[Diy_efi] Compressor "surge ring"

[Toyota Supra]

i've always been under the impression, that is cast into the compressor 
housing

-j





From: Mark <flamindakman at yahoo.co.uk>
>Reply-To: List for general do-it-yourself EFI talk <diy_efi at diy-efi.org>
>To: List for general do-it-yourself EFI talk <diy_efi at diy-efi.org>
>Subject: Re: [Diy_efi] Compressor "surge ring"
>Date: Fri, 31 Jan 2003 07:58:34 -0800 (PST)
>
>
>I'm not entirely positive on this, but thought I'd throw it out there in 
>case it helps ... It looks to me that it may be just that (an 'anti-surge' 
>ring) ...  I think it is just a venturi type of restriction aimed at 
>increasing the incoming air velocity, resulting in an increased stangnant 
>pressure and an increased Net Postive Suction Head (NPSH) .. resulting in 
>less surge. .. the downside is that it is a restriction in the intake.  I 
>think a better method of thwarting intermitent surge is to utilize an 
>upstream intake plenum.
>Again, I'm just taking an educated guess on this and could be wrong.
>Regards,
>Mark
>  Grant Beaty <gbeaty at ufl.edu> wrote:In the interest of turning this into a 
>DIY_TURBO list ;) (The out-of-print
>books on turbos I've ordered still haven't gotten here...)
>
>Anyone ever see something like this:
>http://www.dsmtimes.org/images/products/fp305.jpg
>
>Someone at Forced Performance (DSM turbo maker, 2L engine) mentioned they
>needed this to prevent surge at boost >= 15 psi, at RPMs > 5000.
>
>Does anyone know exactly how this works, and if there are any drawbacks?
>
>Thanks for any help,
>Grant Beaty
>
>
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