Turbobike Web Site www.Turborick.com

Re: [turbobike] comp ratio

Rick (gsxr1100@ptw.com)
Mon, 12 Apr 1999 07:32:22 -0700

No write ups each type of motor has it own threshhold.
I know the gsxr very well and am shure you can run 10PSI with
stock compression un intercooled on pump gas.
Just find your self a stock cylinder and pistons


> Rick,
>     Looks like I did go too low.  BTW I am not intercooling (no room, I
wanted
> to keep the stock fairing on)  I dropped it with a head gasket and ran
into
> cam chain length problems, so I had a cam chain made, and build my own
> tensioner which was a real headache.
>
>     Do you have any write ups of detonation vs. comp ratio vs boost vs.
> octain?  I would way rather run compression numbers like you are, but not
> intercooled and 7-8lbs of boost.
>
> thanks,
>     Dave.
>
> Rick wrote:
>
> > The 1052 motor has 10:1 stock and the 1127 has 10.5:1 compression
> > I can run about 12 to 14 PSI on pump gas making 260 to 275 HP to the
> > rear wheels.
> >
> > In my opinion you went WAY to low in compression and if you put a thick
> > base gasket under the cylinder or a thick head gasket you killed allot
> > of efficiency by opening up your squish
> >
> > Turbo Rick
> > 350HP Turbo GSXR1100 Street bike
> > Web Site  http://www.ptw.com/~gsxr1100/
> > Southern California Timing Association 1998 Fastest Bike of the year
> > EL Mirage Land speed Record holder 204.626 MPH
> > E-mail gsxr1100@ptw.com
> >
> > >     I'm curious, what's your compression ratio and how much boost can
you
> > run
> > > on pump gas?
> > >
> > > Dropping compression on my bike was a pain in the butt, but I wanted
to
> > use
> > > pump gas.  I went from 12:1 to 7.9:1.
> > >
> > > thanks,
> > >     Dave.
> > >
> > > Rick wrote:
> > >
> > > > Hi George
> > > >
> > > > >
> > > > > Hi my name is George and I live in montreal,Canada.
> > > > > I have a nitrous injected 1100 gsxr in a 750 frame.The bike made
> > > > > 137.5hp at the wheel and 190.2 with NOS.Quarter mile time was
10.16
> > > > > @147mph.I know want to turbocharge but I need some info.I'm aiming
at
> > > > > 210-240hp with stock internals.What turbo can I use that I can
> > scavenge
> > > > > from a car?Can I use my stock 38mm carbs and do I have to modify
> > > > > anything?My friend is a machinist and he owns a tig welder.We will
> > > > > fabricate the headers and intake.Can a T-3 garrett be used?
> > > >
> > > > The T-3 will work
> > > >
> > > > > How do i get the oil to the turbo and back to the engine?
> > > >
> > > > Tap into the main oil gally plug on the right side below the
ignition
> > cover
> > > > if you mount the turbo high enough you can drain into your clutch
cover
> > > > if you have to use a pump or use the suction from the engine oil
pump
> > > > to draw the oil out.
> > > >
> > > > Do I need an
> > > > > oil pump?How can I lower the compression using stock pistons?
> > > >
> > > > leave the compression alone
> > > > I run mine stock with 26PSI
> > > >
> > > > Turbo Rick
> > > > 350HP Turbo GSXR1100 Street bike
> > > > Web Site  http://www.ptw.com/~gsxr1100/
> > > > Southern California Timing Association 1998 Fastest Bike of the year
> > > > EL Mirage Land speed Record holder 204.626 MPH
> > > > E-mail gsxr1100@ptw.com
> > >
>