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914World.com _ 914World Garage _ Impeller Cooling Fan Question

Posted by: Highland Nov 15 2018, 08:42 PM

I went to install my cooling fan and found the bolts were not long enough.

Apparently the fan I decided to clean and balance wasn't the one that was last on the motor (don't know if it was original or not).

Here are the differences. Does it matter which one I use? Is one a bus fan or do they just vary with year?

Attached Image

Posted by: TheCabinetmaker Nov 15 2018, 08:57 PM

I've seen both styles, and they do use different length bolts. Not sure of the difference as to engines or years.

Posted by: johnhora Nov 16 2018, 10:56 AM

I think I remember the cone style on the right had a black plastic bullet shaped plug inserted covering the center hole.

Posted by: bbrock Nov 16 2018, 11:00 AM

QUOTE(johnhora @ Nov 16 2018, 09:56 AM)

I think I remember the cone style on the right had a black plastic bullet shaped plug inserted covering the center hole.

It did. I think those are early style as that's what was on my 70 and had the cap. The two 73s I've owned had the flat-nosed version.

Posted by: 914Sixer Nov 16 2018, 05:16 PM

Different versions for different engines. 1.7, 2.0 used the same timing marks and the 1.8 used one. As for the flat and the cone I have no answer, other than it was on the shelf.

Posted by: jcd914 Nov 16 2018, 11:13 PM

Flat ones were used on engines with Air Injection pumps.

Jim