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Heater Matrix seals

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Mals1960
Wedgling
Posts: 25
Joined: 23 Jul 2016 02:12

Heater Matrix seals

Postby Mals1960 » 28 Jun 2021 17:05

Hi all, my heater matrix is ok but the seals look old and could do with replacing while the unit is out of the car. If new seals are unavailable is there any magic goop that may help create a stronger bond or restore the old rubber?

Beans
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Joined: 15 Mar 2006 19:29
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Re: Heater Matrix seals

Postby Beans » 28 Jun 2021 21:23

Most people fit a new matrix that does away with these seals.
There is a VAG item that fits with minimal work.
Use the search function as this has been covered before.
Image
1976 TR7 FHC (currently being restored ...)
1980 TR7 DHC (my first car, a.k.a. Kermette)
1981 TR7 FHC (Sprint engined a.k.a. 't Kreng)

http://www.tr7beans.blogspot.com/

Mals1960
Wedgling
Posts: 25
Joined: 23 Jul 2016 02:12

Re: Heater Matrix seals

Postby Mals1960 » 29 Jun 2021 10:23

Many thanks, when you did your heater box were you able to dissassemble the blower motor to change the brushes?

Beans
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Re: Heater Matrix seals

Postby Beans » 29 Jun 2021 19:13

I just checked is was working properly before putting it back in.
Image
1976 TR7 FHC (currently being restored ...)
1980 TR7 DHC (my first car, a.k.a. Kermette)
1981 TR7 FHC (Sprint engined a.k.a. 't Kreng)

http://www.tr7beans.blogspot.com/

Mals1960
Wedgling
Posts: 25
Joined: 23 Jul 2016 02:12

Re: Heater Matrix seals

Postby Mals1960 » 29 Jun 2021 23:45

ok thanks, I may end up doing the same.

busheytrader
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Re: Heater Matrix seals

Postby busheytrader » 30 Jun 2021 20:05

Mals1960 wrote:Hi all, my heater matrix is ok but the seals look old and could do with replacing while the unit is out of the car. If new seals are unavailable is there any magic goop that may help create a stronger bond or restore the old rubber?


If you still have the original painted mild steel heater pipes, they’ll be rusting inside the hardened seals and forcing them open.

The original ones on mine lasted about 11 years before they failed and filled the interior with steam at a T junction. :(

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