SV: 2.0 16V Turbo

["Roland Johansson" <scirocco@mail.bip.net>]

Hello

By decreasing the CR you can increase boost, as boost increases the amount of air in to the motor increases and for a combustion motor horsepower is higher if you feed the motor with more air and fuel (should be of right ratio).

With to high CR and to high boost you get preignition of the gases and that is BAD for the pistons.

Roland Johansson, Swedish Viking
Scirocco 1,6l RSi -82
Http://hem.passagen.se/toker

----- Ursprungligt meddelande ----- 
Från: Aaron Ness <Aaron@makuta.com>
Till: 'scirocco' <scirocco-l@scirocco.org>
Skickat: den 25 september 1999 17:15
Ämne: RE: 2.0 16V Turbo 


> Is there anything to be gained from decreasing the CR so you can raise the
> boost?  Seems to me you would end up with the same effective compression
> ratio as you have now with higher natural compression and less boost.  The
> hp curve would have a steeper slope, but only because you're not making
> power until the higher rpms, like Gary mentioned.
> 
> Aaron
> '84 Scirocco - Woo-hoo!
> '70 Bug - hibernating
> '87 Nissan truck - Soon to be for sale
> 
> 
> > -----Original Message-----
> > From: Majordomo [mailto:majord@neubayern.net]On Behalf Of Bradley Peet
> > Sent: Friday, September 24, 1999 11:36 PM
> > To: 'Gary Huff'; 'Rich Deede'
> > Cc: 'Scirocco List (E-mail)'
> > Subject: RE: 2.0 16V Turbo
> >
> >
> > It's possible to use a spacer head gasket and raise the boost
> > but I'm not
> > sure how much abuse I want to ask the factory pistons to
> > take.  Probably go
> > with JE 9:1 forged pistons and intercooler next year.
> >
> > The system is very responsive right now and power is at or
> > above the level
> > it was before the turbo went in at *all* RPMs.  It's plenty
> > strong in the 3K
> > range and just plain nutty above 4K.  I'll try to get
> > acceleration times and
> > dyno figures some time within the next month and post them to
> > the list.
> >
> > Bradley
> > '86 S16V 2.0 "T"
> >
> > > From: Gary Huff [mailto:ghuff@htech.com]
> > > Sent: Wednesday, September 22, 1999 9:59 AM
> > > To: Rich Deede; Bradley Peet
> > > Cc: Scirocco List (E-mail)
> > > Subject: RE: 2.0 16V Turbo finally done & 2.25" 16V exh for sale.
> > >
> > > Remember, if you go to crazy with the boost, and too low
> > > compression, your
> > > car wont make any  power at all until like 5000 rpm :) You
> > > would'nt want it
> > > to drive like a honda would you? :)
> > >
> > >> From: Rich Deede [mailto:rdeed@UDel.Edu]
> > >> Sent: Wednesday, September 22, 1999 12:49 PM
> > >> To: Bradley Peet
> > >> Cc: Scirocco List (E-mail)
> > >> Subject: Re: 2.0 16V Turbo finally done & 2.25" 16V exh for sale.
> > >>
> > >> Thats great..I know you must be psyched to finally drive that
> > >> thing.  Now
> > >> I don't know much about turbos but since you can't push it
> > >> past 7lbs due
> > >> to high compression, can't you slap a thicker head gasket
> > in there and
> > >> boost up the turbo?
> >
> >
> > --
> > Email problems to: scirocco-l-probs@scirocco.org  To unsubscibe send
> > "unsubscribe scirocco-l" in the message to majordomo@scirocco.org
> >
> 
> 
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