Shrouded Electric Fan
The following article was sent to me by Win Muehling in Vancouver and he has kindly given me permission to reproduce it here. I think Plus 8 owners in particular will find it very interesting.
Shrouded electric fan
When I purchased my 1986 Plus 8 a few years ago it was plagued with chronic overheating.. I had the radiator checked and cleaned and replaced the unpressurized radiator cap with the correct pressurized one. Added water-
I discounted the option of installing a pusher fan in front of the rad since it obstructs the airflow at speed and only helps at idle. Oil coolers were readily available, so I ordered an oil cooler kit from the UK. The kit arrived from the UK, but the oil filter adaptor didn’t fit.. No problem, according to the dealer, we will send you the right one.
While I am waiting for the rest of my oil cooler parts, I happen to be in the local auto supply store, and they had a sale on shrouded aftermarket fans for Honda Civics. It immediately caught my eye since it was very thin and appeared to be about the same size as a Plus 8 radiator. I took some measurements, went back home and sure enough it was the exact size of the finned area of the mog rad!. It was actually cheaper than the uprated fan I had purchased the year before from the Morgan Dealer, and which hadn’t improved matters. The only modification needed was a notch at the bottom of the shroud to accommodate the bottom hose spigot.
The fan and shroud are attached to the radiator by four nylon zip ties. . While I had the radiator out, I also had a new socket soldered on to take a standard threaded Japanese temperature switch rather than the archaic friction fit switch the rad came with. (One less source of leaks and a choice of on/off temperatures). I also used a Bosch relay to make life easier on the switch. A little extra work with the wiring but always a good investment.
I have had three summers with the shrouded fan and no more over heating problems .The oil cooler is still sitting on the shelf.
When I purchased my 1966 Plus 4 4-
I didn’t like the looks of the oil-
Although there appeared to be plenty of room, the shrouded fan was actually a tighter fit than on the Plus 8. The only way I could get the fan and radiator back in was to lower the radiator and move it forward by nearly an inch. (The only way to move it forward is to also lower it in order to clear the cowl. Can’t move it too far forward as otherwise your filler extension will be inaccessible. ( At a later date I actually extended the filler extension, in order to make it more accessible) . After experimenting with some home-
Win Muehling, Vancouver, Canada
Forgot to mention that the brandname I showed doesn't be around anymore and now part of "Flexalite". I just bought another fan for my dHC a few days ago and am attaching a copy of the box. It is available with straight or curved blades and with and without sensor. About CAN$200. Depending on discount.