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#Post#: 365--------------------------------------------------
Heater Matrix question
By: Stooza Date: August 28, 2012, 3:51 am
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Hi guys, after a tragic heater matrix failure I am left with a
few questions. As its a road/track vehicle I would like to
retain the heater.. but I dont want another matrix bursting
causing burns to feet! Is there a type of manual bypass valve
that you guys know of that would allow me to shut the matrix off
when the car is on the track? Doesnt need to be fancy, just
functional.
Cheers!
Stu
#Post#: 367--------------------------------------------------
Re: Heater Matrix question
By: mitlom Date: August 28, 2012, 3:57 am
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Isn't that what the existing valve operated by the cable does
Stu? It is on a Mk1 that's for sure....
Although clearly that's only on the feed in to the matrix, but I
can't see any reason why you can't fit one on the outlet back in
to the engine to completely isolate it if you get my drift?
#Post#: 368--------------------------------------------------
Re: Heater Matrix question
By: Stooza Date: August 28, 2012, 12:45 pm
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I dont think it works that way on the mk2. They did have a
valves on them but they were renowned for sticking and causing
problems.. and they didnt bypass, just closed off iirc. Might be
a trip to the plumbers merchant for me!
#Post#: 369--------------------------------------------------
Re: Heater Matrix question
By: mitlom Date: August 28, 2012, 2:19 pm
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The ones on the Mk1 only close off as well from memory but are
less prone to sticking I think, what I was thinking is put one
on each side of the matrix and then if you close both off then
the matrix is in effect bypassed is it not?
#Post#: 370--------------------------------------------------
Re: Heater Matrix question
By: Stooza Date: August 28, 2012, 4:15 pm
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Depends (pardon my ignorance) but is it not just blocked off as
opposed to bypassed? I guess it would work tho as its the oem
way :)
#Post#: 371--------------------------------------------------
Re: Heater Matrix question
By: mitlom Date: August 28, 2012, 4:47 pm
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Stu,
Yes you're right it would just be blocked off, but is this not
the same as bypassed or am I missing the object of what you are
trying to do? However you do it the heater matrix will always
have coolant in it will it not or are you wanting to purge it of
any coolant after you have engaged the bypass? If so you need
to be carefull you don't end up with an airlock when you
disengage the bypass ::)
If your concern is the flow through of coolant round the cooling
circuit then consider current system where you basically close
of the feed pipe to the heater matrix stopping the flow pretty
much as I have suggested....the main difference being that if
you close off both the feed and return of the matrix you are
completely taking it out of the coolant circuit ;)
If I've got what you are trying to do wrapped round by lower
extremity then sorry lol :D
#Post#: 372--------------------------------------------------
Re: Heater Matrix question
By: Stooza Date: August 29, 2012, 3:50 am
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hehe nicely put. Ideally, what I was thinking was to put in a
couple of valves that I can manually turn off but have a bridge
pipe between the in and out of the matrix thus completing the
circuit again. If I understand what you are saying however,
perhaps this is not needed and a simple blocking off of the
pipes is needed for track days (which would be easier).
#Post#: 378--------------------------------------------------
Re: Heater Matrix question
By: JMR Date: August 30, 2012, 3:36 pm
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Mk2's appear to be very prone to matrix failure compaired to
mk1's. Id have thought a new high quality one wound give
good/long service before age related failure came around again.
An electric fan/de-mister for kit car use could be used for the
screen...and 2 pairs of socks for yr toes!
#Post#: 388--------------------------------------------------
Re: Heater Matrix question
By: Stooza Date: August 31, 2012, 7:10 am
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hehe cheers Jason :)
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