2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Centrifugal Supercharger Vs. Turbocharger

Old Apr 25, 2005 | 10:03 PM
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Cool Centrifugal Supercharger Vs. Turbocharger

Which do you recommend on a 13B? Centrifugal Supercharger or Turbocharger?

Also, where could I find a nice carbon fiber hood for my FC?

Thanks,
iSP33D-for-J3SUS
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Old Apr 25, 2005 | 10:06 PM
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TUrbo! ANd U Can FiNd Teh Hood On ebay ........Try to get teh VIS one
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Old Apr 25, 2005 | 10:09 PM
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Originally Posted by TurboSE
TUrbo! ANd U Can FiNd Teh Hood On ebay ........Try to get teh VIS one
Quick search on eBay... only Gen3 hoods came up...
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Old Apr 25, 2005 | 10:10 PM
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Its all depends on what your all about for either set up. And for a hood try out http://www.speedmachineperformance.com for a carbon fiber hood.
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Old Apr 26, 2005 | 09:00 AM
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Cool

Originally Posted by Jager
Its all depends on what your all about for either set up. And for a hood try out http://www.speedmachineperformance.com for a carbon fiber hood.
Nice hood, thanks for the link.

Well, I'm all about cruisin' but I'd like to drag my rx on occassion, which would be best for that? (in your opinion)

~ DarkATi
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Old Apr 26, 2005 | 09:08 AM
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My opinion turbo is better, but i've never ridden in a supercharged rx-7 so i can't exactly compare.

Do a bit more of a search, there are several threads of this nature, and i'm sure you will find good info.

-Justin
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Old Apr 26, 2005 | 10:56 AM
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It'll be easier to turbo the car I'd think, and cheaper too. There's alot more info on turboing an NA than supercharging one, especially with a centrifugal blower. Turbo's are also alot cheaper. I looked into it a while back and a vortech supercharger alone runs around $2000 US for a decently sized one. That said, you can keep the exhaust intact, saving funds. You'll need to budget for an intercooler, piping, fuel upgrades, some sort of engine management, TII upper intake manifolds (I've read that the VDI sucks for forced induction), and if you go for high power a TII driveline would be in order. It's been said many times before, it's cheaper and easier to sell the NA and buy a TII, or if you really want you can do a swap. A turbo will give more power for any given boost level assuming they have comperable specs, and it'll give better response, as the supercharger only boosts at high rpm.
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Old Apr 27, 2005 | 06:15 AM
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Originally Posted by Black91n/a
It'll be easier to turbo the car I'd think, and cheaper too. There's alot more info on turboing an NA than supercharging one, especially with a centrifugal blower. Turbo's are also alot cheaper. I looked into it a while back and a vortech supercharger alone runs around $2000 US for a decently sized one. That said, you can keep the exhaust intact, saving funds. You'll need to budget for an intercooler, piping, fuel upgrades, some sort of engine management, TII upper intake manifolds (I've read that the VDI sucks for forced induction), and if you go for high power a TII driveline would be in order. It's been said many times before, it's cheaper and easier to sell the NA and buy a TII, or if you really want you can do a swap. A turbo will give more power for any given boost level assuming they have comperable specs, and it'll give better response, as the supercharger only boosts at high rpm.
I thought it was the other way around? Superchargers boost at low end and Turbo's boost at high end....
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Old Apr 27, 2005 | 07:07 AM
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Turbos 0WNz j00...


-Ted
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Old Apr 27, 2005 | 07:21 AM
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heres a bit of info from superchargeronline.com

The biggest drawback of the centrifugal supercharger is it's inability to make high levels of boost at low engine rpms. Typically, a centrifugal supercharger will make it's maximum (quoted) boost at the engine's redline rpm and nearly nothing at 1500-2000 engine rpm. Boost builds exponentially with engine rpm, meaning that boost comes on very quickly in the upper half of the powerband. While this normally isn't a problem for lighter cars with manual trannsmissions, it poses a significant problem to heavier vehicles, towing vehicles, or vehicles with automatic transmissions. If you have a truck, towing vehicle, or an automatic transmission, you may want to consider a screw-type supercharger, which makes full boost as low as 1500 engine rpm.
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Old Apr 27, 2005 | 09:24 AM
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I would personally go with a turbo bc of its cost, power potential, and ease of installation. www.1300cc.com (SonicRat on the board) is in the processing of releasing a turbo kit for the N/A:

https://www.rx7club.com/showthread.p...ight=turbo+kit

There are also about 8 million threads on how to custom fab a turbo setup an N/A.
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Old Apr 27, 2005 | 10:52 AM
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I think I'll be turbocharging...

Thanks for the info, everyone.
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Old Apr 27, 2005 | 12:31 PM
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Also you'll be hard pressed to find a centrifugal blower that's a good match for the 13B, even the smallest vortech doesn't offer us much since we're almost on on the surge line with it.
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