wheel(smaller vol). then when the valve opens, manifold pressure decreases some but the turbo is already spooled up at that point and the turbo can then start to make big power.
@hendricks152003 i guess i just forsome reason personally feel like blocking a section off wouldnt make it spool faster.. maybe it does but ehh.. when i boost my 2jz ima just rock normal setup
@1994toyotasupra: its a really cool thing to have when you have a large turbo. i know. i have a To4B twin scroll(1.15 A/R housing...to damn big) on my RB. when you decide to upgrade your fuel system and turbo for more power look into a divided turbo with a spool valve, quick spool up and the benifits of a larger flowing turbo in one=win. watch the dyno vid of the white supra on the top right and notice how much sooner he made torque with it
@hendricks152003 but if its blocked off your not gonna get as much pressure to spin the turbine. i guess i just am thinking about it too much to understand.
@1994toyotasupra From reading your posts it seems you might be missing out on the key element here: it requires a twin scroll turbine's divided housing to work. All the gas is forced to flow into only one scroll, effectively lowering the A/R ratio, until the valve opens.
It will cause backpressure yes but this type of system was utilized on 87-88 model turbo rotary engines (Rx-7) from the factory. It can be made to work reliably and safely.
its kinda like cloggin ur toilet with ur huge logs....LoL
kinkyflicks 1 week ago
just wondering what exactly this is for ? i mean yeah maybe it will give you quick spool but only because your not getting the full flow.... i mean its kind of like just driving with half the manifold blocked and then you just get normal boost... so is it for not getting full boost then suddenly full boost ? and why not just have your turbo directly on there with out this ? just wondering what benefits this has ?
1994toyotasupra 6 months ago
@1994toyotasupra : first off it does not block half of the manifold. if you read the description it says that it is ONLY meant to be used on undivided manifold, meaning it wont block off half the exhaust gas's. what it does is allow you to change the A/R size of any divided turbo untill a set boost level is acheived, resulting in a quicker spool up. the smaller the A/R size, the quicker the turbo will build boost. you could also refer to this as a "lag" reducer device.
hendricks152003 5 months ago
@hendricks152003 Idk why but it just seems like that wouldnt make your turbo spool faster... its almost like if you block hald that twin scroll then your only getting half the manifold pressure coming through to the turbine... an then im sure when its opened then the boost would suddenly jump up but untill then i dont see how when this is closed the turbo spools faster.. aparently when one side is blocked all the pressure is directed towards the back to spin the turbine faster,,
1994toyotasupra 5 months ago
@1994toyotasupra : its really simple, all the exhaust gas is forced into a smaller A/R housing, increasing spool up. remember, the smaller the exhaust A/R housing is, the quicker the spool is. so if it is a really large A/R housing like most twin scrolls, then they tend to be really laggy because of the larger volume, and it takes more exhaust gas pressure to spin the wheel(creating lag).
hendricks152003 5 months ago
@1994toyotasupra : by forcing the same amount of exhaust gas(volume and pressure) into only one scroll, makes the pressure needed to spin the wheel alot less. your missing the point, your not losing exhaust gas pressure, your re-routing it thats all. all the gas enters a smaller housing creating more pressure to spin the wheel(smaller vol). then when the valve opens, manifold pressure decreases some but the turbo is already spooled up at that point and the turbo can then start to make big power.
hendricks152003 5 months ago
@hendricks152003 i guess i just forsome reason personally feel like blocking a section off wouldnt make it spool faster.. maybe it does but ehh.. when i boost my 2jz ima just rock normal setup
1994toyotasupra 5 months ago
@1994toyotasupra: its a really cool thing to have when you have a large turbo. i know. i have a To4B twin scroll(1.15 A/R housing...to damn big) on my RB. when you decide to upgrade your fuel system and turbo for more power look into a divided turbo with a spool valve, quick spool up and the benifits of a larger flowing turbo in one=win. watch the dyno vid of the white supra on the top right and notice how much sooner he made torque with it
hendricks152003 5 months ago
Comment removed
TheFuriousTadpole 4 months ago
@hendricks152003 but if its blocked off your not gonna get as much pressure to spin the turbine. i guess i just am thinking about it too much to understand.
1994toyotasupra 5 months ago
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@1994toyotasupra From reading your posts it seems you might be missing out on the key element here: it requires a twin scroll turbine's divided housing to work. All the gas is forced to flow into only one scroll, effectively lowering the A/R ratio, until the valve opens.
TheFuriousTadpole 4 months ago
This has been flagged as spam show
I would like to see this on 1200°C :)
TDiKlub 10 months ago
It will cause backpressure yes but this type of system was utilized on 87-88 model turbo rotary engines (Rx-7) from the factory. It can be made to work reliably and safely.
rjherche 1 year ago
I bet these really heatup the manifold?
MegaMarshal 1 year ago