single turbo faster than twin turbo?

[gigglesnirt]

i was at a friends party and we were talking about cars, and i mentioned my plans on getting a twin turbo 300z, but he said i should go with a single turbo, because it will be faster, and he gave examples like a 1000hp supra was twin turbo and they made it into a single turbo and got more power, or something like that, im not to sure, but would a single turbo be the better thing to get, or is the twin turbo what i should stay with.

[jbanach77]

one larger turbo is much more efficent than two smaller turbos

[gigglesnirt]

then getting a single turbo would be both cheaper and faster?

[freakonaleash1187]

stock, a twin-turbo will mostly be faster than a single turbo. but if you go with one bigger turbo, you will also most likely have more lag. the bigger that turbo, the more the lag. so if you do 1/4 mile racing, two smaller turbos would probably be better. but if you like to go fast on the highway, a bigger turbo would probably be faster.

[gigglesnirt]

ok thank you

[AcesHigh]

Twin sequential turbos will spool much more quickly than a single large turbo, but will produce less power. It's a tradeoff.

[Zoso]

Well think about this. There are two turbos on the VG30DETT for a reason, same thing with the MKIV GTE, RB26DETT, 13B etc. One turbo to handle low presure, one to handle high. Like someone said already, if you are planning on drag racing, a TT would be better... But if your planning on drag racing, you chose the wrong car anyways. Z's are best for handling the curves. I think a single turbo would be fun, one HUGE kick in would be something. But realistically... Would it fit? Where would it go? There is plenty of room down near the bottom of the bay, hence why they put the turbos down there. But where would the SINGLE fit? The exhaust manifolds would have to be the same length, same path's of flow, it would be hard as hell to fabricate. Has there been a kit made already? Never seen one. But other engines such as the RB, or GTE engine, inline engines, are easy to single turbo, because the engine only has one exhaust manifold. Anyone else have an opinion here? Peace foo's

[ZXTT]

Originally Posted by Zoso

Well think about this. There are two turbos on the VG30DETT for a reason, same thing with the MKIV GTE, RB26DETT, 13B etc. One turbo to handle low presure, one to handle high. Like someone said already, if you are planning on drag racing, a TT would be better... But if your planning on drag racing, you chose the wrong car anyways. Z's are best for handling the curves. I think a single turbo would be fun, one HUGE kick in would be something. But realistically... Would it fit? Where would it go? There is plenty of room down near the bottom of the bay, hence why they put the turbos down there. But where would the SINGLE fit? The exhaust manifolds would have to be the same length, same path's of flow, it would be hard as hell to fabricate. Has there been a kit made already? Never seen one. But other engines such as the RB, or GTE engine, inline engines, are easy to single turbo, because the engine only has one exhaust manifold. Anyone else have an opinion here? Peace foo's

Im pretty sure the turbos in the 300zx are not sequential. TT setups are best used on a V engine config ie a V6 or V8.

[Zoso]

Gotcha. I remember my buddy talking about how they are in fact sequential... Anyone who knows for sure? Peace foo's

[rizzspeed]

they are NOT sequential!!!
You of all ppl, I would of thought, should know that, Zoso!!
the TT is setup as basically 2 engines in the same bay. Hence the dual throttle bodies, dual exhausts, TWIN TURBOS!
Ugh....
sequential means in sequence. One after the other, one feeding the other. if the turbos are not directly connected to each other how can they be sequential?
At least you got one thing right there, Zoso. The MKIV Supra is easily converted to single turbo because the exhaust manifold is located in one spot on one side of the engine, which is inherit to an Inline 6. Because of the V nature of the VG30DETT, a single turbo would prove difficult not impossible, but definitely very difficult. It's been done, but at the cost of a brand new intake manifold, brand new exhaust manifolds and so on. Not impressive and definitely not pretty.

[Zoso]

Haha, shaddap Riz. I didnt think about that, for some reason it slipped my mind that the plenum has two throttle bodies???? WTF, Im going crazy . Well damn, John Penlington single turbo'd his VG35DE... From what I could read, it did NOT look simple at all. I would rather break my arm than even attempt that project. Haha. Peace foo's

[solidtimh]

if you have tons of money, do anything you want. but, from a level headed working class guy, i say stick with the tt. it would be cheaper to get two skyline turbos (which fit like a glove), than to get one huge turbo, and have to deal with all the fabrication. two skyline turbs would be more than enough power.

[Zoso]

... Not exactly. Its a little harder done than said. Would by no means fit like a glove, Personally If I had enough, I would just drop in a damn RB26DETT. My boss is making his 240sx AWD with an R32 GTR drivetrain... Its not all that hard. Peace foo's

[Z_animal]

usable power is what huge single vs twin comes down to. supra's with t-88 are trailer queens, and have no useable hp. the turbo spools at like 6.5krpm. there is one person that i know of that has a single turbo z, joel(pa) on www.twinturbo.net and he made some good numbers. but fast cannot be degsignated by single or twin setup, it's kinda how you wanna use it. furthermore a single on a z while innovative very costly.