2 Turbo mod
11-03-04, 12:39 AM
#4
...94% correct.
Originally Posted by SmogSUX
single>twin
Which is the PRECISE reason all higher end japanese cars came from the factory with a single turbo in the mid/late 90's....wait....
11-03-04, 12:44 AM
#5
No money. No love.
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why else would almost everyone want to do a single turbo conversion on most of those cars??? HMMM???? People pay so much money for single turbo cuz its better 
11-03-04, 12:48 AM
#6
...94% correct.
Originally Posted by SmogSUX
why else would almost everyone want to do a single turbo conversion on most of those cars??? HMMM???? People pay so much money for single turbo cuz its better
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11-03-04, 01:03 AM
#8
...94% correct.
right....power....cuz EVERYONE wants power cuz EVERYONE drag races and NO ONE has any concern for tight track or autoXing or any of that crap...
...
What would be the point of a twin setup? As opposed to a single large turbo, a twin setup can spool faster (depending on a number of things) and can make every bit as much power as a single (also depending on a number of things) but mostly a twin setup can be configured to power the car in sequential form...ie one turbo is fully spooled lower in the band, making power LOWER in the band.
The RX-7 is NOT a GT car and should NOT be configured as such.
...some people seem to always want to turn what they got into something else......get a supra...
...What would be the point of a twin setup? As opposed to a single large turbo, a twin setup can spool faster (depending on a number of things) and can make every bit as much power as a single (also depending on a number of things) but mostly a twin setup can be configured to power the car in sequential form...ie one turbo is fully spooled lower in the band, making power LOWER in the band.
The RX-7 is NOT a GT car and should NOT be configured as such.
...some people seem to always want to turn what they got into something else...
...get a supra...
11-03-04, 01:31 AM
#10
S4 now S6 soon...
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It's true no one gives the twin setup enough credit. It's brilliant really, taking a peaky motor(let's face it rotaries would rather make tons of top end hp than mid-low torque) and using two forced induction items that are also peaky by nature and creating a very smooth, usable powerband. To a point the twin setup is the best way you can go. I'd love nothing more than a BNR stage 3 FD...
Come to think of it... it's the best to a point, and then after a certain point too. You can only make turbos so big. Eventually you'll have to double up!
Come to think of it... it's the best to a point, and then after a certain point too. You can only make turbos so big. Eventually you'll have to double up!
Last edited by FDreaming; 11-03-04 at 01:44 AM.
11-03-04, 02:08 AM
#11
Rotary Freak
Originally Posted by Makenzie71
Better for what?
Also single turbos are better for making more power. How many 10 second FDs do you see out there running on stock twins? How many twin turbo upgrade kits are there out there? Why does everyone in the Supra world opt for the big single conversions rather than the HKS twin upgrade?
If you upgrade to two larger turbochargers you have the same amount of exhaust gas driving two turbochargers. It's a lot easier to stick one moderately sized single in there instead. Saves weight, spools and makes boost about as quickly, and you always have the option to upgrade to even more.
Originally Posted by Makenzie71
Which is the PRECISE reason all higher end japanese cars came from the factory with a single turbo in the mid/late 90's....wait....
11-03-04, 02:38 AM
#12
...94% correct.
Originally Posted by snub disphenoid
Better for a lot of things. For one, it's better for autocross. You can make as much power from a quick spooling single ball bearing turbo while saving the weight from a virtually useless sequential twin setup. There are single kits for FDs that hit peak boost by 4k and honestly if you can't keep your car between 4k and 8k when you're autocrossing, you've got some issues with how you drive.
Also single turbos are better for making more power. How many 10 second FDs do you see out there running on stock twins? How many twin turbo upgrade kits are there out there? Why does everyone in the Supra world opt for the big single conversions rather than the HKS twin upgrade?
If you upgrade to two larger turbochargers you have the same amount of exhaust gas driving two turbochargers. It's a lot easier to stick one moderately sized single in there instead. Saves weight, spools and makes boost about as quickly, and you always have the option to upgrade to even more.
The 300ZX and the 3000GT were twin turbo because they're V6es you dip. Are the fastest RX7s twin turbocharged? How about the Jun Supra, is that TT too? How about that triple turbocharged Supra, that was a real monster car with fantastic response, right? Don't give that argument because honestly it's void.
Also single turbos are better for making more power. How many 10 second FDs do you see out there running on stock twins? How many twin turbo upgrade kits are there out there? Why does everyone in the Supra world opt for the big single conversions rather than the HKS twin upgrade?
If you upgrade to two larger turbochargers you have the same amount of exhaust gas driving two turbochargers. It's a lot easier to stick one moderately sized single in there instead. Saves weight, spools and makes boost about as quickly, and you always have the option to upgrade to even more.
The 300ZX and the 3000GT were twin turbo because they're V6es you dip. Are the fastest RX7s twin turbocharged? How about the Jun Supra, is that TT too? How about that triple turbocharged Supra, that was a real monster car with fantastic response, right? Don't give that argument because honestly it's void.
...you, my friend, have no idea how to read......
Originally Posted by Makenzie71
(depending on a number of things)
11-03-04, 02:40 AM
#13
Rotary Freak
Originally Posted by Makenzie71
...you, my friend, have no idea how to read......
11-03-04, 02:50 AM
#14
...94% correct.
Originally Posted by snub disphenoid
Or you just can't find where twins are better than a properly applied single, whichever way you want to look at it.
JZA70 Toyota Supra Turbo used twin CT-12A's in a true twin configuration to power it's 2.5 liter 1jz-GTTE engine. This setup was FAR superior to the MA71's single CT-26 attached to the 3.0 liter 7m-GTE engine. The JZA71, roughly the same weight of the MA71, put down 40 more whp and had a much smoother and linear power band. The JZA70 manifold and CT-12A's weighed less than the MA71's mani and CT-26. The JZA71 had is far more capable at the track than the MA71, even if the JZA70 is mated with the JZA80 head (effectively making it a 3.0 liter 1.5JZ).
There's one.
You also can not find where a single is better than a set of propperly applied twins, whichever way you look at it.
11-03-04, 03:21 AM
#15
Rotary Freak
Originally Posted by Makenzie71
JZA70 Toyota Supra Turbo used twin CT-12A's in a true twin configuration to power it's 2.5 liter 1jz-GTTE engine. This setup was FAR superior to the MA71's single CT-26 attached to the 3.0 liter 7m-GTE engine. The JZA71, roughly the same weight of the MA71, put down 40 more whp and had a much smoother and linear power band. The JZA70 manifold and CT-12A's weighed less than the MA71's mani and CT-26. The JZA71 had is far more capable at the track than the MA71, even if the JZA70 is mated with the JZA80 head (effectively making it a 3.0 liter 1.5JZ).
There's one.
You also can not find where a single is better than a set of propperly applied twins, whichever way you look at it.
There's one.
You also can not find where a single is better than a set of propperly applied twins, whichever way you look at it.
Also, have you ever heard of drag racing? Also, have you ever heard of road racing? In both cases a single turbo setup will give you greater peak power over an acceptable power band. How many twin turbo FDs do you see that can hug the bumper of a 550rwhp Z06? How many ten and nine second twin turbo supras do you see? There's two cases.
Last edited by snub disphenoid; 11-03-04 at 03:23 AM.
11-03-04, 11:20 AM
#16
...94% correct.
Originally Posted by snub disphenoid
There is such a thing as an aftermarket, you know. Most people who are serious about their cars don't buy parts that came stock on the car. How much does a stainless manifold and an SP57 turbo weigh compared to the dual CT-12As?
Also, have you ever heard of drag racing?
Also, have you ever heard of road racing?
...
In both cases a single turbo setup will give you greater peak power over an acceptable power band.
How many twin turbo FDs do you see that can hug the bumper of a 550rwhp Z06?
How many ten and nine second twin turbo supras do you see? There's two cases.
...
Last edited by Makenzie71; 11-03-04 at 11:24 AM.
11-03-04, 01:09 PM
#17
a properly Engineered setup of two turbos can and will do just as well in the peak end of a single turbo and will do better down low.
The only deciding factor is drag racing because the cost to get that top end is less than the cost to get the same top end out of a twin.
However in road racing drifting auto x .. etc. the cost is worth it for a engineered setup for twins because they are better all over the power band.
Don't trust everything you read if you really want to argue that a single is better all the time over twins then you should go to school and take some classes that might help you to understand. (not knocking you)
The only deciding factor is drag racing because the cost to get that top end is less than the cost to get the same top end out of a twin.
However in road racing drifting auto x .. etc. the cost is worth it for a engineered setup for twins because they are better all over the power band.
Don't trust everything you read if you really want to argue that a single is better all the time over twins then you should go to school and take some classes that might help you to understand. (not knocking you)
11-03-04, 04:17 PM
#21
Rotary Freak
Originally Posted by Makenzie71
I thought you were talking about stock turbo setups compared to stock turbo setups....not stock turbo setups compared to aftermarket turbo setups. That makes a lot of sense seeing as how it's not possible at all to upgrade twin turbo setups....
Originally Posted by Makenzie71
Have you heard of autoX and real track racing? You know, the stuff the RX-7 was designed to do?
Originally Posted by Makenzie71
Yeah...which this doesn't support your claim......
...
Originally Posted by Makenzie71
Which will benefit you how when your engine is all over the band? Peak makes a ****.
Originally Posted by Makenzie71
Last time I checked the Z06 had 405hp at the crank, and just about any BPU RX-7 can hang with them...
Originally Posted by Makenzie71
Exactly...because drag racing is the ONLY kind of racing......
...
11-03-04, 07:05 PM
#25
...94% correct.
Originally Posted by snub disphenoid
Yes it is possible, but it costs a lot of money and takes lots of time. You said single setups are inferior when that's obviously not the case.
Oh, so that's why the fastest road racing RX7s are single turbo? Unless you drive like a douche, you can keep your car in boost.
No, it does, because the fastest road racing RX7s are single turbo.
I was saying that it makes more power, most of the time you're in boost from 4-8k, and you can't say that's peaky.
...
I was referring to Damian DelaHuerta's TO4S powered CYM FD hugging the bumper of a 550rwhp PREPARED road racing Z06.
No, it's not, but that's one of the many places where a single turbo is a better idea.
Also, the fastest stock twined RX-7 runs 10.98 at sea level, with no NO2.
https://www.rx7club.com/time-slips-dyno-121/stock-twins-running-11-70-5280ft-324173/ = 11.70, stock twins
https://www.rx7club.com/members/fastrx7man-6738/ = 11.70, stock twins
https://www.rx7club.com/members/boostn7-314/ = 11.56 & 10.98, both on stock twins
https://www.rx7club.com/attachment.p...&stc=1&thumb=1 = BNR twins + 12psi
http://wutangclan21.tripod.com/dyno = pettit twins @ 17psi
...just to name a few...
And YET ANOTHER THING...the FASTEST RX-7 in the world has MORE THAN ONE TURBO.