2.4L Twin Scroll HTA turbo setup
You are correct, the 2, 38mm tubes merge into one 38mm tube. We have found this works just as well as dual vents. We seen the same power at the same boost with both a dual vent, and this 2 into1 singlevent s etup. Also, because the merge is after the wastegates, the system retains the pressure pulse properties that makes the twin scroll set-ups work.
The main reason for the 2 into 1 WG dump is that it really helps with clearance to the radiator and lower intercooler pipe. It also allows the kit to work with our Re-Circ. downpipe if the customer so desires. Lastly, it makes the install way easier as well, in fact because our kits come pre-assembled all that the customer has to do is hook up the oil & water lines and bolt the kit on.
Thanks
ETS
The main reason for the 2 into 1 WG dump is that it really helps with clearance to the radiator and lower intercooler pipe. It also allows the kit to work with our Re-Circ. downpipe if the customer so desires. Lastly, it makes the install way easier as well, in fact because our kits come pre-assembled all that the customer has to do is hook up the oil & water lines and bolt the kit on.
Thanks
ETS
Only way it could be an issue is if you want to run very very low boost and are pushing the car hard.
The more boost/bigger the turbo the smaller the wastegate you need to control boost effectively, the smaller the turbo/lesser boost you want to run requires a bigger wastegate.
I'm gunna go out on a limb and guess that those being put into one 38mm tube is a restriction but will not show itself at high power levels, rather if attempting to run really low boost it might be an issue.
Scorke
The more boost/bigger the turbo the smaller the wastegate you need to control boost effectively, the smaller the turbo/lesser boost you want to run requires a bigger wastegate.
I'm gunna go out on a limb and guess that those being put into one 38mm tube is a restriction but will not show itself at high power levels, rather if attempting to run really low boost it might be an issue.
Scorke
area under the curve, 37r will make this sort of power but not everybody is after drag cars and want a 2000rpm power band.
4088r
i have a stock block hks 272 cammed evo 8 w/pte6765b turbo (single scroll)my friend has a gt4088r single scroll he wants to trade.i am considering doing a stroker motor in the future (car only has 35k on it now) .would this be a good trade.seems like most of the talk here is concerning twin scroll set ups.i just dont see the benefit of changing out all my stuff for a few hundred rpms earlier spool time .thanks
I think the TS 4088 has been proven to be alot more than a few hundred rpm when you start running real boost. At the 20-25psi level it might be a few hundred but at the 35+ level I would assume you'd see closer to a 1000rpm difference based on the dyno sheets that I have seen.
Michael- Cool, I honestly think that for those that want this power level the HTA86 if you want a T3 and the 4088 if you want a T4 are the choices. It will be interesting to see what the other turbos like the BW 91-79 end up doing.
I am so stoked about the 4088R though...you guys have no idea.
Michael- Cool, I honestly think that for those that want this power level the HTA86 if you want a T3 and the 4088 if you want a T4 are the choices. It will be interesting to see what the other turbos like the BW 91-79 end up doing.
I am so stoked about the 4088R though...you guys have no idea.
Something you do not understand?
Scorke
# How does a Wastegate work?
A Wastegate is simply a turbine bypass valve. It works by diverting some portion of the exhaust gas around, instead of through, the turbine. This limits the amount of power that the turbine can deliver to the compressor, thereby limiting the turbo speed and boost level that the compressor provides.
* The Wastegate valve can be "internal" or "external". For internal Wastegates, the valve itself is integrated into the turbine housing and is opened by a turbo-mounted boost-referenced actuator.
* An external Wastegate is a self-contained valve and actuator unit that is completely separate from the turbocharger.
* In either case, the actuator is calibrated (or set electronically with an electronic boost controller) by internal spring pressure to begin opening the Wastegate valve at a predetermined boost level.
* When this boost level is reached, the valve will open and begin to bypass exhaust gas, preventing boost from increasing.
A Wastegate is simply a turbine bypass valve. It works by diverting some portion of the exhaust gas around, instead of through, the turbine. This limits the amount of power that the turbine can deliver to the compressor, thereby limiting the turbo speed and boost level that the compressor provides.
* The Wastegate valve can be "internal" or "external". For internal Wastegates, the valve itself is integrated into the turbine housing and is opened by a turbo-mounted boost-referenced actuator.
* An external Wastegate is a self-contained valve and actuator unit that is completely separate from the turbocharger.
* In either case, the actuator is calibrated (or set electronically with an electronic boost controller) by internal spring pressure to begin opening the Wastegate valve at a predetermined boost level.
* When this boost level is reached, the valve will open and begin to bypass exhaust gas, preventing boost from increasing.
I think the TS 4088 has been proven to be alot more than a few hundred rpm when you start running real boost. At the 20-25psi level it might be a few hundred but at the 35+ level I would assume you'd see closer to a 1000rpm difference based on the dyno sheets that I have seen.
Michael- Cool, I honestly think that for those that want this power level the HTA86 if you want a T3 and the 4088 if you want a T4 are the choices. It will be interesting to see what the other turbos like the BW 91-79 end up doing.
I am so stoked about the 4088R though...you guys have no idea.
Michael- Cool, I honestly think that for those that want this power level the HTA86 if you want a T3 and the 4088 if you want a T4 are the choices. It will be interesting to see what the other turbos like the BW 91-79 end up doing.
I am so stoked about the 4088R though...you guys have no idea.
It's amazing to me the amount of power people are making now then a year ago. The evolution is a whole different animal.
Thanks,
Michael
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