Heater blower

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I read with interest a recent article on the Magnette blower, as mine was useless as well. Rather than a new fan I looked at the dynamics of the blower - well I am a scientist! The fan is of good design but not matched to the housing,
In attached pics you can see dead space below fan and no real cut off at the narrow part of the housing. Air goes round and round and although a good volume of air is moved no real pressure is created, hence it does not
come though slots to demist windscreen.

Pics show the mods I made. Lose dead space by filling with PU foam sheet and put in a wooden profile section to deflect air and create pressure sealed with solvent free gripper fill and one screw to wooden section. Seems to work very well - will now blow paper off the dash and defrost windscreen in minutes. Cost almost nil.

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