Volvo RWD 1800 Forum

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Electric Rad Fan 1800

Would like to install an electric rad fan on my 1972 ES HAAS ANYONE ever done this?








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    Electric Rad Fan 1800

    I put a cheap electric fan from Jeg's on my (not exactly show-quality) '67 1800S and it worked beautifully. Had the same problem as an earlier post with the plastic mounting bolts not fitting thru the Volvo core, so I replaced the bolts with plastic "zip ties." Wired a switch under the dash, and never feared heavy summer traffic again. Cheap and easy, and as long as you've determined there's nothing fundamentally wrong with your cooling system I highly recommend it.








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    Electric Rad Fan 1800

    I'm happy with this Flex-a-Lite model 10...

    www.flex-a-lite.com











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      Electric Rad Fan 1800

      Hey Phil your air filter looks different than mine. I have a 73 1800ES and I’d like to know about your air filter so I can get one for my car. Mine is a can with a filter inside, the preoble is that the can won't close up. Thanks.








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        Electric Rad Fan 1800

        If your air filter "can" does not close, chances are you have a 140 air filter. They are about an inch taller (or thicker when on their side). You ought to address that, as bad things can get thru that gap if present.
        --
        Justin 70 1800E, 66 122E, 71 145S
        Read vclassics!








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        Electric Rad Fan 1800

        It's K&N cone filter, but a great big one. It's hooked to a 3" diameter tube that connects to an air box on the Webers. The idea is that the engine breathes relatively cool, dense air rather than underhood air that's gone through a hot radiator.

        Here's what the tube connects to...









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          Topic shift - Weber carbs 1800

          Phil - I've gotten a pair of Weber DCOE 40's and a manifold and was planning on putting them on my PV engine this spring some time. I'd be very interested in knowing how yours are set up, and what your engine is. I'd like some sort of baseline to start mine out with. Main jets, emulsifier tubes, air correctors, idle jets and choke sizes, if you know them. And the displacement and cam on your engine. How did you tune yours, and how are the results?

          Thanks, John Mc.








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            Topic shift - Weber carbs 1800

            John,

            It's going to be different for every motor, so my settings are not going to be of any use to you at all. Even if the motor were a known quantity, the intake manifold length, air horn specifics (or no air horns), header, exhaust system, and timing curve will all have a profound effect on what works best in the carbs. The stuff I'm using will be just plain wrong for yours, as in "not even close."

            Not trying to be obscure -- I'd really mislead you if I provided the specifics.








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              Topic shift - Weber carbs 1800

              I understand. I was planning on rigging up a wideband O2 sensor on it to aid in the tuning. Do you know of any places that rent out 'tuning kits' - with lots of different jets/chokes/tubes/etc and pay a fee plus whatever parts you keep? I figure that has to be done by someone.








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                Topic shift - Weber carbs 1800

                Hi John - I don't know if they rent tuning kits, but the place I get (almost) all my Weber stuff is Top End Performance http://www.racetep.com/weber.html

                I'd give them a call - everyone I've talked to there knows Webers, has had really sound advice, and is/was familiar with the B18/B20 applications. I've been really happy with these folks.

                Bedtime reading...

                http://members.aol.com/dvandrews/webers.htm

                http://www.geocities.com:0080/Baja/Canyon/1017/weber.html

                I have a bunch of books on Webers with jetting recommendations, and according to the charts, my 2130cc B20 is jetted as a 1200cc engine.

                Best,

                Cameron
                Rose City

                PS: I know what jets Phil has: GREAT BIG HONKERS! His motor is pretty well over the top of anything reasonable. hee hee hee sorry Phil...








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      Electric Rad Fan 1800

      phil,

      Is your the belt driven fan still in place? If not...How does the car perform temperature wise?








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        Electric Rad Fan 1800

        That's the only fan, and it's on a thermostat -- it never turns on at all unless the car has been sitting in traffic for several minutes. The length of a typical red light isn't enough to do it. When it does come on, it goes back off after 45 seconds or so.

        Original radiator, 180-degree coolant T-stat, no problems at all so far... but I haven't had a chance to drive the car in temps over ~60F.








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          More detail 1800

          Sorry to follow up my own somewhat hasty post...

          The fan I used is intended to mount with soft plastic screws that run through the radiator core and have plastic nuts on the other side. This is a 12" fan, and there is just barely clearance for the rotating part in the radiator opening - locating it precisely is required, and the support must go horizontally.

          That would work fine for most radiators, but Volvo radiators have denser-than-normal cores. I did not want to try to drill holes or otherwise enlarge the space between the fins to let the bolts slip through, so I mounted the fan to the body using small angle brackets, and with the support vertical.

          This created a clearance issue with the front edge of the hood when open (the hood was off the car when I mounted the fan, duh...). Even with relocating the thermostat control from the fan support to another location, I had to drill the top hole in the hood support strut 1" lower in order for the hood not to hit the support. The hood therefore latches slightly less open than before, although it's not really noticeable.

          If you do choose to go through the core with the screws, you won't have that problem. (No, there's no room for it to go on the other side of the radiator.)








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            More detail 1800

            I put a 16 inch fan on a thermostat on my 2.2 liter 544. At first I took the puny old style belt fan off - but the temp was a little erratic. It never overheated, but it would go up and down a lot. Of course, the cooling system is a little stressed in that car - it has a B16 radiator trying to keep a 2.2 liter B20 cool. And I probably wouldn't have noticed the temp wavering without a more accurate gauge. When I put the fan back on it made things a little calmer.

            The electric fan still works perfectly to solve the two problems I originally put it on for - overheating in stop and go traffic on hot days and a little overboil when you drive it hard and shut it off.








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    Electric Rad Fan 1800

    I replaced the fan clutch assembly on my 72 1800 with a flex fan and it has worked fine. Much easier and cheaper than installing an electric one.








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    Electric Rad Fan 1800

    Go to Yahoo Groups--1800 List. Search the archives. You'll find lots of discussions about this.

    Rolfe--71E--stock fan







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