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200 Series General Forum for the Volvo 240 and 260 cars |
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New (to me) 1980 Volvo 244Views : 2026290 Replies : 4092Users Viewing This Thread : |
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Feb 24th, 2020, 07:41 | #221 | |
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The Royal Barge's radiator certainly doesn't look 40 years old, so I suspect it has been changed some time in the past decade. Alan |
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Feb 24th, 2020, 07:46 | #222 | |
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The top hose stub looks like it is 35mm (or thereabouts) diameter: I could get a more accurate measurement if needed. The radiator looks fairly new - certainly not 40 years old, so it may have come from a later car. The shroud is 17.5" internal diameter, so I think the 16" fan could be made to fit very neatly indeed inside it and secured with a few Meccano brackets with the fixed fan just removed to a safe place. I like this idea, I think it would be a sympathetic and sensible improvement to the Royal Barge for about £30. Alan |
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Feb 24th, 2020, 08:17 | #223 |
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The Royal Barge does seem to warm up a bit slowly. I’ve just driven the short way in to the Wetherspoons for breakfast (about 2 miles) and it still needed the fast idle at the end, the temperature gauge had not budged.
I’ll get it flushed out, the thermostat changed and refilled this week and we’ll see if that helps. I like the electric fan idea as well and will order the bits this week to fit next. Alan. |
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Feb 24th, 2020, 09:15 | #224 | |
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The Volvo 940 radiator has a two speed relay, I connected the sensor to the low side and it works well- the ecu is connected to the high side, but you could either use a single relay or just not connect the high side if you use the Volvo one. Or fit a manual override to the high side. Cheers |
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Feb 24th, 2020, 09:18 | #225 | |
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Feb 24th, 2020, 09:56 | #226 | |
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1/2 mile, gauge registering about a quarter. 2 miles, gauge registering half. In the next few hundred yards it then rises a further 1/8, but drops rapidly back to half as the thermostat opens. The gauge is very sensitive - it dips briefly when I slide the heater control ON as a new slug of cold water circulates, but by 2 miles the gauge registers a rock steady half and the heater will blow hot air. I've had all the fan options on 240s over the years - fixed fan, viscous coupling, and electric, and concluded the viscous coupling works the best. The whooshing noise you either love or hate - I used to hate it but have come to like it as part of that authentic 240 sound. Mine works extremely effectively, and together with a clean radiator, good thermostat, and 2-yearly flush and coolant change the temperature stays solidly on the half-way mark regardless of air temperature. An electric fan is not maintenance-free, as you need to be constantly aware that it is still working. After a scare once when the temperature climbed alarmingly because a wire had corroded at the motor, and another because leaves had stopped the fan, I removed it and refitted the viscous coupling. Part of this arises because an electric fan cuts in so rarely, but when it does you really need it to work. |
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Feb 24th, 2020, 11:12 | #227 | |
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Alan |
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Feb 24th, 2020, 11:29 | #228 |
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I’d start by looking at the thermostat - drain the coolant and take the thermostat cover off using a 6 sided, not 12 point socket - the nuts are only 10mm and easy to strip.
Thermostats can break on one side meaning they’re permanently open Cheers |
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Feb 24th, 2020, 12:08 | #229 | |
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With the aftermarket fan (in particular the one i linked to) you'll probably find you need to remove the existing shroud from the radiator as the fan is designed to monut on the rad and has it's own shroud/cowl designed for maximum airflow through it - the OE cowl/shroud could impede this. Also gives you much more room on the engine bay! If you see what i mean! I haven't yet added my own electric cooling fan, there's already one in front of the rad on mine for the A/C and so far, even on hot days, that's only come on a few times. If you wanted "reassurance" about the fan operating, you could fit a tell-tale warning lamp wired across the motor terminals or use a spare warning light on the instrument cluster.
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Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........ |
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Feb 24th, 2020, 14:42 | #230 | |
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I don't think the thermostat is permanent open because the gauge does start cycling, but it takes a long time to get there, so I do think it is not 100% right. Alan |
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