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Any advice out there regarding a heater core on a '68 1750. Mine seems to have stopped functioning. Imagine, after 40 years! The blower still works though. Anyway, I seem to have flow through tthe heater (when the lever is set to heat), but no heat, and I suspect the core has just deteriorated over time (fins finished?) If I remove the heater, which doesn't appear to be too onerous a task, can I take it to a rad shop and have them recore it, or am I better finding some sort of original part. Depending on the amount of time and $$$ I may opt to leave it as is. It's not as if I really need it, though it is nice to have on those brisk fall/spring days. Thanks!
 

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Yes, a radiator shop should be able to do this work for you. While you've got the heater unit apart, it's a good idea to replace the rubber diaphragm inside the heater valve, and replace all the hoses, just for piece of mind. Also a good idea to check the condition of the blower motor, after such a long time it might need new brushes at the very least, and a specialist should be able to repair that for you. All this work might save you further effort in the future, so it's a worthwhile opportunity. Use the search function on this website as plenty of other people have done this before and chronicled the process. Good luck!

Alex.
 

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more heater core...

Thanks for the reply, this site is an invaluable resource for an old DIYer like me! I've removed the heater core from the car (not as bad a job as I feared, hope putting it back goes as well.) Anyway, the valve seems to work well and fluid passes easily through the core. Surprisingly the fins don't seem in bad shape, ie, they are not falling apart or unduly bent, just seem a bit dirty, which has me wondering if the core is the problem, or is this something that would not necessarily be visible? Is it possible just to clean the thing with a CLR (acid) type product? Would a rad shop give me an objective evaluation on the core? As far as I know it is the original...40 years old.
 
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