Re: Change of radiator core affecting cooling performance in 1949, 23rd series

Posted by HH56 On 2019/8/5 12:19:20
There was a special heavy duty fan made available for 22-23 small series engines which was later made available to engines as far back as the 17th series. We are missing bulletins 49T-14 and 50T-29 which might give details on the fan so don't know if it was more blades or more diameter.

For 51-4 they made a heavy duty fan that I believe later became stock on upper end models. Those increased the diameter almost 2" from 18" to 19 7/8" but I believe kept the 4 blades. That may be the same heavy duty fan used on the 22-23 series since the blocks are the same. Fans on AC equipped cars were 6 blade and probably the 19 7/8 inches.

As far as I can tell only the 356 used the 5 blade and I know those have a different sized water pump hub than that of the 288/327 block engines. There was a heavy duty fan for AC equipped prewar 356 engines but finding a spare one is likely not that easy. It was probably a 6 blade too.

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