ebay stag

[singapore stag]

Any one know the green Stag on ebay? (250365627731) has a huge header tank on it, anyone know the make of the tank?

[DJT]

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The Stag is being sold by Robsport International.

http://www.robsport.co.uk/

No idea what the tank is from, sorry.

Dave

[BlueMK2]

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singapore stag wrote:

Any one know the green Stag on ebay? (250365627731) has a huge header tank on it, anyone know the make of the tank?

Perhaps it's something they fit to stop overheating, but then good Stagengines don't overheat do they. :shock:

[DJT]

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BlueMK2 wrote:

singapore stag wrote:

Any one know the green Stag on ebay? (250365627731) has a huge header tank on it, anyone know the make of the tank?

Perhaps it's something they fit to stop overheating, but then good Stagengines don't overheat do they. :shock:

It is not to prevent overheating. If you have that problem a header tank won't help. It is to get rid of the original expansion tank which relies on a 100% leak-free system and a properly operating pressure cap to work. Any faults and you lose water. Any lost water means a starved water pump. Header tank provides a positive head of water to the system at all times, and if you fit one with a level switch wired to a buzzeryou get early indication of water loss.

Some owners have fitted a Mercedes tank in the same place as the Robsport Stag. Others have used the TR7/8 tank. I use a Volvo tank on the suspension tower. Type 'header tank' in the search box and there is plenty of info there.

Dave

[BlueMK2]

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It is to get rid of the original expansion tank which relies on a 100% leak-free system and a properly operating pressure cap to work. Any faults and you lose water.

I see, so it's alright to have water leaks as long as you keep a good head of water to replace the water as it leaks out, personally I would prefer to have a water tight engine like mine, owned it eight years now covered 40,000 or so miles with a completely standardwater system.

Don't you just love these modifications that hide a fault.

Think I will fit some large speaker sub woofer and a big amp so I can turn up the music to hide the diff whine. Maybe Ishould make up a kit and sell it to Stag owners with diff problems.

[nib]

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BlueMK2 wrote:

It is to get rid of the original expansion tank which relies on a 100% leak-free system and a properly operating pressure cap to work. Any faults and you lose water.

I see, so it's alright to have water leaks as long as you keep a good head of water to replace the water as it leaks out, personally I would prefer to have a water tight engine like mine, owned it eight years now covered 40,000 or so miles with a completely standardwater system.

Don't you just love these modifications that hide a fault.

Think I will fit some large speaker sub woofer and a big amp so I can turn up the music to hide the diff whine. Maybe Ishould make up a kit and sell it to Stag owners with diff problems.

I wouldnt have thought someone would go to this trouble to hide a fault more a case of fail-safe,just in case.

[DJT]

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BlueMK2 wrote:

It is to get rid of the original expansion tank which relies on a 100% leak-free system and a properly operating pressure cap to work. Any faults and you lose water.

I see, so it's alright to have water leaks as long as you keep a good head of water to replace the water as it leaks out, personally I would prefer to have a water tight engine like mine, owned it eight years now covered 40,000 or so miles with a completely standardwater system.

Don't you just love these modifications that hide a fault.

Think I will fit some large speaker sub woofer and a big amp so I can turn up the music to hide the diff whine. Maybe Ishould make up a kit and sell it to Stag owners with diff problems.

So how come virtually every modern vehicle, and most classics except the Stag, have a header tank? Must be something to do with better efficiency.

My previous Stag did over 60,000 miles in my 18+ years of ownership with no overheating problems and the standard system. However on one journey my jackshaft/water pump gear failed, resulting in immediate overheating and loss of water through the expansion bottle. This is becoming a regular problem judging by posts on this forum. A bit of additional capacity, a positive head of water and a warningdevice all provide a little more redundancy in the system.

A header tank will not 'hide a fault', as it will still need topping up if there is a leak.

Dave

[Kevin Garrod]

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The other advantage of a header tank is to have a low coolant warning light fitted, so that if (when?) you spring a leak you can deal with it before overheating begins.

I hope my light never comes on in anger!

[Stagdad]

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BlueMK2 wrote:

It is to get rid of the original expansion tank which relies on a 100% leak-free system and a properly operating pressure cap to work. Any faults and you lose water.

I see, so it's alright to have water leaks as long as you keep a good head of water to replace the water as it leaks out, personally I would prefer to have a water tight engine like mine, owned it eight years now covered 40,000 or so miles with a completely standardwater system.

Don't you just love these modifications that hide a fault.

It's not hiding the fault ,i'm well aware that one of my inlet gaskets leaks a little bit as do many ,and belive me i have tried to stop it ,but now with the header tank i can motor on with total confidence.

You can still see if you have a fault as the level goes down in the tank

[singapore stag]

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Hi, I am still looking for a header tank,anyone know of a good one with the correct kpa,psi (150, 21.7 respectively)?, will appreciate feed back. The one pictured with the blue cap is nice, which Volvo is it from?....cheers,

[DJT]

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singapore stag wrote:

Hi, I am still looking for a header tank,anyone know of a good one with the correct kpa,psi (150, 21.7 respectively)?, will appreciate feed back. The one pictured with the blue cap is nice, which Volvo is it from?....cheers,

It came from a 760 estate. I cut the mounting bracket from the inner wing of the Volvo and welded it to a bit of steel to form a bracket to attach to the strut mounting. The tank will lift off its bracket to give access to spark plugs.


Dave

[singapore stag]

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Clever boy! Cheers.....