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Tech Manual
The complete tech manual encompassing all of Johns MG guides.
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MG Factory DVD -Factory Training Films #1, "Pride of Abingdon", "MG Midget Then and Now", "MGB Features", and "Scheduled Maintenance".
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Talking Tour of MGB MKIV - A complex overview of the Mark IV MGB, with detailed instructions of owner operation and some maintenance.
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Under Construction
September 29th, 2008
Q & A: Poor Heater Performance
Thursday June 28th, 2007
John,
I have a 1967 MGB roadster that has been "restored" (not by me). When the heat is on - It doesnt seem to be putting out hot air, just barely warm, but not as
hot as it was 2 years ago - the air comming from the heater is barely warm. The heater valve cable opens and closes - as far I I can see. Do you think the heater coil needs to be replaced? The engine temp is 180 - mater of fact last year I put the heater on to help keep the car from getting too hot. It was near 200.
I read your tech talk in the MGB driver, what a good series.
Thanks
Tom
Tom!
The heater matrix is mostly likely OK. It's probably the flow of hot water that is impeded. Remove the heater control valve from the head and the heater control valve hose from the bottom of the heater matrix. Use your garde... read more
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Tip of the Day
It makes no difference how quickly your MG will accelerate if it cannot
stop! The proper functioning of your brakes must ALWAYS be at the
top of your list of priorities. You owe this degree of safety to yourself,
your passenger, and all others on the road.
John H. Twist (Fall, 1980)