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Re: [turbobike] Any suggestions on a wastegate?

Dave Morrill (david.p.morrill@fairchildsemi.com)
Tue, 09 Feb 1999 11:32:04 -0500

Christer,
    Good tip, thanks.  I'll try it.

best,
    Dave.


christer johansson wrote:

> Dave
> Yes it can be qite tiresome to fit a turbo system to a modern bike
> especially if its watercooled like Yours!
> Have You tried to mount the actuator on the opposit side to normal?
> On My old setup (Garrett T3) I used this, then You have to rotate the
> wastegate arm 180 degrees.
> Im sorry but i dont know of any cheap separate wastegates, just the
> usuall turbocompany stuff. If You go with a separate wastegate try to get
> a "big" one around 35mm would do the trick I think. As You will need
> to wastegate a lot at high revs. There must be a separate wastegate on
> some car as stock equipment?! If I dont remember wrongly I think some
> Audis used one?
>
> regards / Christer
>
> Dave Morrill skrev:
>
> > Christer,
> >     Thanks for the reply, I'm fitting the T2 turbo ($300 vs. $1500 for an
> > aerocharger) on a CBR600.  I have unclipped both sides of the turbo housing
> > and twisted/moved it around, as well as moving the actuator assembly
> > everywhere I could think of.  The turbo itself barely fits.  One of my
> > requirements is to keep the stock fairing in place, so....  I'm pretty sure I
> > am going to have to go to an external wastegate and plumb the exhaust
> > manifold for it and move the wastegate near the bottom of the bike.  Gonna
> > keep on trying.  Any wastegate suggestions?
> >
> > thanks,
> >     Dave.
> >
> > christer johansson wrote:
> >
> > > Hi Dave ,All
> > > Why wont the actuator fit ? It can be moved qite easily if it
> > > interferes whit some other components. I have moved the
> > > actuator on Schwitzer turbo. I have a aluminum plate welded
> > > angeled onto the compressor housing , also the actuator arm
> > > has been modified ,lengthened and bent.
> > > An internal wastegate is not bad idea, if it flows enough.
> > >
> > > Best of luck / Christer
> > >
> > > Dave Morrill skrev:
> > >
> > > > Hello,
> > > >     I'm in the process of mounting my turbo/building the exhaust
> > > > manifold and am finding that I can't get the built in wastegate actuator
> > > > to fit (I'm using a Garrett T-2, has the built in wastegate, but
> > > > requires an external actuator) , so I am looking for a stand alone
> > > > external wastegate.
> > > >
> > > >     Any suggestions, size is the main concern (smallest is best) and
> > > > price is also.  I'm planning to run 5-8lbs of boost.
> > > >
> > > > wdya all suggest?
> > > >
> > > >     thanks,
> > > >     Dave.