HOW TO: Heater Matrix Repair

MaserCoupe

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383
What a drain!!!:D.......However to quote the Jamaican Olympic bob sleigh team “it’s cool runnins man”.........A trimmed down 20litre Plastic container is perfect to collect the old coolant (around 11.5 litres in the system according to the handbook) so no need to jack the Italian stallion up for clearance to the plug. Perfect time for a coffee....and a cake as it drains. Next stop undo the matrix pipes and have lots of rags for residue coolant.....
 

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MaserCoupe

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God bless Magneti Marelli........Si Si Maurizio!!! Izz, molto, molto bene qualita!!!.....An old one sees the light of day for the first time since factory install in 2005, so glad I caught it before it decided to wet itself. Foam edge ribbing felt moist (ooh err) and a slight whiff of antifreeze but thankfully nothing in the holder or ducting or carpeting....not quite at the final furlong but getting there...:D 56137
 
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MaserCoupe

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383
Out with the old and in with the new! A lesson learnt....the foam strips and the foam around the base of the pipes act as a cushion from vibration. As I noticed a slight movement without them on a dry test fit within the casing. That’s where the fractures and leaks happen (where the plastic meets the core....with the foam strips in place it’s now snug as a bug in a rug.. I also noticed a bead of black sealant on the perimeter of the casing when installing the new core. So out came the sealant and I ran a bead in the groove.
 
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MaserCoupe

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383
Nearly all back together today, except for the seats and Satnav unit....as I wanted to spend this afternoon and evening tending to the sticky bits. Ashtray lid and surrounds, plus the plastic Nav disc cover. Funny enough the steering cowl was still like new as was the dash top vent grill....

Methylated spirit and a microfibre cloth was ideal to strip the tacky goo (and a little kinder on the plastics). I really can’t stand this “luxury touch” rubber finish Shyte rubbish.......it sucks!! Who were they kidding on a £67K automobile....Hey Mario!! Wadda misstaykaa to mayka! It’s crapissimmo!!

So a quick clean and then a light coat of primer (and I mean a very light coat) and when it dried a coat of Matt black finish... the results were really good and now the cockpit is looking a little more spruced up.

Tomorrow final fit of seats then a whizz round the villages to check the coolant level (after the drain) and check no leaks on the matrix.

This whole experience has been a labour of love, learning and not forgetting to mention the money saved (that I’ll spend straight on Shell Optimax) and a night out with Mrs French as a thanks in helping me put the dashboard back in and keeping the coffees coming..

There is something really satisfying in having not one washer or bolt left over and seeing things go back and slot in. A good hoover tomorrow and a clean..(the car not me!)

So excited to drive it tomorrow I can barely contain myself in wanting hear that V8 roar again!! Grrrrrrrrrrr!:boss:
 
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MaserCoupe

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383
Good Work and totally agree I would be lost without my Ms French here in Laval.
Looks like were in for some nice weather too for Easter so its win win.
Yep it’s glorious here too and thankyou Phil yes I feel the same way about My Mrs French.. Well today was final fettle on the cracked Plastic cover, well cracked in several places, a quick clean a lot of patience and new found wet and dry skills with Holts instant no mix filler, a quick lick of primer then Matt black and hey presto! A before pic.
 

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TimR

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Excuse the greenhorn question but please tell me, that isnt a plastic/alu replacement you just shoehorned in there, is it ?
Major undertaking...Id have thought the all metal Saab version was the go ?
 

MaserCoupe

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383
Excuse the greenhorn question but please tell me, that isnt a plastic/alu replacement you just shoehorned in there, is it ?
Major undertaking...Id have thought the all metal Saab version was the go ?
Hi TimR, yeah I never really looked at the Saab version or considered an all aluminium core and ends, really the Nissens was the way to go and I can vouch for the quality............no hot metal Swedish Saab rub massage for my Maser ta!! :D It (the core) all sits in a Plastic slot and constantly running engine temp, now I wonder why Maserati opted to have plastic ends plus the plastic protruding pipes?? PS it wasn’t a greenhorn question....
 
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MaserCoupe

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383
Oh right...Maserati snobbery !! lol
Car looks great on 19"s...;)
LOL!! :):D! Nah no snobbery just saw the nissen recommendation on here and was a good quality route to take. Is your car in need of the matrix doing?

Thanks TimR, yeah it does look great with the Mercury grey GS rims. Those were a factory fit and paint on the final cars. I think the final 10 or less (I’m still researching that figure) of the 89 worldwide facelifts got those. I’m loving it, what a spectacular car for the money for not a lot being made and available as a 3 pedal...
 
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