turbo talk................
#17
Pole Position
Thread Starter
Join Date: Mar 2004
Location: Florida
Posts: 296
Likes: 0
Received 0 Likes
on
0 Posts
pardon...............
why would it take for ever to spool the big turbo?
the only reason for the big turbo will be to give it a bigger top end, so if it does'nt spool untill 5k rpm thats cool.
what i was thinking as long as yopu don't use a tiny turbo in front of the big one the exaust that comes out should have enough pressure to spool the second one.
and shuld'nt the waste gate on the first turbo prevent it from over spooling while sending the unused exaust to the second turbo.
i'm not arguing i'm just trying to understand why it would'nt work???
the only reason for the big turbo will be to give it a bigger top end, so if it does'nt spool untill 5k rpm thats cool.
what i was thinking as long as yopu don't use a tiny turbo in front of the big one the exaust that comes out should have enough pressure to spool the second one.
and shuld'nt the waste gate on the first turbo prevent it from over spooling while sending the unused exaust to the second turbo.
i'm not arguing i'm just trying to understand why it would'nt work???
#19
the way i see it is if the big one spools at 5k but it takes till 3k to have full bost on the small one then you divert the extra gas from the waste gate into the big one it want spool untill 7-8k
oops thats past redline and useless
oops thats past redline and useless
#20
Pole Position
Many good points have been covered with regards to the extra complication, hassle, and HEAT in a setup like this.
If a particular type of squential forced induction to reduce lag is what we're bench racing about, consider a twincharged super/turbocharger setup.
This has actually been done and is much less impractical. Your supercharger gives you your low end on the front of the motor, and your big turbo takes over on the back end.
Sttill a pain in the ***, tho.
If a particular type of squential forced induction to reduce lag is what we're bench racing about, consider a twincharged super/turbocharger setup.
This has actually been done and is much less impractical. Your supercharger gives you your low end on the front of the motor, and your big turbo takes over on the back end.
Sttill a pain in the ***, tho.
#21
Pole Position
Thread Starter
Join Date: Mar 2004
Location: Florida
Posts: 296
Likes: 0
Received 0 Likes
on
0 Posts
twincharging is a *****, i cheaked it out a couple months ago, it's not for me.
but i see what you guys are saying, i'll go try to think of some other impossible thing to do to a car
it was just an idea anyway.
but i see what you guys are saying, i'll go try to think of some other impossible thing to do to a car
it was just an idea anyway.
#22
how many people on here have upgraded twin turbo set-ups, all i see are big single turbo set-ups, i plan on running the hks gt2835 twin turbo set up, it is good for around 700 whp, and if i decide i need more power a twin gt3540 set-up will send me over 1000whp. twin turbos rock
#23
Originally Posted by sc3boost
twincharging is a *****, i cheaked it out a couple months ago, it's not for me...
Originally Posted by FortuneSC
how many people on here have upgraded twin turbo set-ups, all i see are big single turbo set-ups, i plan on running the hks gt2835 twin turbo set up, it is good for around 700 whp, and if i decide i need more power a twin gt3540 set-up will send me over 1000whp. twin turbos rock
Last edited by sc300tt; 06-28-05 at 11:14 PM.
#24
Pole Position
Thread Starter
Join Date: Mar 2004
Location: Florida
Posts: 296
Likes: 0
Received 0 Likes
on
0 Posts
hey i don't mean to change the subject but i don't want to start a whole new thread for this.
i just found a deal where i get a supra front clip(1jz) with a 5speed tranny for $2500.00 shipped to my door in f.t lauderdale.
problem is i heard that everything is different on a supra clip compared to a soarer clip.
did any of you guys use a supra clip instead of a soarer for your swap, if you did or know someone who did pm me please, i don't want to loose the deal.
sorry for changing the topic i don't think this question deserved another thread.........
i just found a deal where i get a supra front clip(1jz) with a 5speed tranny for $2500.00 shipped to my door in f.t lauderdale.
problem is i heard that everything is different on a supra clip compared to a soarer clip.
did any of you guys use a supra clip instead of a soarer for your swap, if you did or know someone who did pm me please, i don't want to loose the deal.
sorry for changing the topic i don't think this question deserved another thread.........
#25
1) thats so much weight in turbos.
2) have fun fitting two turbos and a t88h.
3) with advances in turbos a ball bearing single can cut down on lag a lot.
4) another thing people tend to forget is that your mani plays a HUGE role in how much lag you have. a properly designed mani can cut down spool by a few hundred rpms easy.
5) to setup a sequential TT system thats not stock would be a huge PITA. Not only do you have to fit everything in the engine bay you need to figure out some sort of prespool if you want any sort of linear powerband. There's a reason you dont see sequential twin turbo setups much anymore and thats complication.
2) have fun fitting two turbos and a t88h.
3) with advances in turbos a ball bearing single can cut down on lag a lot.
4) another thing people tend to forget is that your mani plays a HUGE role in how much lag you have. a properly designed mani can cut down spool by a few hundred rpms easy.
5) to setup a sequential TT system thats not stock would be a huge PITA. Not only do you have to fit everything in the engine bay you need to figure out some sort of prespool if you want any sort of linear powerband. There's a reason you dont see sequential twin turbo setups much anymore and thats complication.
#26
[/QUOTE]Umm....A single turbo setup will make just as much power with the same spool characteristics as big HKS twins, for far less money. The only advantage the twins offer is in the "bling" dept, which they do quite well.[/QUOTE]
i am aware that big singles can produce just as much, in most cases more, than a twin set-up, and in the "bling" dept. they have a huge advantage. you used to have a twin turbo set-up didnt you?, and now you run a single set-up, i know you switched for a reason and that you know what your talking about, i was just saying that if you want to be different do a twin set-up cause you just dont see too many around anymore, mostly big single turbos. i want to do a twin set-up even though it costs more, i think the hks gt2835 kit is like $8000 now isnt it? not calling you a liar, i just find it hard to believe that a big t88h turbo will spool just as quickly as two smaller gt2835s
i am aware that big singles can produce just as much, in most cases more, than a twin set-up, and in the "bling" dept. they have a huge advantage. you used to have a twin turbo set-up didnt you?, and now you run a single set-up, i know you switched for a reason and that you know what your talking about, i was just saying that if you want to be different do a twin set-up cause you just dont see too many around anymore, mostly big single turbos. i want to do a twin set-up even though it costs more, i think the hks gt2835 kit is like $8000 now isnt it? not calling you a liar, i just find it hard to believe that a big t88h turbo will spool just as quickly as two smaller gt2835s
#27
Originally Posted by sc3boost
so get this, use three turbos but keep the traditional twin set up @14psi(something kinda small), and the exaust that runs out the twins to the route them into a T76 or T88 set to(10-15)psi, so you end up with 24-30psi.
If you run twins or more than one turbo heres what you'll generally see. (I'm just making number up here, but you should get the idea)
Turbo 1 running (lets say) 8psi at 20 lbm/min
Turbo 2 running the same 8 psi and the same 20 lbm/min
Final results will be 8 psi and 40lbm/min.
Now if you run them in series or parallel is where you are going to see differences in pressures in turbos but once full boost is attained I'll bet good money they run the same pressures.
#28
Pole Position
Join Date: Jul 2003
Location: New Jersey
Posts: 277
Likes: 0
Received 0 Likes
on
0 Posts
Basically you guys are talking about compound turbo charging, for the most part. I did see some other posts about sequential...and did I see someone mention 3 turbos?!
Diesel guys have been doing this for years:
http://www.piersdiesel.com/DodgeTwins.htm
And search on supraforums...there is a thread PAGES long on this...
Diesel guys have been doing this for years:
http://www.piersdiesel.com/DodgeTwins.htm
And search on supraforums...there is a thread PAGES long on this...
#29
caterpillar manufactures diesel twin turbos also, i used to work at a mack truck dealership in the body shop and we had a kenworth come in that had a cat twin turbo engine in it with a set up just like the one on that website where the downpipe from the first turbo leads into the turbine inlet of the second turbo, its a bizzar set-up i think
#30
Originally Posted by FortuneSC
i am aware that big singles can produce just as much, in most cases more, than a twin set-up, and in the "bling" dept. they have a huge advantage. you used to have a twin turbo set-up didnt you?, and now you run a single set-up, i know you switched for a reason and that you know what your talking about, i was just saying that if you want to be different do a twin set-up cause you just dont see too many around anymore, mostly big single turbos. i want to do a twin set-up even though it costs more, i think the hks gt2835 kit is like $8000 now isnt it? not calling you a liar, i just find it hard to believe that a big t88h turbo will spool just as quickly as two smaller gt2835s
Last edited by sc300tt; 06-29-05 at 11:47 AM.