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200 Series General Forum for the Volvo 240 and 260 cars |
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Which Gearbox?????????Views : 653 Replies : 4Users Viewing This Thread : |
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May 24th, 2006, 22:55 | #1 |
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Location: aberdeen
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Which Gearbox?????????
Hello all, I've just bought a 1975 244 Saloon in outstanding condition for her age. (£80 off ebay!!!!!!!) She has only covered 84000 mls from new. I couldnt believe my luck when I won her for so little.
I wish to change the 4 spd box for a 5 spd box as she is a bit revvy at motorway speeds. I am unsure what is compatible. The car is fitted with the B21A engine. I seem to recall that my old '86C 740 2.3 Carb used to rev extremely low at 70 but I cant remember the gearbox code. Any help/advice appreciated |
May 24th, 2006, 23:27 | #2 |
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An M47 5 speed is fitted to most of the later models, this should fit just fine though check that it has the same output flange for your original driveshaft or you'll end up changine the shafts too, not hard but more work. Hope this helps.
Regards Ben
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May 25th, 2006, 08:13 | #3 |
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Last Online: Jun 3rd, 2024 16:16
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Location: Bedford
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You may also have an issue with speedometer cables - the early ones were cable driven from the gearbox, the later ones used a sensor mounted on the back axle.
It might be worth sourcing a 4spd + overdrive from another cable driven speedometer'd car. David |
May 25th, 2006, 08:30 | #4 |
Not an expert but ...
Last Online: Yesterday 15:37
Join Date: Dec 2001
Location: Boncath
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Also watch for the number of splines on the gearbox input shaft. early 4-speed boxes were different. I think they are still interchangeable as long as you use the appropriate clutch plate.
Ideally you do need access to the donor car. With the M47 5 speed the prop shaft couplings and flanges are often different, and the M46 overdrive box has a shorter front section of shaft, because the box is now longer. Mounts also differ, but are interchangeable. The alternative set of captive nuts for putting the cross member in the other position should already be present. If going for the M46 you would of course need the appropriate gearlever as well, also overdrive wiring and relay. |
May 25th, 2006, 10:18 | #5 |
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Last Online: May 15th, 2024 09:52
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The boxes are interchangeable by changing clutch plate. Early boxes up to 79 had a coarse spine clutch and it went to fine spline after that. Cable speedos only went to about 1983 - after that they were electronic off rear axle. To use one of these you'd have to change speedo and rear axle - a lot of work. Clifford is spot on with all his comments.
Mike
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