This might sound noobish but, why do people say going single is better?
How is that a fully built single is better over a twin built engine?
How is that a fully built single is better over a twin built engine?
single over twin
- Thread starter zSP3CTERz
- Start date
plain ole physics.
One machine doing work instead of two.
Better efficency. Less energy loss.
That's it.
One machine doing work instead of two.
Better efficency. Less energy loss.
That's it.
That's it.
figgie for President. :biglaugh:
____
::Short Answer::
|PROS|
Find a good medium-frame single setup, and it'll spool in some cases,
as fast as the stock twins, will be more efficient (won't start choking at high RPM's),
and be much more capable of making big power in the long run.
|CONS|
You no longer get to tell your ricer friends, "I have a twin turbo Supra".
Jeff
figgie for President. :biglaugh:
____
::Short Answer::
|PROS|
Find a good medium-frame single setup, and it'll spool in some cases,
as fast as the stock twins, will be more efficient (won't start choking at high RPM's),
and be much more capable of making big power in the long run.
|CONS|
You no longer get to tell your ricer friends, "I have a twin turbo Supra".
Jeff
ok lets go by what you said, (example story) I have 2 huge turbos spooling fast as hell. but you have 1 turbo spooling just as good/fast. So i get mad and throw away mine and buy 2 of yours. now having 2 of yours make me faster or not? or will there always be a way to have one faster than 2
zSP3CTERz;1229671 said:
Well, I'm referring specifically to the stock twins that come on JZ motors.
There's a big difference between
This:
And This:
At that point, I think, more or less, just boils down to personal preference.
If you want to spend the extra money to fab up twice the piping,
the custom manifold, oil lines, etc...Then more power to you.
But case in point, For the money and for power capabilities,
Most just go with a Single Turbo setup.
Jeff
An engine can only flow so much air. Whether one turbo takes all of it or two split it, it's the same amount of power. You can have too small of a turbo and too large of a turbo no matter if there is two or one. Reason for going single is cost, fewer parts is more reliable, and ease of maintenance.
I don't know what it is but people always seem to think that more turbos = more power. With the turbo technology these days you can get good spool and an incredible amount of power. For instance, the new precision 6265 turbos spool like a GT35R but push enough air to compete with a T67. In the end it is really your choice as it is your car.
For me it was a no brainer because less parts, smaller cost, better thermal efficiency and a less complicated system gives me more time to play.
For me it was a no brainer because less parts, smaller cost, better thermal efficiency and a less complicated system gives me more time to play.
I dont think more turbos is better.:icon_razz i just really wanted to know why single is better. thank yall for the info.
zSP3CTERz;1230340 said:
Does single over twin usually only apply to supras? some of the fastest cars are twin turbo v8. Granted they are a v8 but wouldnt the same terminology apply there to?
Well for ease of convenience a twin turbo setup just makes sense on a v8. Imagine trying to plumb in a single kit on a v8.... You would have piping going all over the place. You could also do a bottom mount single in this case but a twin on a v8 is definitely a lot more feasible.
im a new to this but i thought a non sequential twin turbo has a better power band due to firing every other cylinder on each turbo so there is no exhaust valve interlacing where as a single with a log mani would have exhaust goin into the previous cylinder like as #5 exhaust opens it pushes exhaust into # 1 which is closing
im not really sure what im talkin about so someone please correct me
im not really sure what im talkin about so someone please correct me
Im guessing twin turbo is only better if you run it like this..
sequential stock setup of a 2jz
Initially all of the exhaust is routed to the first turbine for reduced lag. This resulted in boost and enhanced torque as early as 1800 rpm. Approaching 3500 RPM, some of the exhaust is routed to the second turbine for a "pre-boost" mode, although none of the compressor output is used by the engine at this point. Approaching 4000 RPM, the second turbo's output is used to augment the first turbo's output. As opposed to the parallel mode, the sequential turbos provides quicker low RPM response and increased high RPM boost.
above was taken from http://en.wikipedia.org/wiki/Toyota_Supra
sequential stock setup of a 2jz
Initially all of the exhaust is routed to the first turbine for reduced lag. This resulted in boost and enhanced torque as early as 1800 rpm. Approaching 3500 RPM, some of the exhaust is routed to the second turbine for a "pre-boost" mode, although none of the compressor output is used by the engine at this point. Approaching 4000 RPM, the second turbo's output is used to augment the first turbo's output. As opposed to the parallel mode, the sequential turbos provides quicker low RPM response and increased high RPM boost.
above was taken from http://en.wikipedia.org/wiki/Toyota_Supra
Boost Lee;1229656 said:That's it.
figgie for President. :biglaugh:
____
::Short Answer::
|PROS|
Find a good medium-frame single setup, and it'll spool in some cases,
as fast as the stock twins, will be more efficient (won't start choking at high RPM's),
and be much more capable of making big power in the long run.
|CONS|
You no longer get to tell your ricer friends, "I have a twin turbo Supra".
Jeff
they asked if it was twin turbo anyway
... "nope big single.. and yes it is the twin turbo motor..." lol
rshn117;1230375 said:
If you are concerned about exhaust pulse interference with a single turbo, then get a split pulse/twin scroll/divided housing all the same chit:bigthumb:
If you're like me and hate lag, twins are the way to go if your power goals are high enough. But if they are moderate, say 500 RWHP, than a nice single will work best for you.
Gritz;1230615 said:
It only sounds stupid if you don't have the smaller turbo feeding the larger one. In this case people use the smaller turbo to spool up the larger turbo sooner. Diesel twin kits are generally this way. Again stock twins are nice aftermarket twins are nice. Big singles are nice. BUT cfm is cfm! Just because you have two moderate sized turbos doesn't mean they will spool faster than one big single due to only half the cylinders are feeding them. Just because there is two doesn't mean one the equal size of the two won't spool just as fast or have the same top end or amount of power. The only difference would be in the exhaust housing.