Is This Possible?

[aquariuz6]

Hey I heard a stupid quote the other day.

I was at a car shop the other day... one of those autobarn ones I think.

Anyways I overheard this guy and he was going on about his car so much to the customers.

He was saying that he owns a R33 GTR that has over 350rwkw on it. The funny thing is that he was saying all these things to these customers that were after some parts for their skyline.

He claimed that he has two different sized turbos on his car. One bigger one and a smaller one. Twin turbo?

And not only that he was claiming that he just finished putting extractors in his car?

First of all I dont think its possible to put extractors on a turbo car right?

And second, is it possible to run a twin turbo setup but to have 2 different size turbos say a 2530 and a gt30?

I just couldn't believe what I was hearing.

Any comments?

[Mandingo]

He has no f**king idea Ill tell ya that now

[Omurru]

It's an autobarn guy none of them know anything ok well some of them do maybe 1 or 2 but they are few and far between

[paulr33]

its possibly. likely no, possible yes

subaru b4 twin turbo has two turbos different sizes

[GTAAAH]

the big and small turbo thing works, i thought the twin turbo rz supra's ran them

[Mark-R33]

yer smaller 1 to spool up early in the rev range and the bigger one for higher in the rev range, pretty sure 300zx hav different sized ones

[markimak]

Legacy and B4 run the sequential Twin turbo setup and so do Supras and Late model VR4s. the sequential setup is designed to eliminate lag and give more usable torque and constant boost if possible. one spools up then the other kicks in later on. say the first turbo is small and produces boost from 2000-5000rpm when high enough the small turbo dies off and the big one kicks up and holds her to redline. whats stupid is..

he claims to have a GTR. GTRs are known for ther torque range mid-high. The GTR can rev to 9000rpm why would u have a smaller sequential turbo for low down when a GTR around a track wont go below 6000rpm? quite pointless .. GTRs arnt doughy downlow anyway.

Extractors are mainly tuned lengths of exhast piping dsigned to maximise flow...

[7yphon]

It could be true and if it is he has shit loads of dosh I looked into this for the rb20 and it would cost atm over 20K for the setup through WTF Auto who know loads about this kind of setup just look at there seq TT Supra.

Also The Rx7 S7 come out with this sorta setup dont know if they where difrent sized turbo's tho.

[SiR_RB]

It could be true and if it is he has shit loads of dosh I looked into this for the rb20 and it would cost atm over 20K for the setup through WTF Auto who know loads about this kind of setup just look at there seq TT Supra.

Also The Rx7 S7 come out with this sorta setup dont know if they where difrent sized turbo's tho.

yeh the RX7 series 6 (i think) has a Bi- Turbo setup, small one for quick spooling, and a bigger one for top end.

[SECURITY]

i thought the TT rx7's were staged, not sequential.

[aquariuz6]

Hmm interesting to hear that its possible to run a twin turbo setup with 2 different size turbo's.

I wonder if anyone has ever tried it on a skyline before?

If you have, please post details.

So its basically the same theory as running a supercharger and a turbo at the same time right? I wonder which combo would be more stronger?

[T04GTR]

cool. glad its not me your on about

[qikstagea]

have to laugh if he was a forum member and stumbled into this post... lol

[aquariuz6]

have to laugh if he was a forum member and stumbled into this post... lol

hahahah

[frankxinyu]

sounds like a f**kwit to me.

u sure he is not 15??

[Mandingo]

i thought the TT rx7's were staged, not sequential.

RX7 is one exhaust housing and 2 turbine wheels. and it sucks arse

Whats sad is this guy is out raping a 33 GTR somewhere blah someone carjack him

Edited August 3, 2006 by Flipmo

[Thunderbolt]

Extractors - Headers - Exhaust manifold. They are all pretty much the same thing and that is to take gases out of the cylinder. Whether it connects to a turbo or a exhaust is not that important.

As for Twin Turbo setup, definately possible but question would be why would you bother going to the effort and expense of doing that, when a normal twin turbo or single turbo setup would suffice.

[rob82]

its possibly. likely no, possible yes

subaru b4 twin turbo has two turbos different sizes

And the B4 was absolutely shite to drive massive dead spot whre the turbo's changed over. Three boost control solenoids from memory 2 wategate control and 1 exhaust valve. Dont get me started on the series six my boss used to tune the factory managment, there is about 24 different boost maps for every operating parameter you can think of.

Have thought about it on a skyline but the costs outweight the benefits. Plus there are a heap of other parameters to consider. My thinking is that if OE cant get it right then aftermarket has little chance!

[The Dan]

I think the TT supras run the same size turbos. They are just gated differently.

[rb26s13]

the big and small turbo thing works, i thought the twin turbo rz supra's ran them

yeh the RX7 series 6 (i think) has a Bi- Turbo setup, small one for quick spooling, and a bigger one for top end.

supras run the exact same sized turbo's how ever all exhaust gas flows to one turbo to start up with than change over point (around 4000rpm from memory) and both of them kick in..

same with the rx7's didnt take much notice.. but they are puny little things stock gtr turbos next to them look like gt30's same sort of setup as the supra uses.. noticed it to be more agressive on the rx7 tho.. from memory the dyno sheet jumped 60rwkw in the matter of a couple hundred rpm if that ill see if i can dig the dyno sheet up from somewere