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Re: [turbobike] custom turbo

Rick (gsxr1100@ptw.com)
Wed, 21 Apr 1999 08:31:05 -0700

Dave I had the same problem untill I put a 5psi check valve in the feed line
also

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

> Jeff,
>     I have a T-2 setup with the same problem.  I am returning my oil via a
> pump to the timing chain cover.  You should return your oil above the oil
> pan or add a check valve to eliminate this problem (any hydraulic shop for
> 20 bucks).
>
>     However, I found that my problem is that I am getting my oil supply
> from the mail oil galley on my F3 (the feed is above the turbo), and when
> I shut the bike off, oil is siphoning into the turbo from there in two
> ways.  1.  The bike still has oil pressure until 10 secs or so after you
> shut it off, no big deal, just run the oil pump until oil press = 0.  2.
> The weight of the oil up high in the engine is pushing it down into the
> turbo or its created a siphon effect, it leaks overnight and fills the
> turbo.  I have confirmed this by unhooking the pump and feed and measuring
> how much leaks out overnight, it is absolutely the feed and not the pump
>
>     I have not found a good solution yet, but if oil sits in the turbo for
> a while it does leak into the exhaust, so it's a big problem.
>
>     Any suggestions?
>
> -Dave.
>
>
>
> Jeff Churchill wrote:
>
> > Christer,
> >       Re:  your answer to George K.  about the oil line placement,.....I
> > think you answered my question/problem.   I have a T-2  on a Buell
> > mounted under the motor,...oil is filling up the turbo when it
> > sits,....tho I have an  electric extraction pump pulling oil out,....and
> > I run the pump for a few moments after engine shut-off.  I didn't  think
> > a one-way valve was necessary,.....can't see how oil makes it through
> > the pump after shut-off,...but it does. What do you use for a one-way
> > valve ???
> >
> > Jeff Churchill
> >
> > J.C. Performance    617-06  Bicycle Path   Port Jefferson Station   NY
> > 11776    USA
> > tech:  516-928-6679  or  516-928-9863
> > website:     http://www.jcperformance.com/
> >
>