Forced Induction Supercharger/Turbocharger

Forced induction with high compression

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Old Apr 30, 2006 | 02:53 PM
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Honda Hunter's Avatar
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Forced induction with high compression

With a static CR of 12.23:1, DCR at 9.01:1 could a turbo or supercharger be done as long as the boost is kept low on the street, alot of timing pulled and a good tune or would it just be a ticking time bomb no matter what even with forged internals?
Old Apr 30, 2006 | 03:25 PM
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Re: Forced induction with high compression

No, the bomb wouldn't tick, it would knock.
Old Apr 30, 2006 | 03:44 PM
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Re: Forced induction with high compression

Couldnt be addressed by pulling alot of timing with less than 8lbs?
Old Apr 30, 2006 | 04:19 PM
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Re: Forced induction with high compression

with a dynamic ratio at 9:1, you are pushing the limit of pump gas even normally aspirated. I don't see any amount of band-aiding with timing or reducing boost to 8 PSIG that will let the engine live with pump gas.
Old Apr 30, 2006 | 06:09 PM
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Re: Forced induction with high compression

no, unless you run straight methonal as a fuel
Old Apr 30, 2006 | 07:05 PM
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Re: Forced induction with high compression

Originally Posted by Honda Hunter
With a static CR of 12.23:1, DCR at 9.01:1 could a turbo or supercharger be done...?

Can you get E85 in your area and are you willing to install a new fuel system?
Old Apr 30, 2006 | 07:23 PM
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Re: Forced induction with high compression

Originally Posted by LameRandomName
Can you get E85 in your area and are you willing to install a new fuel system?
New fuel system as in getting a fuel cell etc?
Old May 1, 2006 | 04:46 PM
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Re: Forced induction with high compression

Originally Posted by Honda Hunter
New fuel system as in getting a fuel cell etc?
Yeah. Everything from cell to injectors, plus a computer to run the injectors. Unless you use mechanical injection, which you probably don't want to do.

You can run high compression with alcohol, partially because of the octane and partially because it runs so cold.
(If I recall correctly, the change of state from liquid to vapor sucks up a LOT of heat. If I am not remembering correctly, hopefully someone will speak up.)

Alcohol is normally a PITA to run on the street, but the 15% gasoline content of E85 makes it a lot easier.

Last edited by LameRandomName; May 1, 2006 at 06:16 PM.
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