[Diy_efi] "Wet" Manifold Questions

Stephen Andersen SAndersen at advan-tek.com
Thu May 16 14:12:42 GMT 2002


If all I wanted to do was modify and maximize my own car, that
would be great.  My ultimate goal is to develop a kit which 
I can market and sell, if I can ever get there.

I would probably end up with a Stage I and Stage II kind
of setup with different boost and compression ratio for 
different power levels.

I am convinced that intercoolers "really work" even on low-boost
applications...

Steve


> -----Original Message-----
> From: diy_efi-admin at diy-efi.org [mailto:diy_efi-admin at diy-efi.org]On
> Behalf Of Tom Sharpe
> Sent: Thursday, May 16, 2002 9:51 AM
> To: Diy_efi at diy-efi.org
> Subject: RE: [Diy_efi] "Wet" Manifold Questions
> 
> 
> IMHO, the problem is the 10-10.5:1 CR. Drop it to 8.5 and turn up the 
> boost. Intercoolers really work then. For endurance 
> applications, find the 
> largest intercooler you can fit. 
> Turbos tend to have an rpm range, from X to 2-2.2X. For 
> example 3000 to 
> 6000-6500 rpm. This can be tweaked w/ waste gates. Positive 
> displacement 
> blowers tend to produce the same boost at all RPMs. Guage 
> boost tends to 
> rise as internal restrictions increase (VE decrease). 
> 8000 rpm high boost turbo motors tend to have really soggy low rpm 
> performance from the big cam which aggrivates the lack of boost. 
> Build a 2.5L 8.5cr 6000 rpm turbo motor w/15 lbs boost, water 
> inj, and 300 
> hp on 89 octane.  
> 
> 

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