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[Svo] Boost Solenoid {4}



As I understood it... With the solenoid bypassed, there's no bleed off
to the atmospere causing the wastegate diaphram to open as soon as 10
psi is pushing on the diaphram. On mine, if you take off all the SVO
crap off and run straight hose, it'll open at the same psi as the older
turbo cars. I thought the 10psi # came from the strength of the spring
in the diaphram.  

I'll admit, it's been a while since I've placed with any of that stuff.
I've been waiting 10k miles for my turbo to die (excuse) but it keeps
going like that battery bunny!

Mike

> -----Original Message-----
> From:	Carl Morris [SMTP:Carl_Morris@StorTek.Com]
> Sent:	Wednesday, October 29, 1997 4:43 PM
> To:	SVO List
> Subject:	[Svo] Boost Solenoid {3}
> 
> Mike Ray wrote:
> > 
> > If you bypass the solenoid you should have 10 lbs of boost with the
> > factory tee on the turbo. With all working correctly, about 14 psi
> When
> > the switch in the Premium position. 10psi in the regular position.
> 
> I don't understand the 85.5+ system very well, but I'm pretty familiar
> with the older system and how it works.  I don't understand how what
> you're saying could work.  Once the solenoid is bypassed, your
> computer
> has no control over the boost...it will always boost to the maximum
> as controlled by the orifice size in the factory tee and the pressure
> required to open the wastegate.  For me this was about 14psi on the
> factory gauge.  I don't see how you can say that you have LESS boost
> with the solenoid bypassed than with everything working correctly.
> The solenoid cannot allow more boost than what's available with it
> bypassed, it can only reduce the boost.
> 
> > Hey Carl, I guess I'm the exception. My 130K `84 has the factory
> setup
> > and still works fine in both positions.
> 
> Cool, that makes two that I've heard of.
> 
> -- 
> Carl_Morris@StorTek.Com