Hey Jim just ordered the same fan and switch as you, on the samba thread they say the bilge fans aren’t meant for long running use and might break, have you had any issues with yours ? Obviously not really needed atm!
Interesting. All I can say is that I used mine loads and so far so good. No problems to report. Perhaps they are not meant to run on full power for too long? So the switch will help as I often turn the fan down a bit. Although the setup works so well that I often turn it off after a few minutes cos it got too warm 1979 Super Viking, 2lt type 4, Automatic
Love this thread. I have the heat exchangers and a metal length of heater pipe in my 72' but nothing else (no Y pieces or joints etc.) Part of my resto plan is to get the heating to work and improve it where I can as it sounds like the original system wouldn't do much more than defrost on a good day. Think I'll be getting one of these ordered myself!
Mine took about 4 weeks from China - but how they make the part and post it from China, all for £1.73 is beyond me!
The wires at the moment bend round and come out of a hole at the side of the fan body so they are directly in the airflow - worried about melting ? Also mine has a black rubber cap on the end of the motor - same worry - have you ever looked at yours since installing ?
Wouldn’t the increased airflow help cool the engine as extracting more volume ? That’s what I’m hoping !
I guess the theory is sound. But I haven't noticed that yet. And most of the heat is "generated en-route" as it passes over the heat exchangers. Someone more qualified than me will probably confirm.
hmmmm....no I haven't checked. Assume you're referring to the wires inside, near the fan itself? Can't remember if there are any, or where they are. Although, the air is hot, but I'm not sure the air on mine would be hot enough to melt wires and stuff. I might whip it out at the weekend and take a look.
So, notchboy on The Samba did a test with an IR camera. Idling on the driveway in a 77 Westy (stock heat, not Eber), he got 17c from under the rear seat, 26c from walkway vent, dash was at 21c. Revving up to get the engine pushing air through, the defrost vents were showing 76c. Driving, the areas of the glass being hit by the air from the defrost vents were showing up to 38c. Driving: Idling:
The heat being generated by the engine in the cylinders and heads remains exactly the same whether the heater is on or off. The extra airflow from an auxiliary heater fan is across the heat exchangers, not the cylinders or heads.
Of course ! I was thinking maybe that leaving the fan on after engine shutoff would help stop the engine cooking itself but seeing what you said it wouldn’t of course
All in good order. Didn't have camera on me, but still looks as good as new 1979 Super Viking, 2lt type 4, Automatic
yeah all installed and working well on test but on final instal i connected the control module reverse polarity and blew it up so another ordered! Fan was quite noisy and at engine idle seems to generate similar or slightly more airflow than when engine at high revs, is that what you found?
