[T3] Mustache bar differences?

[William Jahn]

ISP West still offers the aluminum flex tube. It says MH28 x 4 , I know
it's 4 feet, no idea what MH28 is. I used their older stuff which has an ID
that was too big and also bought the one from aircraft spruce years ago
,just haven't fit it yet. I installed it engine in and it was a battle ,
the aircraft spruce is on my so-called long to do list. I always check the
aluminum stuff on it now , having been there for years . So far it's held
up . The difficult part is getting in on the heater boxes because of the
hanger bar. Too bad someone doesn't make a short metal pipe that fits snug
inside the heat box fan end has an end that is the same OD as the fan.

On Fri, Sep 17, 2021 at 8:46 AM Mike Fisher <fisherfarms at gmail.com> wrote:

> I split a 36" piece of orange aircraftspruce duct & 18" fit fine on my
> engine.
>
> On Fri, Sep 17, 2021 at 7:41 AM Jim Adney <jadney at vwtype3.org> wrote:
>
> > On 16 Sep 2021 at 19:51, jadney at vwtype3.org wrote:
> >
> > > IIRC, the early bar is the one with about a 1" diameter hole on the RHS
> > to
> > > give access for the M6 bolt that attaches the bar to the flap of tin
> that
> > > hangs down.
> >
> > Looks like I really messed up my comments on this thread.
> >
> > Yes, there were 2 bars, but the ~1" hole on the right side of the early
> > bar
> > was to allow access to the head of the M6 bolt that attaches the tab from
> > the
> > HEAT EXCHANGER to the engine tin. At some point, VW changed things so
> > that bolt came in from the other side, making the ~1" hole unnecessary.
> So
> > early cars have the weld nut on the tin and late cars have it on the tab.
> >
> > And Max wrote CSP for the supplier of the air ducting but I thought ISP.
> >
> > Looking at the CSP site, it appears that they are selling the same stuff.
> > They
> > claim a 57 mm size, but don't specify ID vs OD. The aircraftspruce price
> > for
> > 2-1/4" ID is $7.80/ft vs CSPs price of 59 Euros for a stretched meter.
> > Aircraftspruce doesn't specify stretched or relaxed, but their price is
> > good
> > either way. Aircraftspruce sells a lot of good stuff at very reasonable
> > prices.
> > The aircraftspruce ducting is sold in inch dimensions, but the 2-1/4" ID
> > and
> > 57 mm stuff are probably the exact same stuff.
> >
> > BTW, as I looked around ISPs web pages, I was struck by how expensive
> > everything is. I KNOW that my price sense is outdated, but their prices
> > seem
> > really extreme. Is this just me? Anyone care to comment?
> >
> > --
> > *******************************
> > Jim Adney, jadney at vwtype3.org
> > Madison, Wisconsin, USA
> > *******************************
> >
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>
>
> --
> Eugene, Oregon
>
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