[ROVERNET - UK] Expansion Tank - next step

Robert Thornton R.Thornton at adelaidecitycouncil.com
Tue Feb 22 01:56:06 GMT 2005


The blanking sleeves used on the Minis were a Special Tuning part and
are still available from Mini specialists. They slow down the
circulation and are essential when removing the thermostat otherwise you
get hot spots in the head. They are really meant for competition cars.
For road use it can take a while for the coolant to reach operating
temperature, and the heater blows cold air. The solution, well-known in
Mini circles, is to use the exiting thermostat but drill half a dozen
3/8 holes around its circumference. 

Rob

-----Original Message-----
From: rovernet-bounces at lyris.ccdata.com
[mailto:rovernet-bounces at lyris.ccdata.com] On Behalf Of James Dean
Sent: Tuesday, 22 February 2005 12:01 PM
To: rovernet at lyris.ccdata.com
Subject: Re: [ROVERNET - UK] Expansion Tank - next step


35 Years ago,When I had my First shop in Cambridge, Mass, and Rovers
were still low mileage used cars that I serviced; I spoke to the BMC
Factory rep. about overheating on Mini-Cooper S. The factory had solved
this problem, using BMC factory parts.They used a blanking sleeve- this
was a thermostat with the center removed. A flat non-release cap on the
radiator(As I previously stated, same as SI XJ6), And the expansion
tank, also used on various MG's. Mini Cooper S and Series II Etype.I
know no one wants to hear aboutJaguarand MG, but the parts do not know
what car they are on, and this pressurized system works better than the
non pressurized plastic tanks.Regarding blanking sleeves, they were a
competition item; it is best to use thermoststs.Regarding the brass
tank, The BMC rep said it can go anywhere, but it must be below the
level of the radiator cap.It should be half full when coolant is cold,
radiator should be full.The tank must be accessible, as you top up its
coolant, so don't hide it in the fender.There are 2sizes of these tanks,
the later one is fatter, and holds a little more. If anyone wants one, I
just found one. Contact me offline, or I will put it on my ebay store,
with a photo; where I put some other rare Rover stuff. James Dean, Old
English Motor Company.jaguru at bellsouth.net-- Original Message -----
From: <rogerdm at iprimus.com.au>
To: <rovernet at lyris.ccdata.com>
Sent: Monday, February 21, 2005 5:59 PM
Subject: RE: [ROVERNET - UK] Expansion Tank - next step


> Hi Ray,
>
> I have just bought a 3500 with the twin filters.  Having looked 
> somewhat superficially I can see no reason why you couldn't remove 
> them altogether or plumb them into one cannister the other side from 
> the expansion tank.  Air is drawn into the manifolds through the 
> cannisters thereby taking
fumes
> from the overflow pipes of the carby's.  If you remove them totally 
> you
may
> breach regulations.  All you need to consider is to properly block the

> air bleeds on the inlet manifolds and provide two pipes to take 
> overflow fuel from the carby's down the front of the block to just 
> below the base of the radiator.  However Peter seems to have a better 
> solution.  I think
expansion
> tanks are very helpful to efficient cooling.  cheers roger
>
> >-- Original Message --
> >From: "Peter Mitchell" <peterm at arach.net.au>
> >To: <rovernet at lyris.ccdata.com>
> >Subject: RE: [ROVERNET - UK] Expansion Tank - next step
> >Date: Mon, 21 Feb 2005 19:51:16 +0800
> >Reply-To: rovernet at lyris.ccdata.com
> >
> >
> >Hello Ray
> >
> >I have just had an SD1 expansion tank fitted to my P6B. It was a 
> >tight squeeze, behind the brake booster.  Tomorrow I'll take a photo 
> >and send
> it
> >to your email address to show you how it went in, without removing 
> >the canisters.
> >
> >Cheers
> >
> >Peter Mitchell
> >Perth WA [Also Western Australia to those in the US of A ]
> >
> >-----Original Message-----
> >From: rovernet-bounces at lyris.ccdata.com 
> >[mailto:rovernet-bounces at lyris.ccdata.com]On Behalf Of Ray Wilkins
> >Sent: Monday, 14 February 2005 11:00 AM
> >To: rovernet at lyris.ccdata.com
> >Subject: [ROVERNET - UK] Expansion Tank - next step
> >
> >
> >Thanks to all those who responded to my request for details on how to

> >set up an expansion tank on my 1976 P6B. I am still concerned at the 
> >lack of space. My car is still very original under the bonnet and 
> >there just doesn't seem to be any room for the tank. I have been told

> >however that I could do away with one (or both) of the charcoal 
> >canisters but I'm unsure exactly how the 'plumbing' would work. By 
> >freeing up the RHS of the engine bay would then certainly give me 
> >enough room for the expansion tank.
> >
> >So, 2 questions. One, What are the ramifications of doing away with 
> >one or both charcoal canisters and Two, how would the plumbing work.
> >
> >Thanks in advance for your responses.
> >
> >Cheers,
> >
> >Ray Wilkins
> >Melbourne, Australia
> >1976 P6B
> >
> >
> >
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> >
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