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Driveshaft Diameter? 120-130

posted by  RepairmanJackal on  Tue Dec 16 14:33 CST 2008
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last visit: Tue Jun 10 09:52 CST 2014
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Is this a D-type or a J-type?

I ask because my J-type came from an 1800E and I have to find a special small flange to fit my short driveshaft to the OD unit. Most J units are matter to the 2" driveshafts, while the D-types tend to fit to the smaller stock amazon driveshafts.


To do the conversion, you're gonna need:

Overdrive Unit
Short driveshaft (matched to your flange)
Relay (the 3-prong volvo can relay will work (looks just like your reverse relay.
Long speedometer cable
Wiring and maybe some sort of indicator light...

That's really it, especially if you want to use the high-beams to engage the OD.
In my experience, getting the right short driveshaft/OD output flange is the tricky part.

There are several schematics out there including one that shows how to use a 240 relay to get the job done.

Someone will chime in with anything I've overlooked.






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New woohoo! got an overdrive! [120-130]
posted by  livelarg  on Tue Dec 16 13:49 CST 2008 >


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