1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Turbo Question.

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Old Jul 14, 2004 | 12:06 PM
  #1  
robotstile's Avatar
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Turbo Question.

Alright... I was wondering... what do you guys think would be better.... Twin turbo, or ball bearing single turbo.

Thanks
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Old Jul 14, 2004 | 05:36 PM
  #2  
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its supposed to do that
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big ol' single will have a higher peak horsepower, but take longer to spool.
twins can be set up to spool almost immediately. and have a smoother torque curve.
iirc

isaac
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Old Jul 14, 2004 | 06:08 PM
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Originally posted by flight_of_pain
big ol' single will have a higher peak horsepower, but take longer to spool.
twins can be set up to spool almost immediately. and have a smoother torque curve.
iirc
The part about singles having higher peak hp only holds true for factory twin turbo setups like the sequential system on the FD. If you look at the quickest rotary drag cars they're all running twin or even tripple turbo setups on 20B's.

In theory, a twin system allows you to use smaller turbos which increases low end response while still having the same power potential as a big single. That being said, there's not much point in doing it at least for a 13B. When you compare the extra weight, complication and cost involved to the slight increase in performance it's not really worth it. Unless it's a 20B or RB26.

Last edited by REVHED; Jul 14, 2004 at 06:10 PM.
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Old Jul 14, 2004 | 06:44 PM
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I think it also depends on whether or not you are going to run a 12A or 13B and what type of port you have. The air flow is important in determining turbo size in my opinion.
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Old Jul 14, 2004 | 09:40 PM
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Dude whats an RB26? Please enlighten me.
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Old Jul 14, 2004 | 09:51 PM
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Originally posted by tjgosurf
Dude whats an RB26? Please enlighten me.
Nissan straight six.
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Old Jul 14, 2004 | 09:52 PM
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Skyline?
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Old Jul 14, 2004 | 09:53 PM
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yes
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Old Jul 14, 2004 | 09:56 PM
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When i become old and rich im going to buy every skyline i can and rice it out.

yeah im jealous because i cant have one. But it would just be too hard in the drive thru to be feasiable.
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Old Jul 15, 2004 | 09:33 PM
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Thanks to all.
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