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Thread: Heater Matrix Replacement

  1. #71
    Back to the job of fitting a new matrix,
    when you put everything back together after re-installing the matrix and the complete black plastic unit where it sits in, don't try to be smart by bolting in the yellow underdash construction first, or the leather clad dash top first for that matter.
    One will Always be in the way of the other when installed seperately.
    You need to re-install them at the same time.

  2. #72
    Senior Member davidhowson's Avatar
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    The great re-fit is underway! Cleaned up the fan unit and refitted, new Samco silicone hoses and heavy duty stainless steel clamps, new heater matrix in and the HVAC unit resealed and is now plumbed in and fitted back in the car.
    Not too shabby for a few hours on a dull Saturday.
    Running total is about 11 hours so far.



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  3. #73
    Senior Member mjheathcote's Avatar
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    Is there any way to start the car before putting the dash back to check for leaks/retighten the hose clamps after a few heat cycles?
    Mike

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  4. #74
    Senior Member davidhowson's Avatar
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    I have considered that, however I think I would have to disconnect the airbag ecu otherwise I will get a warning light, but Iím still not sure if I should risk it. I have made every effort to ensure the new pipes and matrix are in tightly but who knows !


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  5. #75
    Senior Member mjheathcote's Avatar
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    Yah you are right you certainly need the airbags connected.
    It was just a thought.
    Mike

    02 "Classico" 4200 CC Coupe
    74 Triumph Stag
    10 BMW 320d Touring M Sport
    15 Volvo V40 D4 R-Design

    Past Italians: FIAT Panda, Lancia Y10 Fire, Lancia Y10 Turbo, Alfa Romeo 33S 16V Cloverleaf Permanent 4, Alfa Romeo 146 Ti

  6. #76
    Senior Member mjheathcote's Avatar
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    Also, is it possible to add any shielding over sensitive ecu's so if there is a leak, the electronics are protected from above? Even slipping them in a plastic bag maybe!!
    I would give everything a good spray with ACF50 too.
    Again just a thought.
    Mike

    02 "Classico" 4200 CC Coupe
    74 Triumph Stag
    10 BMW 320d Touring M Sport
    15 Volvo V40 D4 R-Design

    Past Italians: FIAT Panda, Lancia Y10 Fire, Lancia Y10 Turbo, Alfa Romeo 33S 16V Cloverleaf Permanent 4, Alfa Romeo 146 Ti

  7. #77
    Senior Member Zep's Avatar
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    I would suggest, if you have an air compressor, one of these. https://rover.ebay.com/rover/0/0/0?m...2F332447589950

    You can pull a vacuum on the system which checks to leaks without adding water and it stops any airlocks when filling.

  8. #78
    Senior Member davy83's Avatar
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    Where is a vacuum pump in that system? It looks like you use your drill to drive some thing? Might be a cool thing to have though!

    Quote Originally Posted by Zep View Post
    I would suggest, if you have an air compressor, one of these. https://rover.ebay.com/rover/0/0/0?m...2F332447589950

    You can pull a vacuum on the system which checks to leaks without adding water and it stops any airlocks when filling.
    Current - 3200 GTA, Yeti, V8 Land cruiser,
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  9. #79
    Senior Member davidhowson's Avatar
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    Finished off yesterday by refilling the cooling system with fresh coolant, obviously canít start up yet but released the two breathers on the cylinder heads and had a fair amount of air bubble out before tightening up again. Going to leave it until Saturday now and see if thereís any sign of moisture on the new parts and if the level drops in the header tank.
    Replaced the dash top air distribution channels and next will be to start putting the dashboard back in.
    I recon on another two weekends of rebuilding and I should be ready to run again.



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  10. #80
    Forum Owner Conaero's Avatar
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    Well done David, top job.

    Not too scary in the end?


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