'Dis ... (NOW BOOST PROBLEMS)

[Claus Vegener]

Phil
It is difficult with short accelerations to
watch the boost gauge without running into over-rew.
But yesterday I had a 300 km trip at highways, so I could get the time to watch gauges;
 rods were crowdy.
First: I use Garrett T04/50 and IA V chips.
The Garret is far more slow to spool than
the small kkk24 bur at 1.2 Bar abs it gives more power than the small at 2.4.
I noticed max. at 2.8, I supposed close to 5.000 rpm (yea - we have speed limits too)
but I need to mount my video camera at the backseat to do a better documentation.
I think I had a small flutter at max but on the other hand my boost-graph from 4-wheel roller stands show no ripple.
But when I only press the accelerator to 1.8 Bar and keep the foot calm,
 I had big and slow fluctuations alternating down to 1.3 and up again in a way, that you feel it in your pants.
After some seconds it stabilizes near the low value when the car had reached the speed.
I remember this behavior last year too after initial mount of the turbo and chips.
 (Boost chip is now exchanged due to de-encryption error?)
So the big 10 psi flutter I mentioned last time was not due to wormgears.
I should have fat running too if so much air passed out.
I have not noticed this behavior with k24
and  spring load upon G-T04.

Conclusion: By overtaking just floor it !

Claus
----- Original Message -----
From: "Phil Rose" <pjrose at frontiernet.net>
To: "Claus Vegener" <vegener at post7.tele.dk>
Cc: <200q20v at audifans.com>
Sent: Friday, June 21, 2002 4:08 PM
Subject: Re: 'Dis ... (NOW BOOST PROBLEMS)


> I'm surprised that one else has chimed in on this topic. Does this
> mean that Claus and I are the only ones who have seen the boost gauge
> needle "flutter" while at maximum boost level(s)??? If others have
> seen flutter of about +/- 0.5 PSI, has it been traced to a pressure
> leak?
>
> Phil
>
>
> At 6:26 PM +0200 6/19/02, Claus Vegener wrote:
> >I have seen it without use of wgfv too at max boost
> >(using a spring load to 2.5 Bar) and when this happens
> >normaly found a minor leak - or a bigger some days later.
> >Wormgears around rubber hoses make an elastick tightning. At one
> >point the break through starts and
> >when the pressuer are released it seals again -- I think.
> >I have had 2.7 Bar without flutter.
> >I  T-on my gauge just before the gasolin trap.
> >I have had 10 psi flutter / 1 sec = lose wormgear
> >I have had +/- 0.5 psi 3 times/sec for smal leaks close to
> >idle system
> >
> >Claus
> >----- Original Message -----
> >From: "Phil Rose" <pjrose at frontiernet.net>
> >To: "Claus Vegener" <vegener at post7.tele.dk>
> >Cc: <200q20v at audifans.com>
> >Sent: Wednesday, June 19, 2002 6:04 PM
> >Subject: Re: 'Dis ... (NOW BOOST PROBLEMS)
> >
> >
> >>  At 5:10 PM +0200 6/19/02, Claus Vegener wrote:
> >>  >----- Original Message -----
> >>  >From: "Claus Vegener" <vegener at post7.tele.dk>
> >>  >To: <maximum at weetamoo.com>
> >>  >Sent: Wednesday, June 19, 2002 5:09 PM
> >>  >Subject: Re: 'Dis ... (NOW BOOST PROBLEMS)
> >>  >
> >>  >
> >>  >I have not followd you all the way -
> >>  >Have you checked hose-fittings and IC endcaps with
> >>  >airpressure on the system?
> >>  >High pressure released under an untight wormgear
> >>  >at 1.6 Bar and then building up again ...
> >>  >With an anologous boost meter you would like'ly se some flutter when
> >>  >this happen.
> >>  >You need the meter anyhow so install it before you spoil your rotor.
> >>
> >>
> >>  With my analog boost gauge I see some high-freq. flutter--i.e., the
> >>  needle "blurs" over a range of +/- 0.5 psi --but only while
> >>  maintaining max boost of about 17 psi. I've been assuming that just
> >>  indicates normal operation of the wgfv. Are you referring to another
> >>  sort of flutter (slower)?
> >>
> >>  Phil
> >>  --
> >>
> >>  Phil Rose
> >>  Rochester, NY
> >>  mailto:pjrose at frontiernet.net
>
> --
>
> Phil Rose
> Rochester, NY
> mailto:pjrose at frontiernet.net
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