'Dis ... (NOW BOOST PROBLEMS)
vegener at post7.tele.dk
Sat Jun 22 13:30:36 EDT 2002
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 !
----- 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
> 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
> >----- 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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