Thanks again Terry!
The downdraught weber I have sits on a stock manifold.
With the turbo this is something I have been thinking about. I don't exactly
want the intake air to be heated again (after the intercooler) when it is
travelling through the manifold. What is your opinion on sealing up the
manifold water holes. Would the manifold heat up less?
My 3 bolt thermostat housing has an extra outlet (pre-thermostat) in it so I
could do an equalizer there.
zac
----- Original Message -----
From: Terry Rudd <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, May 05, 2001 7:55 PM
Subject: RE: Temp gauges
> Zac,
>
> If you're running a downdraft carbie in a temperate climate all year round
> (like Adelaide) it probably doesn't matter but anywhere that the air temp
> gets around freezing or below it's a good idea as it stops the air/fuel
> mixture from re-separating on the bend which can cause fuel freezing. Most
> weber manifolds don't suffer fuel freezing and most don't even have water
> runners so the bypass is blocked off at the pump, and as it's on the suck
> side it doesn't hurt anything. I say if you're not getting flat spotting
and
> the cold splutters once the water temp is up to around 160 degrees and
over
> then you don't need the bypass connected. There is an optimum intake air
> temperate, too hot runs too rich and too cool freezes, 40 to 70 degrees F
is
> around optimum for an engine (especially turboed) and you can get mild HP
> gains if you can run in that range.
>
> For anyone running SU's they the exception as they seem to be happier with
> the bypass connected especially at altitude and in cool climates.
>
> regards
> Terry
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Zac Campbell
> Sent: Saturday, 5 May 2001 6:39
> To: [EMAIL PROTECTED]
> Subject: Re: Temp gauges
>
>
> That isn't connected on mine! The hoses on both sides are disconnected.
> Should I connect it?
>
> zac
>
> ----- Original Message -----
> From: Terry Rudd <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Saturday, May 05, 2001 5:58 PM
> Subject: RE: Temp gauges
>
>
> > A bypass pipe is simply a means of directing water flow at engine
> > temperature unrestricted to where it is wanted. eg a water temperature
> > regulated inlet manifold like on a stock L series. Yes, it does also
serve
> > to equalise pressure either side of the pump but that is not the primary
> > purpose, and not all engines have a bypass either so that's what the
hole
> is
> > for.
> >
> > regards
> > Terry
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED]]On Behalf Of Paul W. J.
> > Stanley
> > Sent: Saturday, 5 May 2001 12:06
> > To: [EMAIL PROTECTED]
> > Subject: Re: Temp gauges
> >
> >
> > Am I correct in saying that is what the bypass pipe is for?
> >
> > ----- Original Message -----
> > From: <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Thursday, May 03, 2001 1:39 PM
> > Subject: RE: Temp gauges
> >
> >
> > > A thermostat actually never totally blocks the water flow cause that
> would
> > > really create a problem. There is a little hole in the thermostat to
> > balance
> > > the pressure either side of it so the water pump can still pump. Some
> > thermo
> > > fan sensors go in there eg Davies Craig - it's not a problem and it
> would
> > be
> > > very accurate.
> > >
> > > Terry
> >
> >
> >
> >
>
>
>
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