[928uk] Advice and parts - intake tubes

[Ben Hodges]

Isn’t the Venturi shape of the plastic ones an attempt to reduce noise too?

On Sat, 8 Jun 2024 at 18:48, Simon Crowe via 928uk <928uk at lists.928.org.uk>
wrote:

> I could never hear any difference between the plastic on my S4 and the
> foam on my GTS.
>
> When they did finally fall apart (I think the inner wires rusted heavily
> and the foam detached itself) I bought a pair of plastic/rubber hoses from
> an Italian company, specially designed for the 928. A perfect fit and I
> still have them.
>
>
>
> > On 8 Jun 2024, at 18:15, Paul R Smith via 928uk <928uk at lists.928.org.uk>
> wrote:
> >
> > According to PET, they started in 1987 for Switzerland, 1992 for all
> markets.
> >
> > Smiffy
> >
> >> On 08/06/2024 17:25, phil rick via 928uk wrote:
> >> learn something new every day, i thought the crap foam hoses only came
> with
> >> the GTS, but must have started on the 91 model year
> >>
> >> On Sat, Jun 8, 2024 at 5:21 PM jonathanrackowe--- via 928uk <
> >> 928uk at lists.928.org.uk> wrote:
> >>
> >>> Oh yes, thanks, I'd forgotten that. Can't say I noticed any difference
> in
> >>> noise level when I fitted the Samco silicone tubes, but maybe that's
> due to
> >>> my de-catted custom exhaust system!  :-D
> >>>
> >>> Best regards,
> >>> Jonathan
> >>>
> >>> West London, England
> >>>
> >>> 1991 928 GT Amethyst Metallic with Blueflame custom exhaust and Porsche
> >>> 18" Sport Design wheels
> >>>
> >>>
> >>>
> >>> -----Original Message-----
> >>> From: 928uk<928uk-bounces at lists.928.org.uk>  On Behalf Of Paul R Smith
> >>> via 928uk
> >>> Sent: 08 June 2024 15:24
> >>> To:928uk at lists.928.org.uk
> >>> Subject: Re: [928uk] Advice and parts - intake tubes
> >>>
> >>> The official reason for the foam hoses was to reduce noise:
> >>> "All 928 GTS vehicles are fitted with noise-reducing intake hoses of
> the
> >>> same type used previously on export vehicles
> >>> for Switzerland."
> >>>  From the 1992 service tech info document.
> >>>
> >>> Smiffy
> >>>
> >>> On 08/06/2024 14:07, jonathanrackowe--- via 928uk wrote:
> >>>> My 928 GT has a pair of Samco SHL77 Silicone Hoses 77x640mm installed
> -
> >>> that
> >>>> I fitted back in 2006. They're still perfect.
> >>>>
> >>>> The foam hoses that Porsche fitted to the 928 GT and GTS were rubbish!
> >>> The
> >>>> insulation was intended to keep the intake air cool, but it
> disintegrated
> >>>> badly. Given the speed of the air rushing into the 32V V8 engine I
> doubt
> >>>> that the foam hoses made any significant difference to the intake air
> >>>> temperature anyway.
> >>>>
> >>>> Best regards,
> >>>> Jonathan
> >>>>
> >>>> 1991 928 GT Amethyst Metallic
> >>>>
> >>>>
> >>>>
> >>>> -----Original Message-----
> >>>> From: 928uk<928uk-bounces at lists.928.org.uk>   On Behalf Of Ian Marsh
> via
> >>>> 928uk
> >>>> Sent: 07 June 2024 16:06
> >>>> To: 'Cengiz Ali'<cengizali at btinternet.com>; '928 List'
> >>>> <928uk at lists.928.org.uk>
> >>>> Subject: Re: [928uk] Advice and parts
> >>>>
> >>>> Cen,
> >>>>
> >>>> I can't help with much of what you require but I gave up looking for
> >>> decent
> >>>> intake tubes and bought a pair of Mercedes Tubes modified to fit 928's
> >>> from
> >>>> Roger and 928rus.
> >>>>
> >>>> The genuine Porsche replacements were about twice the price in in my
> >>> opinion
> >>>> inferior in design.
> >>>>
> >>>> Hope this helps
> >>>>
> >>>> Regards
> >>>>
> >>>> Ian
> >>>>
> >>>> Ian J Marsh
> >>>> Regional Organiser
> >>>> 07976 242344
> >>>> West Country Region
> >>>>
> >>>>
> >>>>
> >>>> -----Original Message-----
> >>>> From: 928uk<928uk-bounces at lists.928.org.uk>   On Behalf Of Cengiz
> Ali via
> >>>> 928uk
> >>>> Sent: Friday, June 7, 2024 4:01 PM
> >>>> To: 928 List<928uk at lists.928.org.uk>
> >>>> Subject: [928uk] Advice and parts
> >>>>
> >>>> Hi All,
> >>>>
> >>>> It was good to see some of you at Simply last weekend.
> >>>>
> >>>> A few things please:
> >>>>
> >>>> Does anyone on the list know if the warning triangle originally came
> in a
> >>>> storage bag (similar to the jack)? If so are they available or does
> >>> anyone
> >>>> have one they are willing to sell?
> >>>>
> >>>> Also, I have an old Porsche tyre inflator, the one that is in its own
> >>> black
> >>>> plastic box and runs off the cigarette lighter. It runs but is pretty
> >>> weak
> >>>> and not producing enough air to fill a tyre, can these be repaired?
> >>>>
> >>>> Also, does anyone have a very good black plastic intake pipe that runs
> >>>> either side of the air box to the front of the car ducts they want to
> >>> sell?
> >>>> Many thanks
> >>>> Cen
> >>>> S2 auto 86.5
> >>>>
> >>>>
> >>>
>
>