shagger

Member

• Sep 10, 2021

• #1

having just bought a Def 90 1993 127k miles. The heater/cooling is pants. i saw somewhere on here that a flush through is required. I'll do that ( if pos).
is there an upgrade of some sort available to fit?

Cheers

 

LaxfieldLandy

Active Member

• Sep 10, 2021

• #2

Allisport do an upgraded heater matrix. A few people have also fitted a bilge fan in line to get a better flow.
You can also get a kit to install in the dash to direct some air flow to the side of the dash to clear the side windows.
There are a few seals here and there that can give up too that will mean your air flow goes to your feet as well as the windscreen.

 

shagger

Member

• Sep 10, 2021

• #3

many thanks for that. i guess i should, as starter, stripo the existing one down and see what might be causing the lack of action !

cheers

 

the_wolf

Well-Known Member

• Sep 11, 2021

• #4

You'll probably find that just sealing the system makes a massive difference. Most people overlook it when trying to improve the heating and instead focus on the heater matrix itself. The heating in my 1996 110 is brilliant

 

miktdish

Guns n Chainsaws

Full Member

• Sep 11, 2021

• #5

shagger said:

many thanks for that. i guess i should, as starter, stripo the existing one down and see what might be causing the lack of action !
cheers

Click to expand...

Yes this is the way to go.
You can link the flow and return pipes together on the top of the engine to keep you going.

I fitted new seals to the inlet from the wing and the outlet to the bulkhead as well as around the edges of the heater matrix and on the sufaces of the flaps.
Mine works so much better now, from useless to really good.
The box is riveted together so you need a good, sharp drill and a couple of handsful of rivets to put it back together.

 

shagger

Member

• Sep 22, 2021

• #6

Cheers for that !