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Heater Matrix Seal Leak


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#1 chrisandsarah

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Posted 13 March 2012 - 01:18 AM

Rover Mini 1992 City

Heater matrix is leaking a the point where the bit that the hoses join on to - joins on to the matrix... I am assuming that there is a diddy gasket inbetween...

Is there - and if so - where can I get one, or is it just a replacement job?

Thanks guys!

#2 brad-the-bear

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Posted 13 March 2012 - 06:41 AM

get some silicon sealant (high temperature) or gasket maker, worked for me :proud:

#3 reallybig

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Posted 13 March 2012 - 08:51 AM

get bypass hose fool :D

no gasket seen on the somerford explody thing

http://www.somerford...page=page&id=99

Edited by reallybig, 13 March 2012 - 08:52 AM.


#4 Kerrin

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Posted 13 March 2012 - 09:00 AM

There is a rubber o ring on each alloy pipe which seals them, but it is possible the alloy is rusted through which may be the problem.

You can get new brass (I think, it's been a while since I did mine) pipes and o rings from mini spares if necessary.

You may get away with just new o rings but if it's your daily driver and the heater matrix is ok get the new pipes.

Edited by Kerrin, 13 March 2012 - 09:01 AM.


#5 Dan

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Posted 13 March 2012 - 10:58 AM

Depends which heater is fitted. 1992 is a change point for heaters, it could be either the late heater with two seperate metal pipe stub outlets or it could have the twin plastic outlet plate with the two diagonally split pipes.

#6 freshairmini

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Posted 13 March 2012 - 11:27 AM

Well if its got plastic outlets its a new o ring, same happened to me and it fixed it. No Need for SILICONE. Especially if using it with rubber, as it eats rubber and it'll leak in no time.

If its metal, and its leaking, then take it out for closer inspection, could have rusted.

#7 reallybig

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Posted 13 March 2012 - 11:52 AM

it's the one with two pipes at the bottom on the right hand side of the matrix

(chris is being too slow) :D

#8 chrisandsarah

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Posted 13 March 2012 - 12:20 PM

Depends which heater is fitted. 1992 is a change point for heaters, it could be either the late heater with two seperate metal pipe stub outlets or it could have the twin plastic outlet plate with the two diagonally split pipes.


It is the twin plastic rather than the later one

#9 reallybig

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Posted 13 March 2012 - 12:26 PM

this is pic of his heater matrix

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#10 chrisandsarah

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Posted 13 March 2012 - 12:33 PM

Posted Image

Cheers semibig for the pic :P

Its leaking between the plastic bitty and the matrix - it sort of bows out a little - the plastic looks warped

#11 freshairmini

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Posted 13 March 2012 - 12:34 PM

this is what you need (x2): http://bit.ly/wIwIFX

just make sure two surfaces are clean.

#12 reallybig

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Posted 13 March 2012 - 12:49 PM

are these: http://www.minispare...id=42458&title= in the pipes?

#13 chrisandsarah

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Posted 13 March 2012 - 12:53 PM

this is what you need (x2): http://bit.ly/wIwIFX

just make sure two surfaces are clean.


Really??? Just undo those little diddy bolts and put those in?

are these: http://www.minispare...id=42458&title= in the pipes?


I think those are for later mini matrix

#14 freshairmini

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Posted 13 March 2012 - 12:59 PM


this is what you need (x2): http://bit.ly/wIwIFX

just make sure two surfaces are clean.


Really??? Just undo those little diddy bolts and put those in?


Yep Just that. I had a similar problem with mine, two new washers and it no longer leaked. No need for any sealant.

#15 chrisandsarah

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Posted 13 March 2012 - 01:06 PM

Parts have been ordered :D - are those diddy bolts easy enough to get off?




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