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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