3.0T Vs 2.5Bi-T

dcrusupra · 08-13-2006, 03:05 AM

A big single turbo is usually faster in the end. Thats y most of the MKIV guys usually go single.

Supra2NR · 08-13-2006, 09:44 AM

question about twins

are the inline turbos the same size?
if not which one is bigger the front or back?
shouldnt they make a small and a big one

and does any company started making those variable turbos
bmw has developed that technology
it a big turbo with movable fins around the turbines
which closes in low speeds/rpm and opens in high speeds/rpm
so in low speeds it can spool up quickly without lag
and in high speeds it wont choke on exhaust

ZauggIt1 · 08-13-2006, 10:20 PM

Quote:

Originally Posted by Supra2NR

question about twins

are the inline turbos the same size?
if not which one is bigger the front or back?
shouldnt they make a small and a big one

and does any company started making those variable turbos
bmw has developed that technology
it a big turbo with movable fins around the turbines
which closes in low speeds/rpm and opens in high speeds/rpm
so in low speeds it can spool up quickly without lag
and in high speeds it wont choke on exhaust

Yes someone does make these turbos, the only thing is that its for pickups. Banks power makes them , i seen them on an episode of Extreme 4x4. They are just plain out nuts. Im sure someone could figure out how to put it on a supra though.

Supra2NR · 08-13-2006, 10:40 PM

the big question with variable turbos is:
how do you control the fin when opening and closing?
is it electronically controlled?
or by just the mass of air coming in into the turbo?

resurrecta · 08-14-2006, 12:33 AM

maybe we need the exact specs on the variable twin system first. Next step would be getting a downpipe that can handle the pressure level and fittings for the supra. And then we could see what turbo's we can replace variable ones by. Perhaps with electronic tweaks, getting 2 big turbo's in...

frostburn · 08-14-2006, 11:34 AM

two big turbo's is good for the long run but your car will lag off the line like a mother.... it wont feel like ur single right now... but the long run its better... also... im sure the 550 stock injectors could handle the job but u might wanna try 1 step higher.. go 750 or so. ... also u need to upgrade your fuel pump

resurrecta · 08-14-2006, 06:14 PM

I heard about putting 750cc injectors aswell. But if you upgrade the injectors and fuel pump and with other "tiny" tweaks... Could it handle double heavy turbo's in your opinion?

frostburn · 08-14-2006, 08:54 PM

750's will for sure... they can get rather pricey though

ZauggIt1 · 08-15-2006, 01:47 AM

Quote:

Originally Posted by Supra2NR

the big question with variable turbos is:
how do you control the fin when opening and closing?
is it electronically controlled?
or by just the mass of air coming in into the turbo?

I belive its by the air flow, dont know quite how they control it though..

08-13-2006, 03:05 AM	#1
dcrusupra 500whp yet? Join Date: Aug 2005 Location: Plantation, Fl. Posts: 1,052	A big single turbo is usually faster in the end. Thats y most of the MKIV guys usually go single. __________________ New Rebuild My CarDomain

08-13-2006, 09:44 AM	#2
Supra2NR 1000whp postwhore Join Date: Apr 2006 Location: Chi-Town Posts: 1,643	question about twins are the inline turbos the same size? if not which one is bigger the front or back? shouldnt they make a small and a big one and does any company started making those variable turbos bmw has developed that technology it a big turbo with movable fins around the turbines which closes in low speeds/rpm and opens in high speeds/rpm so in low speeds it can spool up quickly without lag and in high speeds it wont choke on exhaust __________________ http://www.myspace.com/supra_2nr Into Bikes now,, apparently the supra couldnt kill me, so my zx6 might lol

08-13-2006, 10:40 PM	#4
Supra2NR 1000whp postwhore Join Date: Apr 2006 Location: Chi-Town Posts: 1,643	the big question with variable turbos is: how do you control the fin when opening and closing? is it electronically controlled? or by just the mass of air coming in into the turbo? __________________ http://www.myspace.com/supra_2nr Into Bikes now,, apparently the supra couldnt kill me, so my zx6 might lol

08-14-2006, 06:14 PM	#7
resurrecta Stock Join Date: Aug 2006 Location: Belgium Posts: 19	I heard about putting 750cc injectors aswell. But if you upgrade the injectors and fuel pump and with other "tiny" tweaks... Could it handle double heavy turbo's in your opinion? Last edited by resurrecta; 08-15-2006 at 09:19 PM.

08-14-2006, 12:33 AM	#5
resurrecta Stock Join Date: Aug 2006 Location: Belgium Posts: 19	maybe we need the exact specs on the variable twin system first. Next step would be getting a downpipe that can handle the pressure level and fittings for the supra. And then we could see what turbo's we can replace variable ones by. Perhaps with electronic tweaks, getting 2 big turbo's in...

08-14-2006, 11:34 AM	#6
frostburn 3" Exhaust Join Date: Jun 2006 Location: ontario CA Posts: 128	two big turbo's is good for the long run but your car will lag off the line like a mother.... it wont feel like ur single right now... but the long run its better... also... im sure the 550 stock injectors could handle the job but u might wanna try 1 step higher.. go 750 or so. ... also u need to upgrade your fuel pump

08-14-2006, 08:54 PM	#8
frostburn 3" Exhaust Join Date: Jun 2006 Location: ontario CA Posts: 128	750's will for sure... they can get rather pricey though