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Obayashi Factory Car at Tokyo Auto Salon 2004

Old Mar 20, 2004 | 09:51 AM
  #21  
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Default pic of the hood

pic of the hood
Attached Thumbnails Obayashi Factory Car at Tokyo Auto Salon 2004-tur3.jpg  
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Old Mar 20, 2004 | 09:54 AM
  #22  
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Hell even the stillen supercharger needs an aftermarket hood with a hood scoop. I pretty sure if you have a hood scoop on you SINGLE TURBO MONSTER of a 350Z no one will even think it is any where close to ugly.
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Old Mar 20, 2004 | 10:58 AM
  #23  
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werd
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Old Mar 21, 2004 | 10:49 AM
  #24  
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Originally posted by joust75
2 turbos to share 1 engines heat = less heat.
I don't think so. The exhaust coming off to the twins is the same exhaust that is routed to the single turbo setup, so it shouldn't produce less heat even if it is a twin turbo. If you put the exact same turbo from the twin setup and set it up as a one turbo system, the one turbo should produce less heat. If anything, one huge snail and two PE turbos should produce the same heat.

please correct me if i'm wrong. There must be a reason why these tuners are going with this setup. THERE MUST BE!
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Old Mar 21, 2004 | 01:20 PM
  #25  
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How are they keeping the hood closed? I didn't see any pins, and of course the front latch is gone.

Interesting, but kinda ugly to me. Well, ugly may be the wrong term....complicated.
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Old Mar 21, 2004 | 04:09 PM
  #26  
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I don't think that the JUN car was using anything but a VQ35, not sure where the info came from that it was a VQ30, but the front cover, heads, and cam covers are all unique to the VQ35 and are not interchangeable to be used on the VQ30 block. The pictures are pretty clear showing the 35 parts. With the single turbo, if you want to run big power numbers, then a single is typically the way to go. Each exhaust bank puts out enough energy to spin a smaller turbo, but to run high boost, the efficiency of the turbo is maxed beyond ideal and is whipping the air - creating more heat. A small T25 at 14 lbs can be spinning at 300,000 rpm, and way outside its peak efficiency. A T3/T4 hybrid can produce the same boost at 75,000 rpm. This means less heat and better effficiency, but turbo responds better using the energy of both banks rather than just one. This is the same reason behind single turbo conversions on Supras and GT-R's. Two well matched turbos can produce even better results, but would be much more expensive. The new disco potato turbos JWT is selling for the Z32 is a prime example. Excellent efficiency and design allows the higher boost and power numbers of a large single turbo like the T6 line (700hp), but with better response. Of, course, these turbos run well over a grand apiece.
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Old Mar 21, 2004 | 07:40 PM
  #27  
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Originally posted by Nismobilized
I don't think so. The exhaust coming off to the twins is the same exhaust that is routed to the single turbo setup, so it shouldn't produce less heat even if it is a twin turbo. If you put the exact same turbo from the twin setup and set it up as a one turbo system, the one turbo should produce less heat. If anything, one huge snail and two PE turbos should produce the same heat.

please correct me if i'm wrong. There must be a reason why these tuners are going with this setup. THERE MUST BE!

Can anyone settle this with absolution? He says less heat with a single turbo setup, I say less heat with a dual turbo setup.

I do know that turbos act as a heat sinks. for this reason cat converters on turbos take longer to heat up and function properly.
please correct me if i'm wrong. There must be a reason why these tuners are going with this setup. THERE MUST BE!
I am sure going with a single turbo has nothing to do with less heat.
Here are some reasons I can think of
1. One turbo = more economical, less install hassle (also only one oil line.
2. Can go with one large turbo instead of 2 smaller ones which = better top end boost (but more lag) and greater boost potential.
3. something different to attract attention.

No matter what I think that setup is cool!
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Old Mar 22, 2004 | 08:40 AM
  #28  
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I think its numbuh 2.

Two turbos, like Resolute says, reduces lag and one turbo has more top end boost, as i have seen. (nagata's sick GTRs and Supra- the one powered by a 3S-GTE). Im just repeating this, but thanks a bunch for clearing this up.

Personally, I just love all the attention the Z is getting in Japan. There's so many options now.
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